{ "meta": { "title": "What every time zone has done since 1970", "source": "IANA time zone database (tzdata), read via Intl", "method": "Eras are derived by probing the offset year by year, not typed. A tzdata upgrade changes this file rather than contradicting it.", "firstYear": 1970, "limits": "Before 1970 tzdata entries are best-effort reconstructions of local mean time, often accurate to a town rather than a country, and are excluded. The database records what clocks did, not why.", "licence": "Free to use and quote, including commercially. https://usebasetime.com/terms", "zones": 242 }, "zones": [ { "zone": "Africa/Algiers", "standardOffset": "UTC+1", "standardOffsetMinutes": 60, "observesDst": false, "dstAdoptedIn": 1980, "dstAbolishedIn": 1982, "unchangedSince": 1982, "eras": [ { "from": 1970, "to": 1970, "clocksMove": false, "standardOffset": "UTC+0", "summerOffset": null }, { "from": 1971, "to": 1971, "clocksMove": true, "standardOffset": "UTC+0", "summerOffset": "UTC+1" }, { "from": 1972, "to": 1976, "clocksMove": false, "standardOffset": "UTC+0", "summerOffset": null }, { "from": 1977, "to": 1977, "clocksMove": true, "standardOffset": "UTC+0", "summerOffset": "UTC+1" }, { "from": 1978, "to": 1978, "clocksMove": true, "standardOffset": "UTC+1", "summerOffset": "UTC+2" }, { "from": 1979, "to": 1979, "clocksMove": false, "standardOffset": "UTC+1", "summerOffset": null }, { "from": 1980, "to": 1981, "clocksMove": true, "standardOffset": "UTC+0", "summerOffset": "UTC+1" }, { "from": 1982, "to": 2027, "clocksMove": false, "standardOffset": "UTC+1", "summerOffset": null } ], "changes": [ { "year": 1971, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+1 in summer." }, { "year": 1972, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+0 became the year-round time." }, { "year": 1977, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+1 in summer." }, { "year": 1978, "date": "1978-03-24", "description": "Standard time moved from UTC+0 to UTC+1, a shift of 1 hour." }, { "year": 1979, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+1 became the year-round time." }, { "year": 1980, "date": "1979-10-25", "description": "Standard time moved from UTC+1 to UTC+0, a shift of 1 hour." }, { "year": 1980, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+1 in summer." }, { "year": 1982, "date": null, "description": "Standard time moved from UTC+0 to UTC+1, a shift of 1 hour." }, { "year": 1982, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+1 became the year-round time." } ] }, { "zone": "Africa/Bissau", "standardOffset": "UTC+0", "standardOffsetMinutes": 0, "observesDst": false, "dstAdoptedIn": null, "dstAbolishedIn": null, "unchangedSince": 1975, "eras": [ { "from": 1970, "to": 1974, "clocksMove": false, "standardOffset": "UTC−1", "summerOffset": null }, { "from": 1975, "to": 2027, "clocksMove": false, "standardOffset": "UTC+0", "summerOffset": null } ], "changes": [ { "year": 1975, "date": "1975-01-01", "description": "Standard time moved from UTC−1 to UTC+0, a shift of 1 hour." } ] }, { "zone": "Africa/Cairo", "standardOffset": "UTC+2", "standardOffsetMinutes": 120, "observesDst": true, "dstAdoptedIn": 2023, "dstAbolishedIn": null, "unchangedSince": 2023, "eras": [ { "from": 1970, "to": 1981, "clocksMove": true, "standardOffset": "UTC+2", "summerOffset": "UTC+3" }, { "from": 1982, "to": 1982, "clocksMove": false, "standardOffset": "UTC+2", "summerOffset": null }, { "from": 1983, "to": 2010, "clocksMove": true, "standardOffset": "UTC+2", "summerOffset": "UTC+3" }, { "from": 2011, "to": 2022, "clocksMove": false, "standardOffset": "UTC+2", "summerOffset": null }, { "from": 2023, "to": 2027, "clocksMove": true, "standardOffset": "UTC+2", "summerOffset": "UTC+3" } ], "changes": [ { "year": 1982, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+2 became the year-round time." }, { "year": 1983, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+3 in summer." }, { "year": 2011, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+2 became the year-round time." }, { "year": 2023, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+3 in summer." } ] }, { "zone": "Africa/Casablanca", "standardOffset": "UTC+1", "standardOffsetMinutes": 60, "observesDst": false, "dstAdoptedIn": 2016, "dstAbolishedIn": 2019, "unchangedSince": 2019, "eras": [ { "from": 1970, "to": 1973, "clocksMove": false, "standardOffset": "UTC+0", "summerOffset": null }, { "from": 1974, "to": 1974, "clocksMove": true, "standardOffset": "UTC+0", "summerOffset": "UTC+1" }, { "from": 1975, "to": 1975, "clocksMove": false, "standardOffset": "UTC+0", "summerOffset": null }, { "from": 1976, "to": 1978, "clocksMove": true, "standardOffset": "UTC+0", "summerOffset": "UTC+1" }, { "from": 1979, "to": 1983, "clocksMove": false, "standardOffset": "UTC+0", "summerOffset": null }, { "from": 1984, "to": 1984, "clocksMove": true, "standardOffset": "UTC+0", "summerOffset": "UTC+1" }, { "from": 1985, "to": 1985, "clocksMove": false, "standardOffset": "UTC+1", "summerOffset": null }, { "from": 1986, "to": 2007, "clocksMove": false, "standardOffset": "UTC+0", "summerOffset": null }, { "from": 2008, "to": 2012, "clocksMove": true, "standardOffset": "UTC+0", "summerOffset": "UTC+1" }, { "from": 2013, "to": 2015, "clocksMove": false, "standardOffset": "UTC+0", "summerOffset": null }, { "from": 2016, "to": 2018, "clocksMove": true, "standardOffset": "UTC+0", "summerOffset": "UTC+1" }, { "from": 2019, "to": 2027, "clocksMove": false, "standardOffset": "UTC+1", "summerOffset": null } ], "changes": [ { "year": 1974, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+1 in summer." }, { "year": 1975, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+0 became the year-round time." }, { "year": 1976, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+1 in summer." }, { "year": 1979, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+0 became the year-round time." }, { "year": 1984, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+1 in summer." }, { "year": 1985, "date": "1985-12-31", "description": "Standard time moved from UTC+0 to UTC+1, a shift of 1 hour." }, { "year": 1985, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+1 became the year-round time." }, { "year": 1986, "date": "1985-12-31", "description": "Standard time moved from UTC+1 to UTC+0, a shift of 1 hour." }, { "year": 2008, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+1 in summer." }, { "year": 2013, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+0 became the year-round time." }, { "year": 2016, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+1 in summer." }, { "year": 2019, "date": "2018-06-17", "description": "Standard time moved from UTC+0 to UTC+1, a shift of 1 hour." }, { "year": 2019, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+1 became the year-round time." } ] }, { "zone": "Africa/Ceuta", "standardOffset": "UTC+1", "standardOffsetMinutes": 60, "observesDst": true, "dstAdoptedIn": 1986, "dstAbolishedIn": null, "unchangedSince": 1986, "eras": [ { "from": 1970, "to": 1973, "clocksMove": false, "standardOffset": "UTC+0", "summerOffset": null }, { "from": 1974, "to": 1974, "clocksMove": true, "standardOffset": "UTC+0", "summerOffset": "UTC+1" }, { "from": 1975, "to": 1975, "clocksMove": false, "standardOffset": "UTC+0", "summerOffset": null }, { "from": 1976, "to": 1978, "clocksMove": true, "standardOffset": "UTC+0", "summerOffset": "UTC+1" }, { "from": 1979, "to": 1983, "clocksMove": false, "standardOffset": "UTC+0", "summerOffset": null }, { "from": 1984, "to": 1984, "clocksMove": true, "standardOffset": "UTC+0", "summerOffset": "UTC+1" }, { "from": 1985, "to": 1985, "clocksMove": false, "standardOffset": "UTC+1", "summerOffset": null }, { "from": 1986, "to": 2027, "clocksMove": true, "standardOffset": "UTC+1", "summerOffset": "UTC+2" } ], "changes": [ { "year": 1974, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+1 in summer." }, { "year": 1975, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+0 became the year-round time." }, { "year": 1976, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+1 in summer." }, { "year": 1979, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+0 became the year-round time." }, { "year": 1984, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+1 in summer." }, { "year": 1985, "date": null, "description": "Standard time moved from UTC+0 to UTC+1, a shift of 1 hour." }, { "year": 1985, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+1 became the year-round time." }, { "year": 1986, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+2 in summer." } ] }, { "zone": "Africa/El_Aaiun", "standardOffset": "UTC+1", "standardOffsetMinutes": 60, "observesDst": false, "dstAdoptedIn": 2016, "dstAbolishedIn": 2019, "unchangedSince": 2019, "eras": [ { "from": 1970, "to": 1975, "clocksMove": false, "standardOffset": "UTC−1", "summerOffset": null }, { "from": 1976, "to": 1976, "clocksMove": true, "standardOffset": "UTC−1", "summerOffset": "UTC+1" }, { "from": 1977, "to": 1978, "clocksMove": true, "standardOffset": "UTC+0", "summerOffset": "UTC+1" }, { "from": 1979, "to": 2007, "clocksMove": false, "standardOffset": "UTC+0", "summerOffset": null }, { "from": 2008, "to": 2012, "clocksMove": true, "standardOffset": "UTC+0", "summerOffset": "UTC+1" }, { "from": 2013, "to": 2015, "clocksMove": false, "standardOffset": "UTC+0", "summerOffset": null }, { "from": 2016, "to": 2018, "clocksMove": true, "standardOffset": "UTC+0", "summerOffset": "UTC+1" }, { "from": 2019, "to": 2027, "clocksMove": false, "standardOffset": "UTC+1", "summerOffset": null } ], "changes": [ { "year": 1976, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+1 in summer." }, { "year": 1977, "date": "1976-07-31", "description": "Standard time moved from UTC−1 to UTC+0, a shift of 1 hour." }, { "year": 1979, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+0 became the year-round time." }, { "year": 2008, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+1 in summer." }, { "year": 2013, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+0 became the year-round time." }, { "year": 2016, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+1 in summer." }, { "year": 2019, "date": "2018-06-17", "description": "Standard time moved from UTC+0 to UTC+1, a shift of 1 hour." }, { "year": 2019, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+1 became the year-round time." } ] }, { "zone": "Africa/Juba", "standardOffset": "UTC+2", "standardOffsetMinutes": 120, "observesDst": false, "dstAdoptedIn": 2021, "dstAbolishedIn": 2022, "unchangedSince": 2022, "eras": [ { "from": 1970, "to": 1985, "clocksMove": true, "standardOffset": "UTC+2", "summerOffset": "UTC+3" }, { "from": 1986, "to": 1999, "clocksMove": false, "standardOffset": "UTC+2", "summerOffset": null }, { "from": 2000, "to": 2000, "clocksMove": true, "standardOffset": "UTC+2", "summerOffset": "UTC+3" }, { "from": 2001, "to": 2020, "clocksMove": false, "standardOffset": "UTC+3", "summerOffset": null }, { "from": 2021, "to": 2021, "clocksMove": true, "standardOffset": "UTC+2", "summerOffset": "UTC+3" }, { "from": 2022, "to": 2027, "clocksMove": false, "standardOffset": "UTC+2", "summerOffset": null } ], "changes": [ { "year": 1986, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+2 became the year-round time." }, { "year": 2000, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+3 in summer." }, { "year": 2001, "date": null, "description": "Standard time moved from UTC+2 to UTC+3, a shift of 1 hour." }, { "year": 2001, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+3 became the year-round time." }, { "year": 2021, "date": "2021-01-31", "description": "Standard time moved from UTC+3 to UTC+2, a shift of 1 hour." }, { "year": 2021, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+3 in summer." }, { "year": 2022, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+2 became the year-round time." } ] }, { "zone": "Africa/Khartoum", "standardOffset": "UTC+2", "standardOffsetMinutes": 120, "observesDst": false, "dstAdoptedIn": 2000, "dstAbolishedIn": 2001, "unchangedSince": 2018, "eras": [ { "from": 1970, "to": 1985, "clocksMove": true, "standardOffset": "UTC+2", "summerOffset": "UTC+3" }, { "from": 1986, "to": 1999, "clocksMove": false, "standardOffset": "UTC+2", "summerOffset": null }, { "from": 2000, "to": 2000, "clocksMove": true, "standardOffset": "UTC+2", "summerOffset": "UTC+3" }, { "from": 2001, "to": 2017, "clocksMove": false, "standardOffset": "UTC+3", "summerOffset": null }, { "from": 2018, "to": 2027, "clocksMove": false, "standardOffset": "UTC+2", "summerOffset": null } ], "changes": [ { "year": 1986, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+2 became the year-round time." }, { "year": 2000, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+3 in summer." }, { "year": 2001, "date": null, "description": "Standard time moved from UTC+2 to UTC+3, a shift of 1 hour." }, { "year": 2001, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+3 became the year-round time." }, { "year": 2018, "date": "2017-10-31", "description": "Standard time moved from UTC+3 to UTC+2, a shift of 1 hour." } ] }, { "zone": "Africa/Monrovia", "standardOffset": "UTC+0", "standardOffsetMinutes": 0, "observesDst": false, "dstAdoptedIn": null, "dstAbolishedIn": null, "unchangedSince": 1972, "eras": [ { "from": 1970, "to": 1971, "clocksMove": false, "standardOffset": "UTC−0:44", "summerOffset": null }, { "from": 1972, "to": 2027, "clocksMove": false, "standardOffset": "UTC+0", "summerOffset": null } ], "changes": [ { "year": 1972, "date": "1972-01-07", "description": "Standard time moved from UTC−0:44 to UTC+0, a shift of 44 minutes." } ] }, { "zone": "Africa/Ndjamena", "standardOffset": "UTC+1", "standardOffsetMinutes": 60, "observesDst": false, "dstAdoptedIn": 1980, "dstAbolishedIn": 1981, "unchangedSince": 1981, "eras": [ { "from": 1970, "to": 1979, "clocksMove": false, "standardOffset": "UTC+1", "summerOffset": null }, { "from": 1980, "to": 1980, "clocksMove": true, "standardOffset": "UTC+1", "summerOffset": "UTC+2" }, { "from": 1981, "to": 2027, "clocksMove": false, "standardOffset": "UTC+1", "summerOffset": null } ], "changes": [ { "year": 1980, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+2 in summer." }, { "year": 1981, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+1 became the year-round time." } ] }, { "zone": "Africa/Sao_Tome", "standardOffset": "UTC+0", "standardOffsetMinutes": 0, "observesDst": false, "dstAdoptedIn": null, "dstAbolishedIn": null, "unchangedSince": 2019, "eras": [ { "from": 1970, "to": 2017, "clocksMove": false, "standardOffset": "UTC+0", "summerOffset": null }, { "from": 2018, "to": 2018, "clocksMove": false, "standardOffset": "UTC+1", "summerOffset": null }, { "from": 2019, "to": 2027, "clocksMove": false, "standardOffset": "UTC+0", "summerOffset": null } ], "changes": [ { "year": 2018, "date": "2018-01-01", "description": "Standard time moved from UTC+0 to UTC+1, a shift of 1 hour." }, { "year": 2019, "date": "2019-01-01", "description": "Standard time moved from UTC+1 to UTC+0, a shift of 1 hour." } ] }, { "zone": "Africa/Tripoli", "standardOffset": "UTC+2", "standardOffsetMinutes": 120, "observesDst": false, "dstAdoptedIn": 2013, "dstAbolishedIn": 2014, "unchangedSince": 2014, "eras": [ { "from": 1970, "to": 1981, "clocksMove": false, "standardOffset": "UTC+2", "summerOffset": null }, { "from": 1982, "to": 1990, "clocksMove": true, "standardOffset": "UTC+1", "summerOffset": "UTC+2" }, { "from": 1991, "to": 1996, "clocksMove": false, "standardOffset": "UTC+2", "summerOffset": null }, { "from": 1997, "to": 1997, "clocksMove": true, "standardOffset": "UTC+1", "summerOffset": "UTC+2" }, { "from": 1998, "to": 2012, "clocksMove": false, "standardOffset": "UTC+2", "summerOffset": null }, { "from": 2013, "to": 2013, "clocksMove": true, "standardOffset": "UTC+1", "summerOffset": "UTC+2" }, { "from": 2014, "to": 2027, "clocksMove": false, "standardOffset": "UTC+2", "summerOffset": null } ], "changes": [ { "year": 1982, "date": "1981-12-31", "description": "Standard time moved from UTC+2 to UTC+1, a shift of 1 hour." }, { "year": 1982, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+2 in summer." }, { "year": 1991, "date": null, "description": "Standard time moved from UTC+1 to UTC+2, a shift of 1 hour." }, { "year": 1991, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+2 became the year-round time." }, { "year": 1997, "date": "1996-09-29", "description": "Standard time moved from UTC+2 to UTC+1, a shift of 1 hour." }, { "year": 1997, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+2 in summer." }, { "year": 1998, "date": null, "description": "Standard time moved from UTC+1 to UTC+2, a shift of 1 hour." }, { "year": 1998, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+2 became the year-round time." }, { "year": 2013, "date": "2012-11-10", "description": "Standard time moved from UTC+2 to UTC+1, a shift of 1 hour." }, { "year": 2013, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+2 in summer." }, { "year": 2014, "date": null, "description": "Standard time moved from UTC+1 to UTC+2, a shift of 1 hour." }, { "year": 2014, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+2 became the year-round time." } ] }, { "zone": "Africa/Tunis", "standardOffset": "UTC+1", "standardOffsetMinutes": 60, "observesDst": false, "dstAdoptedIn": 2005, "dstAbolishedIn": 2009, "unchangedSince": 2009, "eras": [ { "from": 1970, "to": 1976, "clocksMove": false, "standardOffset": "UTC+1", "summerOffset": null }, { "from": 1977, "to": 1978, "clocksMove": true, "standardOffset": "UTC+1", "summerOffset": "UTC+2" }, { "from": 1979, "to": 1987, "clocksMove": false, "standardOffset": "UTC+1", "summerOffset": null }, { "from": 1988, "to": 1990, "clocksMove": true, "standardOffset": "UTC+1", "summerOffset": "UTC+2" }, { "from": 1991, "to": 2004, "clocksMove": false, "standardOffset": "UTC+1", "summerOffset": null }, { "from": 2005, "to": 2008, "clocksMove": true, "standardOffset": "UTC+1", "summerOffset": "UTC+2" }, { "from": 2009, "to": 2027, "clocksMove": false, "standardOffset": "UTC+1", "summerOffset": null } ], "changes": [ { "year": 1977, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+2 in summer." }, { "year": 1979, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+1 became the year-round time." }, { "year": 1988, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+2 in summer." }, { "year": 1991, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+1 became the year-round time." }, { "year": 2005, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+2 in summer." }, { "year": 2009, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+1 became the year-round time." } ] }, { "zone": "Africa/Windhoek", "standardOffset": "UTC+2", "standardOffsetMinutes": 120, "observesDst": false, "dstAdoptedIn": 1994, "dstAbolishedIn": 2018, "unchangedSince": 2018, "eras": [ { "from": 1970, "to": 1993, "clocksMove": false, "standardOffset": "UTC+2", "summerOffset": null }, { "from": 1994, "to": 2017, "clocksMove": true, "standardOffset": "UTC+1", "summerOffset": "UTC+2" }, { "from": 2018, "to": 2027, "clocksMove": false, "standardOffset": "UTC+2", "summerOffset": null } ], "changes": [ { "year": 1994, "date": "1994-03-20", "description": "Standard time moved from UTC+2 to UTC+1, a shift of 1 hour." }, { "year": 1994, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+2 in summer." }, { "year": 2018, "date": "2017-09-03", "description": "Standard time moved from UTC+1 to UTC+2, a shift of 1 hour." }, { "year": 2018, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+2 became the year-round time." } ] }, { "zone": "America/Adak", "standardOffset": "UTC−10", "standardOffsetMinutes": -600, "observesDst": true, "dstAdoptedIn": 1975, "dstAbolishedIn": null, "unchangedSince": 1984, "eras": [ { "from": 1970, "to": 1973, "clocksMove": true, "standardOffset": "UTC−11", "summerOffset": "UTC−10" }, { "from": 1974, "to": 1974, "clocksMove": false, "standardOffset": "UTC−10", "summerOffset": null }, { "from": 1975, "to": 1983, "clocksMove": true, "standardOffset": "UTC−11", "summerOffset": "UTC−10" }, { "from": 1984, "to": 2027, "clocksMove": true, "standardOffset": "UTC−10", "summerOffset": "UTC−9" } ], "changes": [ { "year": 1974, "date": "1973-10-28", "description": "Standard time moved from UTC−11 to UTC−10, a shift of 1 hour." }, { "year": 1974, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−10 became the year-round time." }, { "year": 1975, "date": "1974-10-27", "description": "Standard time moved from UTC−10 to UTC−11, a shift of 1 hour." }, { "year": 1975, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−10 in summer." }, { "year": 1984, "date": "1984-04-29", "description": "Standard time moved from UTC−11 to UTC−10, a shift of 1 hour." } ] }, { "zone": "America/Anchorage", "standardOffset": "UTC−9", "standardOffsetMinutes": -540, "observesDst": true, "dstAdoptedIn": 1975, "dstAbolishedIn": null, "unchangedSince": 1984, "eras": [ { "from": 1970, "to": 1973, "clocksMove": true, "standardOffset": "UTC−10", "summerOffset": "UTC−9" }, { "from": 1974, "to": 1974, "clocksMove": false, "standardOffset": "UTC−9", "summerOffset": null }, { "from": 1975, "to": 1983, "clocksMove": true, "standardOffset": "UTC−10", "summerOffset": "UTC−9" }, { "from": 1984, "to": 2027, "clocksMove": true, "standardOffset": "UTC−9", "summerOffset": "UTC−8" } ], "changes": [ { "year": 1974, "date": "1973-10-28", "description": "Standard time moved from UTC−10 to UTC−9, a shift of 1 hour." }, { "year": 1974, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−9 became the year-round time." }, { "year": 1975, "date": "1974-10-27", "description": "Standard time moved from UTC−9 to UTC−10, a shift of 1 hour." }, { "year": 1975, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−9 in summer." }, { "year": 1984, "date": "1984-04-29", "description": "Standard time moved from UTC−10 to UTC−9, a shift of 1 hour." } ] }, { "zone": "America/Argentina/Salta", "standardOffset": "UTC−3", "standardOffsetMinutes": -180, "observesDst": false, "dstAdoptedIn": 2008, "dstAbolishedIn": 2009, "unchangedSince": 2009, "eras": [ { "from": 1970, "to": 1988, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 1989, "to": 1990, "clocksMove": true, "standardOffset": "UTC−3", "summerOffset": "UTC−2" }, { "from": 1991, "to": 1991, "clocksMove": true, "standardOffset": "UTC−4", "summerOffset": "UTC−2" }, { "from": 1992, "to": 1993, "clocksMove": true, "standardOffset": "UTC−3", "summerOffset": "UTC−2" }, { "from": 1994, "to": 2007, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 2008, "to": 2008, "clocksMove": true, "standardOffset": "UTC−3", "summerOffset": "UTC−2" }, { "from": 2009, "to": 2027, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null } ], "changes": [ { "year": 1989, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−2 in summer." }, { "year": 1991, "date": "1991-03-03", "description": "Standard time moved from UTC−3 to UTC−4, a shift of 1 hour." }, { "year": 1992, "date": "1991-10-20", "description": "Standard time moved from UTC−4 to UTC−3, a shift of 1 hour." }, { "year": 1994, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." }, { "year": 2008, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−2 in summer." }, { "year": 2009, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." } ] }, { "zone": "America/Argentina/San_Juan", "standardOffset": "UTC−3", "standardOffsetMinutes": -180, "observesDst": false, "dstAdoptedIn": 2008, "dstAbolishedIn": 2009, "unchangedSince": 2009, "eras": [ { "from": 1970, "to": 1988, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 1989, "to": 1993, "clocksMove": true, "standardOffset": "UTC−3", "summerOffset": "UTC−2" }, { "from": 1994, "to": 2003, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 2004, "to": 2004, "clocksMove": true, "standardOffset": "UTC−4", "summerOffset": "UTC−3" }, { "from": 2005, "to": 2007, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 2008, "to": 2008, "clocksMove": true, "standardOffset": "UTC−3", "summerOffset": "UTC−2" }, { "from": 2009, "to": 2027, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null } ], "changes": [ { "year": 1989, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−2 in summer." }, { "year": 1994, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." }, { "year": 2004, "date": "2004-05-31", "description": "Standard time moved from UTC−3 to UTC−4, a shift of 1 hour." }, { "year": 2004, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−3 in summer." }, { "year": 2005, "date": "2004-07-25", "description": "Standard time moved from UTC−4 to UTC−3, a shift of 1 hour." }, { "year": 2005, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." }, { "year": 2008, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−2 in summer." }, { "year": 2009, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." } ] }, { "zone": "America/Argentina/San_Luis", "standardOffset": "UTC−3", "standardOffsetMinutes": -180, "observesDst": false, "dstAdoptedIn": 2008, "dstAbolishedIn": 2010, "unchangedSince": 2010, "eras": [ { "from": 1970, "to": 1988, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 1989, "to": 1989, "clocksMove": true, "standardOffset": "UTC−3", "summerOffset": "UTC−2" }, { "from": 1990, "to": 1990, "clocksMove": true, "standardOffset": "UTC−4", "summerOffset": "UTC−2" }, { "from": 1991, "to": 2003, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 2004, "to": 2004, "clocksMove": true, "standardOffset": "UTC−4", "summerOffset": "UTC−3" }, { "from": 2005, "to": 2007, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 2008, "to": 2009, "clocksMove": true, "standardOffset": "UTC−4", "summerOffset": "UTC−2" }, { "from": 2010, "to": 2027, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null } ], "changes": [ { "year": 1989, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−2 in summer." }, { "year": 1990, "date": "1990-03-14", "description": "Standard time moved from UTC−3 to UTC−4, a shift of 1 hour." }, { "year": 1991, "date": "1990-10-15", "description": "Standard time moved from UTC−4 to UTC−3, a shift of 1 hour." }, { "year": 1991, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." }, { "year": 2004, "date": "2004-05-31", "description": "Standard time moved from UTC−3 to UTC−4, a shift of 1 hour." }, { "year": 2004, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−3 in summer." }, { "year": 2005, "date": "2004-07-25", "description": "Standard time moved from UTC−4 to UTC−3, a shift of 1 hour." }, { "year": 2005, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." }, { "year": 2008, "date": "2007-12-30", "description": "Standard time moved from UTC−3 to UTC−4, a shift of 1 hour." }, { "year": 2008, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−2 in summer." }, { "year": 2010, "date": "2009-10-11", "description": "Standard time moved from UTC−4 to UTC−3, a shift of 1 hour." }, { "year": 2010, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." } ] }, { "zone": "America/Argentina/Tucuman", "standardOffset": "UTC−3", "standardOffsetMinutes": -180, "observesDst": false, "dstAdoptedIn": 2008, "dstAbolishedIn": 2010, "unchangedSince": 2010, "eras": [ { "from": 1970, "to": 1988, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 1989, "to": 1990, "clocksMove": true, "standardOffset": "UTC−3", "summerOffset": "UTC−2" }, { "from": 1991, "to": 1991, "clocksMove": true, "standardOffset": "UTC−4", "summerOffset": "UTC−2" }, { "from": 1992, "to": 1993, "clocksMove": true, "standardOffset": "UTC−3", "summerOffset": "UTC−2" }, { "from": 1994, "to": 2007, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 2008, "to": 2009, "clocksMove": true, "standardOffset": "UTC−3", "summerOffset": "UTC−2" }, { "from": 2010, "to": 2027, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null } ], "changes": [ { "year": 1989, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−2 in summer." }, { "year": 1991, "date": "1991-03-03", "description": "Standard time moved from UTC−3 to UTC−4, a shift of 1 hour." }, { "year": 1992, "date": "1991-10-20", "description": "Standard time moved from UTC−4 to UTC−3, a shift of 1 hour." }, { "year": 1994, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." }, { "year": 2008, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−2 in summer." }, { "year": 2010, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." } ] }, { "zone": "America/Asuncion", "standardOffset": "UTC−3", "standardOffsetMinutes": -180, "observesDst": false, "dstAdoptedIn": 1976, "dstAbolishedIn": 2025, "unchangedSince": 2025, "eras": [ { "from": 1970, "to": 1972, "clocksMove": false, "standardOffset": "UTC−4", "summerOffset": null }, { "from": 1973, "to": 1973, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 1974, "to": 1974, "clocksMove": true, "standardOffset": "UTC−4", "summerOffset": "UTC−3" }, { "from": 1975, "to": 1975, "clocksMove": false, "standardOffset": "UTC−4", "summerOffset": null }, { "from": 1976, "to": 2024, "clocksMove": true, "standardOffset": "UTC−4", "summerOffset": "UTC−3" }, { "from": 2025, "to": 2027, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null } ], "changes": [ { "year": 1973, "date": "1972-10-01", "description": "Standard time moved from UTC−4 to UTC−3, a shift of 1 hour." }, { "year": 1974, "date": "1974-04-01", "description": "Standard time moved from UTC−3 to UTC−4, a shift of 1 hour." }, { "year": 1974, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−3 in summer." }, { "year": 1975, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−4 became the year-round time." }, { "year": 1976, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−3 in summer." }, { "year": 2025, "date": "2024-10-06", "description": "Standard time moved from UTC−4 to UTC−3, a shift of 1 hour." }, { "year": 2025, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." } ] }, { "zone": "America/Bahia", "standardOffset": "UTC−3", "standardOffsetMinutes": -180, "observesDst": false, "dstAdoptedIn": 2012, "dstAbolishedIn": 2013, "unchangedSince": 2013, "eras": [ { "from": 1970, "to": 1985, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 1986, "to": 2003, "clocksMove": true, "standardOffset": "UTC−3", "summerOffset": "UTC−2" }, { "from": 2004, "to": 2011, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 2012, "to": 2012, "clocksMove": true, "standardOffset": "UTC−3", "summerOffset": "UTC−2" }, { "from": 2013, "to": 2027, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null } ], "changes": [ { "year": 1986, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−2 in summer." }, { "year": 2004, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." }, { "year": 2012, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−2 in summer." }, { "year": 2013, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." } ] }, { "zone": "America/Bahia_Banderas", "standardOffset": "UTC−6", "standardOffsetMinutes": -360, "observesDst": false, "dstAdoptedIn": 1996, "dstAbolishedIn": 2023, "unchangedSince": 2023, "eras": [ { "from": 1970, "to": 1995, "clocksMove": false, "standardOffset": "UTC−7", "summerOffset": null }, { "from": 1996, "to": 2010, "clocksMove": true, "standardOffset": "UTC−7", "summerOffset": "UTC−6" }, { "from": 2011, "to": 2022, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" }, { "from": 2023, "to": 2027, "clocksMove": false, "standardOffset": "UTC−6", "summerOffset": null } ], "changes": [ { "year": 1996, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−6 in summer." }, { "year": 2011, "date": "2010-10-31", "description": "Standard time moved from UTC−7 to UTC−6, a shift of 1 hour." }, { "year": 2023, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−6 became the year-round time." } ] }, { "zone": "America/Belem", "standardOffset": "UTC−3", "standardOffsetMinutes": -180, "observesDst": false, "dstAdoptedIn": 1986, "dstAbolishedIn": 1989, "unchangedSince": 1989, "eras": [ { "from": 1970, "to": 1985, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 1986, "to": 1988, "clocksMove": true, "standardOffset": "UTC−3", "summerOffset": "UTC−2" }, { "from": 1989, "to": 2027, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null } ], "changes": [ { "year": 1986, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−2 in summer." }, { "year": 1989, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." } ] }, { "zone": "America/Bogota", "standardOffset": "UTC−5", "standardOffsetMinutes": -300, "observesDst": false, "dstAdoptedIn": 1992, "dstAbolishedIn": 1994, "unchangedSince": 1994, "eras": [ { "from": 1970, "to": 1991, "clocksMove": false, "standardOffset": "UTC−5", "summerOffset": null }, { "from": 1992, "to": 1993, "clocksMove": true, "standardOffset": "UTC−5", "summerOffset": "UTC−4" }, { "from": 1994, "to": 2027, "clocksMove": false, "standardOffset": "UTC−5", "summerOffset": null } ], "changes": [ { "year": 1992, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−4 in summer." }, { "year": 1994, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−5 became the year-round time." } ] }, { "zone": "America/Cambridge_Bay", "standardOffset": "UTC−7", "standardOffsetMinutes": -420, "observesDst": true, "dstAdoptedIn": 2002, "dstAbolishedIn": null, "unchangedSince": 2002, "eras": [ { "from": 1970, "to": 1971, "clocksMove": false, "standardOffset": "UTC−7", "summerOffset": null }, { "from": 1972, "to": 1999, "clocksMove": true, "standardOffset": "UTC−7", "summerOffset": "UTC−6" }, { "from": 2000, "to": 2000, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" }, { "from": 2001, "to": 2001, "clocksMove": false, "standardOffset": "UTC−6", "summerOffset": null }, { "from": 2002, "to": 2027, "clocksMove": true, "standardOffset": "UTC−7", "summerOffset": "UTC−6" } ], "changes": [ { "year": 1972, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−6 in summer." }, { "year": 2000, "date": "2000-04-02", "description": "Standard time moved from UTC−7 to UTC−6, a shift of 1 hour." }, { "year": 2001, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−6 became the year-round time." }, { "year": 2002, "date": "2001-10-28", "description": "Standard time moved from UTC−6 to UTC−7, a shift of 1 hour." }, { "year": 2002, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−6 in summer." } ] }, { "zone": "America/Campo_Grande", "standardOffset": "UTC−4", "standardOffsetMinutes": -240, "observesDst": false, "dstAdoptedIn": 1986, "dstAbolishedIn": 2020, "unchangedSince": 2020, "eras": [ { "from": 1970, "to": 1985, "clocksMove": false, "standardOffset": "UTC−4", "summerOffset": null }, { "from": 1986, "to": 2019, "clocksMove": true, "standardOffset": "UTC−4", "summerOffset": "UTC−3" }, { "from": 2020, "to": 2027, "clocksMove": false, "standardOffset": "UTC−4", "summerOffset": null } ], "changes": [ { "year": 1986, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−3 in summer." }, { "year": 2020, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−4 became the year-round time." } ] }, { "zone": "America/Cancun", "standardOffset": "UTC−5", "standardOffsetMinutes": -300, "observesDst": false, "dstAdoptedIn": 1996, "dstAbolishedIn": 2016, "unchangedSince": 2016, "eras": [ { "from": 1970, "to": 1981, "clocksMove": false, "standardOffset": "UTC−6", "summerOffset": null }, { "from": 1982, "to": 1982, "clocksMove": false, "standardOffset": "UTC−5", "summerOffset": null }, { "from": 1983, "to": 1995, "clocksMove": false, "standardOffset": "UTC−6", "summerOffset": null }, { "from": 1996, "to": 1997, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" }, { "from": 1998, "to": 1998, "clocksMove": true, "standardOffset": "UTC−5", "summerOffset": "UTC−4" }, { "from": 1999, "to": 2015, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" }, { "from": 2016, "to": 2027, "clocksMove": false, "standardOffset": "UTC−5", "summerOffset": null } ], "changes": [ { "year": 1982, "date": "1981-12-26", "description": "Standard time moved from UTC−6 to UTC−5, a shift of 1 hour." }, { "year": 1983, "date": "1983-01-04", "description": "Standard time moved from UTC−5 to UTC−6, a shift of 1 hour." }, { "year": 1996, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−5 in summer." }, { "year": 1998, "date": "1998-04-05", "description": "Standard time moved from UTC−6 to UTC−5, a shift of 1 hour." }, { "year": 1999, "date": "1998-08-02", "description": "Standard time moved from UTC−5 to UTC−6, a shift of 1 hour." }, { "year": 2016, "date": null, "description": "Standard time moved from UTC−6 to UTC−5, a shift of 1 hour." }, { "year": 2016, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−5 became the year-round time." } ] }, { "zone": "America/Caracas", "standardOffset": "UTC−4", "standardOffsetMinutes": -240, "observesDst": false, "dstAdoptedIn": 2016, "dstAbolishedIn": 2017, "unchangedSince": 2017, "eras": [ { "from": 1970, "to": 2007, "clocksMove": false, "standardOffset": "UTC−4", "summerOffset": null }, { "from": 2008, "to": 2015, "clocksMove": false, "standardOffset": "UTC−4:30", "summerOffset": null }, { "from": 2016, "to": 2016, "clocksMove": true, "standardOffset": "UTC−4:30", "summerOffset": "UTC−4" }, { "from": 2017, "to": 2027, "clocksMove": false, "standardOffset": "UTC−4", "summerOffset": null } ], "changes": [ { "year": 2008, "date": "2007-12-09", "description": "Standard time moved from UTC−4 to UTC−4:30, a shift of 30 minutes." }, { "year": 2016, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−4 in summer." }, { "year": 2017, "date": null, "description": "Standard time moved from UTC−4:30 to UTC−4, a shift of 30 minutes." }, { "year": 2017, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−4 became the year-round time." } ] }, { "zone": "America/Catamarca", "standardOffset": "UTC−3", "standardOffsetMinutes": -180, "observesDst": false, "dstAdoptedIn": 2008, "dstAbolishedIn": 2009, "unchangedSince": 2009, "eras": [ { "from": 1970, "to": 1988, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 1989, "to": 1990, "clocksMove": true, "standardOffset": "UTC−3", "summerOffset": "UTC−2" }, { "from": 1991, "to": 1991, "clocksMove": true, "standardOffset": "UTC−4", "summerOffset": "UTC−2" }, { "from": 1992, "to": 1993, "clocksMove": true, "standardOffset": "UTC−3", "summerOffset": "UTC−2" }, { "from": 1994, "to": 2007, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 2008, "to": 2008, "clocksMove": true, "standardOffset": "UTC−3", "summerOffset": "UTC−2" }, { "from": 2009, "to": 2027, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null } ], "changes": [ { "year": 1989, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−2 in summer." }, { "year": 1991, "date": "1991-03-03", "description": "Standard time moved from UTC−3 to UTC−4, a shift of 1 hour." }, { "year": 1992, "date": "1991-10-20", "description": "Standard time moved from UTC−4 to UTC−3, a shift of 1 hour." }, { "year": 1994, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." }, { "year": 2008, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−2 in summer." }, { "year": 2009, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." } ] }, { "zone": "America/Chicago", "standardOffset": "UTC−6", "standardOffsetMinutes": -360, "observesDst": true, "dstAdoptedIn": 1975, "dstAbolishedIn": null, "unchangedSince": 1975, "eras": [ { "from": 1970, "to": 1973, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" }, { "from": 1974, "to": 1974, "clocksMove": false, "standardOffset": "UTC−5", "summerOffset": null }, { "from": 1975, "to": 2027, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" } ], "changes": [ { "year": 1974, "date": "1973-10-28", "description": "Standard time moved from UTC−6 to UTC−5, a shift of 1 hour." }, { "year": 1974, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−5 became the year-round time." }, { "year": 1975, "date": "1974-10-27", "description": "Standard time moved from UTC−5 to UTC−6, a shift of 1 hour." }, { "year": 1975, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−5 in summer." } ] }, { "zone": "America/Chihuahua", "standardOffset": "UTC−6", "standardOffsetMinutes": -360, "observesDst": false, "dstAdoptedIn": 1999, "dstAbolishedIn": 2023, "unchangedSince": 2023, "eras": [ { "from": 1970, "to": 1995, "clocksMove": false, "standardOffset": "UTC−6", "summerOffset": null }, { "from": 1996, "to": 1997, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" }, { "from": 1998, "to": 1998, "clocksMove": false, "standardOffset": "UTC−6", "summerOffset": null }, { "from": 1999, "to": 2022, "clocksMove": true, "standardOffset": "UTC−7", "summerOffset": "UTC−6" }, { "from": 2023, "to": 2027, "clocksMove": false, "standardOffset": "UTC−6", "summerOffset": null } ], "changes": [ { "year": 1996, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−5 in summer." }, { "year": 1998, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−6 became the year-round time." }, { "year": 1999, "date": "1998-10-25", "description": "Standard time moved from UTC−6 to UTC−7, a shift of 1 hour." }, { "year": 1999, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−6 in summer." }, { "year": 2023, "date": null, "description": "Standard time moved from UTC−7 to UTC−6, a shift of 1 hour." }, { "year": 2023, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−6 became the year-round time." } ] }, { "zone": "America/Ciudad_Juarez", "standardOffset": "UTC−7", "standardOffsetMinutes": -420, "observesDst": true, "dstAdoptedIn": 1999, "dstAbolishedIn": null, "unchangedSince": 1999, "eras": [ { "from": 1970, "to": 1995, "clocksMove": false, "standardOffset": "UTC−6", "summerOffset": null }, { "from": 1996, "to": 1997, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" }, { "from": 1998, "to": 1998, "clocksMove": false, "standardOffset": "UTC−6", "summerOffset": null }, { "from": 1999, "to": 2027, "clocksMove": true, "standardOffset": "UTC−7", "summerOffset": "UTC−6" } ], "changes": [ { "year": 1996, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−5 in summer." }, { "year": 1998, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−6 became the year-round time." }, { "year": 1999, "date": "1998-10-25", "description": "Standard time moved from UTC−6 to UTC−7, a shift of 1 hour." }, { "year": 1999, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−6 in summer." } ] }, { "zone": "America/Cordoba", "standardOffset": "UTC−3", "standardOffsetMinutes": -180, "observesDst": false, "dstAdoptedIn": 2008, "dstAbolishedIn": 2010, "unchangedSince": 2010, "eras": [ { "from": 1970, "to": 1988, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 1989, "to": 1990, "clocksMove": true, "standardOffset": "UTC−3", "summerOffset": "UTC−2" }, { "from": 1991, "to": 1991, "clocksMove": true, "standardOffset": "UTC−4", "summerOffset": "UTC−2" }, { "from": 1992, "to": 1993, "clocksMove": true, "standardOffset": "UTC−3", "summerOffset": "UTC−2" }, { "from": 1994, "to": 2007, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 2008, "to": 2009, "clocksMove": true, "standardOffset": "UTC−3", "summerOffset": "UTC−2" }, { "from": 2010, "to": 2027, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null } ], "changes": [ { "year": 1989, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−2 in summer." }, { "year": 1991, "date": "1991-03-03", "description": "Standard time moved from UTC−3 to UTC−4, a shift of 1 hour." }, { "year": 1992, "date": "1991-10-20", "description": "Standard time moved from UTC−4 to UTC−3, a shift of 1 hour." }, { "year": 1994, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." }, { "year": 2008, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−2 in summer." }, { "year": 2010, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." } ] }, { "zone": "America/Coyhaique", "standardOffset": "UTC−3", "standardOffsetMinutes": -180, "observesDst": false, "dstAdoptedIn": 2016, "dstAbolishedIn": 2025, "unchangedSince": 2025, "eras": [ { "from": 1970, "to": 2014, "clocksMove": true, "standardOffset": "UTC−4", "summerOffset": "UTC−3" }, { "from": 2015, "to": 2015, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 2016, "to": 2024, "clocksMove": true, "standardOffset": "UTC−4", "summerOffset": "UTC−3" }, { "from": 2025, "to": 2027, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null } ], "changes": [ { "year": 2015, "date": "2014-09-07", "description": "Standard time moved from UTC−4 to UTC−3, a shift of 1 hour." }, { "year": 2015, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." }, { "year": 2016, "date": "2016-05-15", "description": "Standard time moved from UTC−3 to UTC−4, a shift of 1 hour." }, { "year": 2016, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−3 in summer." }, { "year": 2025, "date": "2024-09-08", "description": "Standard time moved from UTC−4 to UTC−3, a shift of 1 hour." }, { "year": 2025, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." } ] }, { "zone": "America/Cuiaba", "standardOffset": "UTC−4", "standardOffsetMinutes": -240, "observesDst": false, "dstAdoptedIn": 2005, "dstAbolishedIn": 2020, "unchangedSince": 2020, "eras": [ { "from": 1970, "to": 1985, "clocksMove": false, "standardOffset": "UTC−4", "summerOffset": null }, { "from": 1986, "to": 2003, "clocksMove": true, "standardOffset": "UTC−4", "summerOffset": "UTC−3" }, { "from": 2004, "to": 2004, "clocksMove": false, "standardOffset": "UTC−4", "summerOffset": null }, { "from": 2005, "to": 2019, "clocksMove": true, "standardOffset": "UTC−4", "summerOffset": "UTC−3" }, { "from": 2020, "to": 2027, "clocksMove": false, "standardOffset": "UTC−4", "summerOffset": null } ], "changes": [ { "year": 1986, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−3 in summer." }, { "year": 2004, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−4 became the year-round time." }, { "year": 2005, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−3 in summer." }, { "year": 2020, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−4 became the year-round time." } ] }, { "zone": "America/Danmarkshavn", "standardOffset": "UTC+0", "standardOffsetMinutes": 0, "observesDst": false, "dstAdoptedIn": 1980, "dstAbolishedIn": 1996, "unchangedSince": 1996, "eras": [ { "from": 1970, "to": 1979, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 1980, "to": 1995, "clocksMove": true, "standardOffset": "UTC−3", "summerOffset": "UTC−2" }, { "from": 1996, "to": 2027, "clocksMove": false, "standardOffset": "UTC+0", "summerOffset": null } ], "changes": [ { "year": 1980, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−2 in summer." }, { "year": 1996, "date": "1996-01-01", "description": "Standard time moved from UTC−3 to UTC+0, a shift of 3 hours." }, { "year": 1996, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+0 became the year-round time." } ] }, { "zone": "America/Dawson", "standardOffset": "UTC−7", "standardOffsetMinutes": -420, "observesDst": false, "dstAdoptedIn": 1980, "dstAbolishedIn": 2021, "unchangedSince": 2021, "eras": [ { "from": 1970, "to": 1973, "clocksMove": false, "standardOffset": "UTC−9", "summerOffset": null }, { "from": 1974, "to": 1979, "clocksMove": false, "standardOffset": "UTC−8", "summerOffset": null }, { "from": 1980, "to": 2020, "clocksMove": true, "standardOffset": "UTC−8", "summerOffset": "UTC−7" }, { "from": 2021, "to": 2027, "clocksMove": false, "standardOffset": "UTC−7", "summerOffset": null } ], "changes": [ { "year": 1974, "date": "1973-10-28", "description": "Standard time moved from UTC−9 to UTC−8, a shift of 1 hour." }, { "year": 1980, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−7 in summer." }, { "year": 2021, "date": null, "description": "Standard time moved from UTC−8 to UTC−7, a shift of 1 hour." }, { "year": 2021, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−7 became the year-round time." } ] }, { "zone": "America/Dawson_Creek", "standardOffset": "UTC−7", "standardOffsetMinutes": -420, "observesDst": false, "dstAdoptedIn": null, "dstAbolishedIn": 1973, "unchangedSince": 1973, "eras": [ { "from": 1970, "to": 1972, "clocksMove": true, "standardOffset": "UTC−8", "summerOffset": "UTC−7" }, { "from": 1973, "to": 2027, "clocksMove": false, "standardOffset": "UTC−7", "summerOffset": null } ], "changes": [ { "year": 1973, "date": null, "description": "Standard time moved from UTC−8 to UTC−7, a shift of 1 hour." }, { "year": 1973, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−7 became the year-round time." } ] }, { "zone": "America/Denver", "standardOffset": "UTC−7", "standardOffsetMinutes": -420, "observesDst": true, "dstAdoptedIn": 1975, "dstAbolishedIn": null, "unchangedSince": 1975, "eras": [ { "from": 1970, "to": 1973, "clocksMove": true, "standardOffset": "UTC−7", "summerOffset": "UTC−6" }, { "from": 1974, "to": 1974, "clocksMove": false, "standardOffset": "UTC−6", "summerOffset": null }, { "from": 1975, "to": 2027, "clocksMove": true, "standardOffset": "UTC−7", "summerOffset": "UTC−6" } ], "changes": [ { "year": 1974, "date": "1973-10-28", "description": "Standard time moved from UTC−7 to UTC−6, a shift of 1 hour." }, { "year": 1974, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−6 became the year-round time." }, { "year": 1975, "date": "1974-10-27", "description": "Standard time moved from UTC−6 to UTC−7, a shift of 1 hour." }, { "year": 1975, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−6 in summer." } ] }, { "zone": "America/Detroit", "standardOffset": "UTC−5", "standardOffsetMinutes": -300, "observesDst": true, "dstAdoptedIn": 1975, "dstAbolishedIn": null, "unchangedSince": 1975, "eras": [ { "from": 1970, "to": 1972, "clocksMove": false, "standardOffset": "UTC−5", "summerOffset": null }, { "from": 1973, "to": 1973, "clocksMove": true, "standardOffset": "UTC−5", "summerOffset": "UTC−4" }, { "from": 1974, "to": 1974, "clocksMove": false, "standardOffset": "UTC−4", "summerOffset": null }, { "from": 1975, "to": 2027, "clocksMove": true, "standardOffset": "UTC−5", "summerOffset": "UTC−4" } ], "changes": [ { "year": 1973, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−4 in summer." }, { "year": 1974, "date": "1973-10-28", "description": "Standard time moved from UTC−5 to UTC−4, a shift of 1 hour." }, { "year": 1974, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−4 became the year-round time." }, { "year": 1975, "date": "1974-10-27", "description": "Standard time moved from UTC−4 to UTC−5, a shift of 1 hour." }, { "year": 1975, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−4 in summer." } ] }, { "zone": "America/Edmonton", "standardOffset": "UTC−7", "standardOffsetMinutes": -420, "observesDst": true, "dstAdoptedIn": 1972, "dstAbolishedIn": null, "unchangedSince": 1972, "eras": [ { "from": 1970, "to": 1971, "clocksMove": false, "standardOffset": "UTC−7", "summerOffset": null }, { "from": 1972, "to": 2027, "clocksMove": true, "standardOffset": "UTC−7", "summerOffset": "UTC−6" } ], "changes": [ { "year": 1972, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−6 in summer." } ] }, { "zone": "America/Eirunepe", "standardOffset": "UTC−5", "standardOffsetMinutes": -300, "observesDst": false, "dstAdoptedIn": 2008, "dstAbolishedIn": 2009, "unchangedSince": 2014, "eras": [ { "from": 1970, "to": 1985, "clocksMove": false, "standardOffset": "UTC−5", "summerOffset": null }, { "from": 1986, "to": 1988, "clocksMove": true, "standardOffset": "UTC−5", "summerOffset": "UTC−4" }, { "from": 1989, "to": 1993, "clocksMove": false, "standardOffset": "UTC−5", "summerOffset": null }, { "from": 1994, "to": 1994, "clocksMove": true, "standardOffset": "UTC−5", "summerOffset": "UTC−4" }, { "from": 1995, "to": 2007, "clocksMove": false, "standardOffset": "UTC−5", "summerOffset": null }, { "from": 2008, "to": 2008, "clocksMove": true, "standardOffset": "UTC−5", "summerOffset": "UTC−4" }, { "from": 2009, "to": 2013, "clocksMove": false, "standardOffset": "UTC−4", "summerOffset": null }, { "from": 2014, "to": 2027, "clocksMove": false, "standardOffset": "UTC−5", "summerOffset": null } ], "changes": [ { "year": 1986, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−4 in summer." }, { "year": 1989, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−5 became the year-round time." }, { "year": 1994, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−4 in summer." }, { "year": 1995, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−5 became the year-round time." }, { "year": 2008, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−4 in summer." }, { "year": 2009, "date": "2008-06-24", "description": "Standard time moved from UTC−5 to UTC−4, a shift of 1 hour." }, { "year": 2009, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−4 became the year-round time." }, { "year": 2014, "date": "2013-11-10", "description": "Standard time moved from UTC−4 to UTC−5, a shift of 1 hour." } ] }, { "zone": "America/El_Salvador", "standardOffset": "UTC−6", "standardOffsetMinutes": -360, "observesDst": false, "dstAdoptedIn": 1987, "dstAbolishedIn": 1989, "unchangedSince": 1989, "eras": [ { "from": 1970, "to": 1986, "clocksMove": false, "standardOffset": "UTC−6", "summerOffset": null }, { "from": 1987, "to": 1988, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" }, { "from": 1989, "to": 2027, "clocksMove": false, "standardOffset": "UTC−6", "summerOffset": null } ], "changes": [ { "year": 1987, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−5 in summer." }, { "year": 1989, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−6 became the year-round time." } ] }, { "zone": "America/Fort_Nelson", "standardOffset": "UTC−7", "standardOffsetMinutes": -420, "observesDst": false, "dstAdoptedIn": null, "dstAbolishedIn": 2016, "unchangedSince": 2016, "eras": [ { "from": 1970, "to": 2015, "clocksMove": true, "standardOffset": "UTC−8", "summerOffset": "UTC−7" }, { "from": 2016, "to": 2027, "clocksMove": false, "standardOffset": "UTC−7", "summerOffset": null } ], "changes": [ { "year": 2016, "date": null, "description": "Standard time moved from UTC−8 to UTC−7, a shift of 1 hour." }, { "year": 2016, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−7 became the year-round time." } ] }, { "zone": "America/Fortaleza", "standardOffset": "UTC−3", "standardOffsetMinutes": -180, "observesDst": false, "dstAdoptedIn": 2002, "dstAbolishedIn": 2003, "unchangedSince": 2003, "eras": [ { "from": 1970, "to": 1985, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 1986, "to": 1990, "clocksMove": true, "standardOffset": "UTC−3", "summerOffset": "UTC−2" }, { "from": 1991, "to": 1999, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 2000, "to": 2000, "clocksMove": true, "standardOffset": "UTC−3", "summerOffset": "UTC−2" }, { "from": 2001, "to": 2001, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 2002, "to": 2002, "clocksMove": true, "standardOffset": "UTC−3", "summerOffset": "UTC−2" }, { "from": 2003, "to": 2027, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null } ], "changes": [ { "year": 1986, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−2 in summer." }, { "year": 1991, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." }, { "year": 2000, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−2 in summer." }, { "year": 2001, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." }, { "year": 2002, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−2 in summer." }, { "year": 2003, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." } ] }, { "zone": "America/Godthab", "standardOffset": "UTC−2", "standardOffsetMinutes": -120, "observesDst": true, "dstAdoptedIn": 1980, "dstAbolishedIn": null, "unchangedSince": 2024, "eras": [ { "from": 1970, "to": 1979, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 1980, "to": 2023, "clocksMove": true, "standardOffset": "UTC−3", "summerOffset": "UTC−2" }, { "from": 2024, "to": 2027, "clocksMove": true, "standardOffset": "UTC−2", "summerOffset": "UTC−1" } ], "changes": [ { "year": 1980, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−2 in summer." }, { "year": 2024, "date": "2024-03-31", "description": "Standard time moved from UTC−3 to UTC−2, a shift of 1 hour." } ] }, { "zone": "America/Grand_Turk", "standardOffset": "UTC−5", "standardOffsetMinutes": -300, "observesDst": true, "dstAdoptedIn": 2019, "dstAbolishedIn": null, "unchangedSince": 2019, "eras": [ { "from": 1970, "to": 1978, "clocksMove": false, "standardOffset": "UTC−5", "summerOffset": null }, { "from": 1979, "to": 2015, "clocksMove": true, "standardOffset": "UTC−5", "summerOffset": "UTC−4" }, { "from": 2016, "to": 2018, "clocksMove": false, "standardOffset": "UTC−4", "summerOffset": null }, { "from": 2019, "to": 2027, "clocksMove": true, "standardOffset": "UTC−5", "summerOffset": "UTC−4" } ], "changes": [ { "year": 1979, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−4 in summer." }, { "year": 2016, "date": null, "description": "Standard time moved from UTC−5 to UTC−4, a shift of 1 hour." }, { "year": 2016, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−4 became the year-round time." }, { "year": 2019, "date": "2018-11-04", "description": "Standard time moved from UTC−4 to UTC−5, a shift of 1 hour." }, { "year": 2019, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−4 in summer." } ] }, { "zone": "America/Guatemala", "standardOffset": "UTC−6", "standardOffsetMinutes": -360, "observesDst": false, "dstAdoptedIn": 2006, "dstAbolishedIn": 2007, "unchangedSince": 2007, "eras": [ { "from": 1970, "to": 1973, "clocksMove": false, "standardOffset": "UTC−6", "summerOffset": null }, { "from": 1974, "to": 1974, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" }, { "from": 1975, "to": 1982, "clocksMove": false, "standardOffset": "UTC−6", "summerOffset": null }, { "from": 1983, "to": 1983, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" }, { "from": 1984, "to": 1990, "clocksMove": false, "standardOffset": "UTC−6", "summerOffset": null }, { "from": 1991, "to": 1991, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" }, { "from": 1992, "to": 2005, "clocksMove": false, "standardOffset": "UTC−6", "summerOffset": null }, { "from": 2006, "to": 2006, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" }, { "from": 2007, "to": 2027, "clocksMove": false, "standardOffset": "UTC−6", "summerOffset": null } ], "changes": [ { "year": 1974, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−5 in summer." }, { "year": 1975, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−6 became the year-round time." }, { "year": 1983, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−5 in summer." }, { "year": 1984, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−6 became the year-round time." }, { "year": 1991, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−5 in summer." }, { "year": 1992, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−6 became the year-round time." }, { "year": 2006, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−5 in summer." }, { "year": 2007, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−6 became the year-round time." } ] }, { "zone": "America/Guayaquil", "standardOffset": "UTC−5", "standardOffsetMinutes": -300, "observesDst": false, "dstAdoptedIn": 1993, "dstAbolishedIn": 1994, "unchangedSince": 1994, "eras": [ { "from": 1970, "to": 1992, "clocksMove": false, "standardOffset": "UTC−5", "summerOffset": null }, { "from": 1993, "to": 1993, "clocksMove": true, "standardOffset": "UTC−5", "summerOffset": "UTC−4" }, { "from": 1994, "to": 2027, "clocksMove": false, "standardOffset": "UTC−5", "summerOffset": null } ], "changes": [ { "year": 1993, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−4 in summer." }, { "year": 1994, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−5 became the year-round time." } ] }, { "zone": "America/Guyana", "standardOffset": "UTC−4", "standardOffsetMinutes": -240, "observesDst": false, "dstAdoptedIn": 1992, "dstAbolishedIn": 1993, "unchangedSince": 1993, "eras": [ { "from": 1970, "to": 1975, "clocksMove": false, "standardOffset": "UTC−3:45", "summerOffset": null }, { "from": 1976, "to": 1991, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 1992, "to": 1992, "clocksMove": true, "standardOffset": "UTC−4", "summerOffset": "UTC−3" }, { "from": 1993, "to": 2027, "clocksMove": false, "standardOffset": "UTC−4", "summerOffset": null } ], "changes": [ { "year": 1976, "date": "1975-08-01", "description": "Standard time moved from UTC−3:45 to UTC−3, a shift of 45 minutes." }, { "year": 1992, "date": "1992-03-29", "description": "Standard time moved from UTC−3 to UTC−4, a shift of 1 hour." }, { "year": 1992, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−3 in summer." }, { "year": 1993, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−4 became the year-round time." } ] }, { "zone": "America/Havana", "standardOffset": "UTC−5", "standardOffsetMinutes": -300, "observesDst": true, "dstAdoptedIn": 2007, "dstAbolishedIn": null, "unchangedSince": 2007, "eras": [ { "from": 1970, "to": 2004, "clocksMove": true, "standardOffset": "UTC−5", "summerOffset": "UTC−4" }, { "from": 2005, "to": 2006, "clocksMove": false, "standardOffset": "UTC−4", "summerOffset": null }, { "from": 2007, "to": 2027, "clocksMove": true, "standardOffset": "UTC−5", "summerOffset": "UTC−4" } ], "changes": [ { "year": 2005, "date": null, "description": "Standard time moved from UTC−5 to UTC−4, a shift of 1 hour." }, { "year": 2005, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−4 became the year-round time." }, { "year": 2007, "date": "2006-10-29", "description": "Standard time moved from UTC−4 to UTC−5, a shift of 1 hour." }, { "year": 2007, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−4 in summer." } ] }, { "zone": "America/Hermosillo", "standardOffset": "UTC−7", "standardOffsetMinutes": -420, "observesDst": false, "dstAdoptedIn": 1996, "dstAbolishedIn": 1999, "unchangedSince": 1999, "eras": [ { "from": 1970, "to": 1995, "clocksMove": false, "standardOffset": "UTC−7", "summerOffset": null }, { "from": 1996, "to": 1998, "clocksMove": true, "standardOffset": "UTC−7", "summerOffset": "UTC−6" }, { "from": 1999, "to": 2027, "clocksMove": false, "standardOffset": "UTC−7", "summerOffset": null } ], "changes": [ { "year": 1996, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−6 in summer." }, { "year": 1999, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−7 became the year-round time." } ] }, { "zone": "America/Indiana/Knox", "standardOffset": "UTC−6", "standardOffsetMinutes": -360, "observesDst": true, "dstAdoptedIn": 2007, "dstAbolishedIn": null, "unchangedSince": 2007, "eras": [ { "from": 1970, "to": 1973, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" }, { "from": 1974, "to": 1974, "clocksMove": false, "standardOffset": "UTC−5", "summerOffset": null }, { "from": 1975, "to": 1991, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" }, { "from": 1992, "to": 2006, "clocksMove": false, "standardOffset": "UTC−5", "summerOffset": null }, { "from": 2007, "to": 2027, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" } ], "changes": [ { "year": 1974, "date": "1973-10-28", "description": "Standard time moved from UTC−6 to UTC−5, a shift of 1 hour." }, { "year": 1974, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−5 became the year-round time." }, { "year": 1975, "date": "1974-10-27", "description": "Standard time moved from UTC−5 to UTC−6, a shift of 1 hour." }, { "year": 1975, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−5 in summer." }, { "year": 1992, "date": null, "description": "Standard time moved from UTC−6 to UTC−5, a shift of 1 hour." }, { "year": 1992, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−5 became the year-round time." }, { "year": 2007, "date": "2006-10-29", "description": "Standard time moved from UTC−5 to UTC−6, a shift of 1 hour." }, { "year": 2007, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−5 in summer." } ] }, { "zone": "America/Indiana/Petersburg", "standardOffset": "UTC−5", "standardOffsetMinutes": -300, "observesDst": true, "dstAdoptedIn": 2007, "dstAbolishedIn": null, "unchangedSince": 2008, "eras": [ { "from": 1970, "to": 1973, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" }, { "from": 1974, "to": 1974, "clocksMove": false, "standardOffset": "UTC−5", "summerOffset": null }, { "from": 1975, "to": 1977, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" }, { "from": 1978, "to": 2006, "clocksMove": false, "standardOffset": "UTC−5", "summerOffset": null }, { "from": 2007, "to": 2007, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" }, { "from": 2008, "to": 2027, "clocksMove": true, "standardOffset": "UTC−5", "summerOffset": "UTC−4" } ], "changes": [ { "year": 1974, "date": "1973-10-28", "description": "Standard time moved from UTC−6 to UTC−5, a shift of 1 hour." }, { "year": 1974, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−5 became the year-round time." }, { "year": 1975, "date": "1974-10-27", "description": "Standard time moved from UTC−5 to UTC−6, a shift of 1 hour." }, { "year": 1975, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−5 in summer." }, { "year": 1978, "date": null, "description": "Standard time moved from UTC−6 to UTC−5, a shift of 1 hour." }, { "year": 1978, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−5 became the year-round time." }, { "year": 2007, "date": "2006-10-29", "description": "Standard time moved from UTC−5 to UTC−6, a shift of 1 hour." }, { "year": 2007, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−5 in summer." }, { "year": 2008, "date": "2008-03-09", "description": "Standard time moved from UTC−6 to UTC−5, a shift of 1 hour." } ] }, { "zone": "America/Indiana/Tell_City", "standardOffset": "UTC−6", "standardOffsetMinutes": -360, "observesDst": true, "dstAdoptedIn": 2007, "dstAbolishedIn": null, "unchangedSince": 2007, "eras": [ { "from": 1970, "to": 1970, "clocksMove": true, "standardOffset": "UTC−5", "summerOffset": "UTC−4" }, { "from": 1971, "to": 2006, "clocksMove": false, "standardOffset": "UTC−5", "summerOffset": null }, { "from": 2007, "to": 2027, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" } ], "changes": [ { "year": 1971, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−5 became the year-round time." }, { "year": 2007, "date": "2006-10-29", "description": "Standard time moved from UTC−5 to UTC−6, a shift of 1 hour." }, { "year": 2007, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−5 in summer." } ] }, { "zone": "America/Indiana/Vincennes", "standardOffset": "UTC−5", "standardOffsetMinutes": -300, "observesDst": true, "dstAdoptedIn": 2007, "dstAbolishedIn": null, "unchangedSince": 2008, "eras": [ { "from": 1970, "to": 1970, "clocksMove": true, "standardOffset": "UTC−5", "summerOffset": "UTC−4" }, { "from": 1971, "to": 2006, "clocksMove": false, "standardOffset": "UTC−5", "summerOffset": null }, { "from": 2007, "to": 2007, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" }, { "from": 2008, "to": 2027, "clocksMove": true, "standardOffset": "UTC−5", "summerOffset": "UTC−4" } ], "changes": [ { "year": 1971, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−5 became the year-round time." }, { "year": 2007, "date": "2006-10-29", "description": "Standard time moved from UTC−5 to UTC−6, a shift of 1 hour." }, { "year": 2007, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−5 in summer." }, { "year": 2008, "date": "2008-03-09", "description": "Standard time moved from UTC−6 to UTC−5, a shift of 1 hour." } ] }, { "zone": "America/Indiana/Winamac", "standardOffset": "UTC−5", "standardOffsetMinutes": -300, "observesDst": true, "dstAdoptedIn": 2007, "dstAbolishedIn": null, "unchangedSince": 2008, "eras": [ { "from": 1970, "to": 1970, "clocksMove": true, "standardOffset": "UTC−5", "summerOffset": "UTC−4" }, { "from": 1971, "to": 2006, "clocksMove": false, "standardOffset": "UTC−5", "summerOffset": null }, { "from": 2007, "to": 2007, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−4" }, { "from": 2008, "to": 2027, "clocksMove": true, "standardOffset": "UTC−5", "summerOffset": "UTC−4" } ], "changes": [ { "year": 1971, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−5 became the year-round time." }, { "year": 2007, "date": "2007-03-11", "description": "Standard time moved from UTC−5 to UTC−6, a shift of 1 hour." }, { "year": 2007, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−4 in summer." }, { "year": 2008, "date": "2007-11-04", "description": "Standard time moved from UTC−6 to UTC−5, a shift of 1 hour." } ] }, { "zone": "America/Inuvik", "standardOffset": "UTC−7", "standardOffsetMinutes": -420, "observesDst": true, "dstAdoptedIn": 1972, "dstAbolishedIn": null, "unchangedSince": 1980, "eras": [ { "from": 1970, "to": 1971, "clocksMove": false, "standardOffset": "UTC−8", "summerOffset": null }, { "from": 1972, "to": 1979, "clocksMove": true, "standardOffset": "UTC−8", "summerOffset": "UTC−7" }, { "from": 1980, "to": 2027, "clocksMove": true, "standardOffset": "UTC−7", "summerOffset": "UTC−6" } ], "changes": [ { "year": 1972, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−7 in summer." }, { "year": 1980, "date": "1979-10-28", "description": "Standard time moved from UTC−8 to UTC−7, a shift of 1 hour." } ] }, { "zone": "America/Iqaluit", "standardOffset": "UTC−5", "standardOffsetMinutes": -300, "observesDst": true, "dstAdoptedIn": 1972, "dstAbolishedIn": null, "unchangedSince": 2001, "eras": [ { "from": 1970, "to": 1971, "clocksMove": false, "standardOffset": "UTC−5", "summerOffset": null }, { "from": 1972, "to": 1999, "clocksMove": true, "standardOffset": "UTC−5", "summerOffset": "UTC−4" }, { "from": 2000, "to": 2000, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" }, { "from": 2001, "to": 2027, "clocksMove": true, "standardOffset": "UTC−5", "summerOffset": "UTC−4" } ], "changes": [ { "year": 1972, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−4 in summer." }, { "year": 2000, "date": "1999-10-31", "description": "Standard time moved from UTC−5 to UTC−6, a shift of 1 hour." }, { "year": 2001, "date": "2001-04-01", "description": "Standard time moved from UTC−6 to UTC−5, a shift of 1 hour." } ] }, { "zone": "America/Jamaica", "standardOffset": "UTC−5", "standardOffsetMinutes": -300, "observesDst": false, "dstAdoptedIn": 1975, "dstAbolishedIn": 1984, "unchangedSince": 1984, "eras": [ { "from": 1970, "to": 1973, "clocksMove": false, "standardOffset": "UTC−5", "summerOffset": null }, { "from": 1974, "to": 1974, "clocksMove": false, "standardOffset": "UTC−4", "summerOffset": null }, { "from": 1975, "to": 1983, "clocksMove": true, "standardOffset": "UTC−5", "summerOffset": "UTC−4" }, { "from": 1984, "to": 2027, "clocksMove": false, "standardOffset": "UTC−5", "summerOffset": null } ], "changes": [ { "year": 1974, "date": "1974-01-06", "description": "Standard time moved from UTC−5 to UTC−4, a shift of 1 hour." }, { "year": 1975, "date": "1974-10-27", "description": "Standard time moved from UTC−4 to UTC−5, a shift of 1 hour." }, { "year": 1975, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−4 in summer." }, { "year": 1984, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−5 became the year-round time." } ] }, { "zone": "America/Jujuy", "standardOffset": "UTC−3", "standardOffsetMinutes": -180, "observesDst": false, "dstAdoptedIn": 2008, "dstAbolishedIn": 2009, "unchangedSince": 2009, "eras": [ { "from": 1970, "to": 1988, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 1989, "to": 1989, "clocksMove": true, "standardOffset": "UTC−3", "summerOffset": "UTC−2" }, { "from": 1990, "to": 1991, "clocksMove": true, "standardOffset": "UTC−4", "summerOffset": "UTC−2" }, { "from": 1992, "to": 1993, "clocksMove": true, "standardOffset": "UTC−3", "summerOffset": "UTC−2" }, { "from": 1994, "to": 2007, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 2008, "to": 2008, "clocksMove": true, "standardOffset": "UTC−3", "summerOffset": "UTC−2" }, { "from": 2009, "to": 2027, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null } ], "changes": [ { "year": 1989, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−2 in summer." }, { "year": 1990, "date": "1990-03-04", "description": "Standard time moved from UTC−3 to UTC−4, a shift of 1 hour." }, { "year": 1992, "date": "1991-10-06", "description": "Standard time moved from UTC−4 to UTC−3, a shift of 1 hour." }, { "year": 1994, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." }, { "year": 2008, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−2 in summer." }, { "year": 2009, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." } ] }, { "zone": "America/Juneau", "standardOffset": "UTC−9", "standardOffsetMinutes": -540, "observesDst": true, "dstAdoptedIn": 1981, "dstAbolishedIn": null, "unchangedSince": 1984, "eras": [ { "from": 1970, "to": 1973, "clocksMove": true, "standardOffset": "UTC−8", "summerOffset": "UTC−7" }, { "from": 1974, "to": 1974, "clocksMove": false, "standardOffset": "UTC−7", "summerOffset": null }, { "from": 1975, "to": 1979, "clocksMove": true, "standardOffset": "UTC−8", "summerOffset": "UTC−7" }, { "from": 1980, "to": 1980, "clocksMove": false, "standardOffset": "UTC−8", "summerOffset": null }, { "from": 1981, "to": 1983, "clocksMove": true, "standardOffset": "UTC−8", "summerOffset": "UTC−7" }, { "from": 1984, "to": 2027, "clocksMove": true, "standardOffset": "UTC−9", "summerOffset": "UTC−8" } ], "changes": [ { "year": 1974, "date": "1973-10-28", "description": "Standard time moved from UTC−8 to UTC−7, a shift of 1 hour." }, { "year": 1974, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−7 became the year-round time." }, { "year": 1975, "date": "1974-10-27", "description": "Standard time moved from UTC−7 to UTC−8, a shift of 1 hour." }, { "year": 1975, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−7 in summer." }, { "year": 1980, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−8 became the year-round time." }, { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−7 in summer." }, { "year": 1984, "date": "1983-10-30", "description": "Standard time moved from UTC−8 to UTC−9, a shift of 1 hour." } ] }, { "zone": "America/Kentucky/Monticello", "standardOffset": "UTC−5", "standardOffsetMinutes": -300, "observesDst": true, "dstAdoptedIn": 1975, "dstAbolishedIn": null, "unchangedSince": 2001, "eras": [ { "from": 1970, "to": 1973, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" }, { "from": 1974, "to": 1974, "clocksMove": false, "standardOffset": "UTC−5", "summerOffset": null }, { "from": 1975, "to": 2000, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" }, { "from": 2001, "to": 2027, "clocksMove": true, "standardOffset": "UTC−5", "summerOffset": "UTC−4" } ], "changes": [ { "year": 1974, "date": "1973-10-28", "description": "Standard time moved from UTC−6 to UTC−5, a shift of 1 hour." }, { "year": 1974, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−5 became the year-round time." }, { "year": 1975, "date": "1974-10-27", "description": "Standard time moved from UTC−5 to UTC−6, a shift of 1 hour." }, { "year": 1975, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−5 in summer." }, { "year": 2001, "date": "2001-04-01", "description": "Standard time moved from UTC−6 to UTC−5, a shift of 1 hour." } ] }, { "zone": "America/Lima", "standardOffset": "UTC−5", "standardOffsetMinutes": -300, "observesDst": false, "dstAdoptedIn": 1994, "dstAbolishedIn": 1995, "unchangedSince": 1995, "eras": [ { "from": 1970, "to": 1985, "clocksMove": false, "standardOffset": "UTC−5", "summerOffset": null }, { "from": 1986, "to": 1987, "clocksMove": true, "standardOffset": "UTC−5", "summerOffset": "UTC−4" }, { "from": 1988, "to": 1989, "clocksMove": false, "standardOffset": "UTC−5", "summerOffset": null }, { "from": 1990, "to": 1990, "clocksMove": true, "standardOffset": "UTC−5", "summerOffset": "UTC−4" }, { "from": 1991, "to": 1993, "clocksMove": false, "standardOffset": "UTC−5", "summerOffset": null }, { "from": 1994, "to": 1994, "clocksMove": true, "standardOffset": "UTC−5", "summerOffset": "UTC−4" }, { "from": 1995, "to": 2027, "clocksMove": false, "standardOffset": "UTC−5", "summerOffset": null } ], "changes": [ { "year": 1986, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−4 in summer." }, { "year": 1988, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−5 became the year-round time." }, { "year": 1990, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−4 in summer." }, { "year": 1991, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−5 became the year-round time." }, { "year": 1994, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−4 in summer." }, { "year": 1995, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−5 became the year-round time." } ] }, { "zone": "America/Los_Angeles", "standardOffset": "UTC−8", "standardOffsetMinutes": -480, "observesDst": true, "dstAdoptedIn": 1975, "dstAbolishedIn": null, "unchangedSince": 1975, "eras": [ { "from": 1970, "to": 1973, "clocksMove": true, "standardOffset": "UTC−8", "summerOffset": "UTC−7" }, { "from": 1974, "to": 1974, "clocksMove": false, "standardOffset": "UTC−7", "summerOffset": null }, { "from": 1975, "to": 2027, "clocksMove": true, "standardOffset": "UTC−8", "summerOffset": "UTC−7" } ], "changes": [ { "year": 1974, "date": "1973-10-28", "description": "Standard time moved from UTC−8 to UTC−7, a shift of 1 hour." }, { "year": 1974, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−7 became the year-round time." }, { "year": 1975, "date": "1974-10-27", "description": "Standard time moved from UTC−7 to UTC−8, a shift of 1 hour." }, { "year": 1975, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−7 in summer." } ] }, { "zone": "America/Maceio", "standardOffset": "UTC−3", "standardOffsetMinutes": -180, "observesDst": false, "dstAdoptedIn": 2002, "dstAbolishedIn": 2003, "unchangedSince": 2003, "eras": [ { "from": 1970, "to": 1985, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 1986, "to": 1990, "clocksMove": true, "standardOffset": "UTC−3", "summerOffset": "UTC−2" }, { "from": 1991, "to": 1995, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 1996, "to": 1996, "clocksMove": true, "standardOffset": "UTC−3", "summerOffset": "UTC−2" }, { "from": 1997, "to": 1999, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 2000, "to": 2000, "clocksMove": true, "standardOffset": "UTC−3", "summerOffset": "UTC−2" }, { "from": 2001, "to": 2001, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 2002, "to": 2002, "clocksMove": true, "standardOffset": "UTC−3", "summerOffset": "UTC−2" }, { "from": 2003, "to": 2027, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null } ], "changes": [ { "year": 1986, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−2 in summer." }, { "year": 1991, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." }, { "year": 1996, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−2 in summer." }, { "year": 1997, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." }, { "year": 2000, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−2 in summer." }, { "year": 2001, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." }, { "year": 2002, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−2 in summer." }, { "year": 2003, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." } ] }, { "zone": "America/Managua", "standardOffset": "UTC−6", "standardOffsetMinutes": -360, "observesDst": false, "dstAdoptedIn": 2005, "dstAbolishedIn": 2007, "unchangedSince": 2007, "eras": [ { "from": 1970, "to": 1972, "clocksMove": false, "standardOffset": "UTC−6", "summerOffset": null }, { "from": 1973, "to": 1973, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" }, { "from": 1974, "to": 1974, "clocksMove": false, "standardOffset": "UTC−5", "summerOffset": null }, { "from": 1975, "to": 1975, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" }, { "from": 1976, "to": 1991, "clocksMove": false, "standardOffset": "UTC−6", "summerOffset": null }, { "from": 1992, "to": 1996, "clocksMove": false, "standardOffset": "UTC−5", "summerOffset": null }, { "from": 1997, "to": 2004, "clocksMove": false, "standardOffset": "UTC−6", "summerOffset": null }, { "from": 2005, "to": 2006, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" }, { "from": 2007, "to": 2027, "clocksMove": false, "standardOffset": "UTC−6", "summerOffset": null } ], "changes": [ { "year": 1973, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−5 in summer." }, { "year": 1974, "date": null, "description": "Standard time moved from UTC−6 to UTC−5, a shift of 1 hour." }, { "year": 1974, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−5 became the year-round time." }, { "year": 1975, "date": "1975-02-16", "description": "Standard time moved from UTC−5 to UTC−6, a shift of 1 hour." }, { "year": 1975, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−5 in summer." }, { "year": 1976, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−6 became the year-round time." }, { "year": 1992, "date": "1992-01-01", "description": "Standard time moved from UTC−6 to UTC−5, a shift of 1 hour." }, { "year": 1997, "date": "1997-01-01", "description": "Standard time moved from UTC−5 to UTC−6, a shift of 1 hour." }, { "year": 2005, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−5 in summer." }, { "year": 2007, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−6 became the year-round time." } ] }, { "zone": "America/Manaus", "standardOffset": "UTC−4", "standardOffsetMinutes": -240, "observesDst": false, "dstAdoptedIn": 1994, "dstAbolishedIn": 1995, "unchangedSince": 1995, "eras": [ { "from": 1970, "to": 1985, "clocksMove": false, "standardOffset": "UTC−4", "summerOffset": null }, { "from": 1986, "to": 1988, "clocksMove": true, "standardOffset": "UTC−4", "summerOffset": "UTC−3" }, { "from": 1989, "to": 1993, "clocksMove": false, "standardOffset": "UTC−4", "summerOffset": null }, { "from": 1994, "to": 1994, "clocksMove": true, "standardOffset": "UTC−4", "summerOffset": "UTC−3" }, { "from": 1995, "to": 2027, "clocksMove": false, "standardOffset": "UTC−4", "summerOffset": null } ], "changes": [ { "year": 1986, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−3 in summer." }, { "year": 1989, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−4 became the year-round time." }, { "year": 1994, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−3 in summer." }, { "year": 1995, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−4 became the year-round time." } ] }, { "zone": "America/Matamoros", "standardOffset": "UTC−6", "standardOffsetMinutes": -360, "observesDst": true, "dstAdoptedIn": 1996, "dstAbolishedIn": null, "unchangedSince": 1996, "eras": [ { "from": 1970, "to": 1987, "clocksMove": false, "standardOffset": "UTC−6", "summerOffset": null }, { "from": 1988, "to": 1988, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" }, { "from": 1989, "to": 1995, "clocksMove": false, "standardOffset": "UTC−6", "summerOffset": null }, { "from": 1996, "to": 2027, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" } ], "changes": [ { "year": 1988, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−5 in summer." }, { "year": 1989, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−6 became the year-round time." }, { "year": 1996, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−5 in summer." } ] }, { "zone": "America/Mazatlan", "standardOffset": "UTC−7", "standardOffsetMinutes": -420, "observesDst": false, "dstAdoptedIn": 1996, "dstAbolishedIn": 2023, "unchangedSince": 2023, "eras": [ { "from": 1970, "to": 1995, "clocksMove": false, "standardOffset": "UTC−7", "summerOffset": null }, { "from": 1996, "to": 2022, "clocksMove": true, "standardOffset": "UTC−7", "summerOffset": "UTC−6" }, { "from": 2023, "to": 2027, "clocksMove": false, "standardOffset": "UTC−7", "summerOffset": null } ], "changes": [ { "year": 1996, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−6 in summer." }, { "year": 2023, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−7 became the year-round time." } ] }, { "zone": "America/Mendoza", "standardOffset": "UTC−3", "standardOffsetMinutes": -180, "observesDst": false, "dstAdoptedIn": 2008, "dstAbolishedIn": 2009, "unchangedSince": 2009, "eras": [ { "from": 1970, "to": 1988, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 1989, "to": 1989, "clocksMove": true, "standardOffset": "UTC−3", "summerOffset": "UTC−2" }, { "from": 1990, "to": 1992, "clocksMove": true, "standardOffset": "UTC−4", "summerOffset": "UTC−2" }, { "from": 1993, "to": 1993, "clocksMove": true, "standardOffset": "UTC−3", "summerOffset": "UTC−2" }, { "from": 1994, "to": 2003, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 2004, "to": 2004, "clocksMove": true, "standardOffset": "UTC−4", "summerOffset": "UTC−3" }, { "from": 2005, "to": 2007, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 2008, "to": 2008, "clocksMove": true, "standardOffset": "UTC−3", "summerOffset": "UTC−2" }, { "from": 2009, "to": 2027, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null } ], "changes": [ { "year": 1989, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−2 in summer." }, { "year": 1990, "date": "1990-03-04", "description": "Standard time moved from UTC−3 to UTC−4, a shift of 1 hour." }, { "year": 1993, "date": "1992-10-18", "description": "Standard time moved from UTC−4 to UTC−3, a shift of 1 hour." }, { "year": 1994, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." }, { "year": 2004, "date": "2004-05-23", "description": "Standard time moved from UTC−3 to UTC−4, a shift of 1 hour." }, { "year": 2004, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−3 in summer." }, { "year": 2005, "date": "2004-09-26", "description": "Standard time moved from UTC−4 to UTC−3, a shift of 1 hour." }, { "year": 2005, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." }, { "year": 2008, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−2 in summer." }, { "year": 2009, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." } ] }, { "zone": "America/Menominee", "standardOffset": "UTC−6", "standardOffsetMinutes": -360, "observesDst": true, "dstAdoptedIn": 1975, "dstAbolishedIn": null, "unchangedSince": 1975, "eras": [ { "from": 1970, "to": 1974, "clocksMove": false, "standardOffset": "UTC−5", "summerOffset": null }, { "from": 1975, "to": 2027, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" } ], "changes": [ { "year": 1975, "date": "1974-10-27", "description": "Standard time moved from UTC−5 to UTC−6, a shift of 1 hour." }, { "year": 1975, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−5 in summer." } ] }, { "zone": "America/Merida", "standardOffset": "UTC−6", "standardOffsetMinutes": -360, "observesDst": false, "dstAdoptedIn": 1996, "dstAbolishedIn": 2023, "unchangedSince": 2023, "eras": [ { "from": 1970, "to": 1981, "clocksMove": false, "standardOffset": "UTC−6", "summerOffset": null }, { "from": 1982, "to": 1982, "clocksMove": false, "standardOffset": "UTC−5", "summerOffset": null }, { "from": 1983, "to": 1995, "clocksMove": false, "standardOffset": "UTC−6", "summerOffset": null }, { "from": 1996, "to": 2022, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" }, { "from": 2023, "to": 2027, "clocksMove": false, "standardOffset": "UTC−6", "summerOffset": null } ], "changes": [ { "year": 1982, "date": "1981-12-26", "description": "Standard time moved from UTC−6 to UTC−5, a shift of 1 hour." }, { "year": 1983, "date": "1982-11-02", "description": "Standard time moved from UTC−5 to UTC−6, a shift of 1 hour." }, { "year": 1996, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−5 in summer." }, { "year": 2023, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−6 became the year-round time." } ] }, { "zone": "America/Metlakatla", "standardOffset": "UTC−9", "standardOffsetMinutes": -540, "observesDst": true, "dstAdoptedIn": 2020, "dstAbolishedIn": null, "unchangedSince": 2020, "eras": [ { "from": 1970, "to": 1973, "clocksMove": true, "standardOffset": "UTC−8", "summerOffset": "UTC−7" }, { "from": 1974, "to": 1974, "clocksMove": false, "standardOffset": "UTC−7", "summerOffset": null }, { "from": 1975, "to": 1983, "clocksMove": true, "standardOffset": "UTC−8", "summerOffset": "UTC−7" }, { "from": 1984, "to": 2015, "clocksMove": false, "standardOffset": "UTC−8", "summerOffset": null }, { "from": 2016, "to": 2018, "clocksMove": true, "standardOffset": "UTC−9", "summerOffset": "UTC−8" }, { "from": 2019, "to": 2019, "clocksMove": false, "standardOffset": "UTC−8", "summerOffset": null }, { "from": 2020, "to": 2027, "clocksMove": true, "standardOffset": "UTC−9", "summerOffset": "UTC−8" } ], "changes": [ { "year": 1974, "date": "1973-10-28", "description": "Standard time moved from UTC−8 to UTC−7, a shift of 1 hour." }, { "year": 1974, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−7 became the year-round time." }, { "year": 1975, "date": "1974-10-27", "description": "Standard time moved from UTC−7 to UTC−8, a shift of 1 hour." }, { "year": 1975, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−7 in summer." }, { "year": 1984, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−8 became the year-round time." }, { "year": 2016, "date": "2015-11-01", "description": "Standard time moved from UTC−8 to UTC−9, a shift of 1 hour." }, { "year": 2016, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−8 in summer." }, { "year": 2019, "date": "2019-01-20", "description": "Standard time moved from UTC−9 to UTC−8, a shift of 1 hour." }, { "year": 2019, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−8 became the year-round time." }, { "year": 2020, "date": "2019-11-03", "description": "Standard time moved from UTC−8 to UTC−9, a shift of 1 hour." }, { "year": 2020, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−8 in summer." } ] }, { "zone": "America/Mexico_City", "standardOffset": "UTC−6", "standardOffsetMinutes": -360, "observesDst": false, "dstAdoptedIn": 1996, "dstAbolishedIn": 2023, "unchangedSince": 2023, "eras": [ { "from": 1970, "to": 1995, "clocksMove": false, "standardOffset": "UTC−6", "summerOffset": null }, { "from": 1996, "to": 2022, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" }, { "from": 2023, "to": 2027, "clocksMove": false, "standardOffset": "UTC−6", "summerOffset": null } ], "changes": [ { "year": 1996, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−5 in summer." }, { "year": 2023, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−6 became the year-round time." } ] }, { "zone": "America/Miquelon", "standardOffset": "UTC−3", "standardOffsetMinutes": -180, "observesDst": true, "dstAdoptedIn": 1987, "dstAbolishedIn": null, "unchangedSince": 1987, "eras": [ { "from": 1970, "to": 1979, "clocksMove": false, "standardOffset": "UTC−4", "summerOffset": null }, { "from": 1980, "to": 1980, "clocksMove": true, "standardOffset": "UTC−4", "summerOffset": "UTC−3" }, { "from": 1981, "to": 1986, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 1987, "to": 2027, "clocksMove": true, "standardOffset": "UTC−3", "summerOffset": "UTC−2" } ], "changes": [ { "year": 1980, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−3 in summer." }, { "year": 1981, "date": null, "description": "Standard time moved from UTC−4 to UTC−3, a shift of 1 hour." }, { "year": 1981, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." }, { "year": 1987, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−2 in summer." } ] }, { "zone": "America/Monterrey", "standardOffset": "UTC−6", "standardOffsetMinutes": -360, "observesDst": false, "dstAdoptedIn": 1996, "dstAbolishedIn": 2023, "unchangedSince": 2023, "eras": [ { "from": 1970, "to": 1987, "clocksMove": false, "standardOffset": "UTC−6", "summerOffset": null }, { "from": 1988, "to": 1988, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" }, { "from": 1989, "to": 1995, "clocksMove": false, "standardOffset": "UTC−6", "summerOffset": null }, { "from": 1996, "to": 2022, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" }, { "from": 2023, "to": 2027, "clocksMove": false, "standardOffset": "UTC−6", "summerOffset": null } ], "changes": [ { "year": 1988, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−5 in summer." }, { "year": 1989, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−6 became the year-round time." }, { "year": 1996, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−5 in summer." }, { "year": 2023, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−6 became the year-round time." } ] }, { "zone": "America/Montevideo", "standardOffset": "UTC−3", "standardOffsetMinutes": -180, "observesDst": false, "dstAdoptedIn": 2005, "dstAbolishedIn": 2016, "unchangedSince": 2016, "eras": [ { "from": 1970, "to": 1971, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 1972, "to": 1972, "clocksMove": true, "standardOffset": "UTC−3", "summerOffset": "UTC−2" }, { "from": 1973, "to": 1973, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 1974, "to": 1974, "clocksMove": true, "standardOffset": "UTC−2:30", "summerOffset": "UTC−1:30" }, { "from": 1975, "to": 1975, "clocksMove": true, "standardOffset": "UTC−3", "summerOffset": "UTC−2" }, { "from": 1976, "to": 1976, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 1977, "to": 1978, "clocksMove": true, "standardOffset": "UTC−3", "summerOffset": "UTC−2" }, { "from": 1979, "to": 1979, "clocksMove": false, "standardOffset": "UTC−2", "summerOffset": null }, { "from": 1980, "to": 1980, "clocksMove": true, "standardOffset": "UTC−3", "summerOffset": "UTC−2" }, { "from": 1981, "to": 1987, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 1988, "to": 1993, "clocksMove": true, "standardOffset": "UTC−3", "summerOffset": "UTC−2" }, { "from": 1994, "to": 2004, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 2005, "to": 2015, "clocksMove": true, "standardOffset": "UTC−3", "summerOffset": "UTC−2" }, { "from": 2016, "to": 2027, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null } ], "changes": [ { "year": 1972, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−2 in summer." }, { "year": 1973, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." }, { "year": 1974, "date": "1974-01-13", "description": "Standard time moved from UTC−3 to UTC−2:30, a shift of 30 minutes." }, { "year": 1974, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−1:30 in summer." }, { "year": 1975, "date": "1974-12-22", "description": "Standard time moved from UTC−2:30 to UTC−3, a shift of 30 minutes." }, { "year": 1976, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." }, { "year": 1977, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−2 in summer." }, { "year": 1979, "date": "1978-12-17", "description": "Standard time moved from UTC−3 to UTC−2, a shift of 1 hour." }, { "year": 1979, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−2 became the year-round time." }, { "year": 1980, "date": "1980-03-16", "description": "Standard time moved from UTC−2 to UTC−3, a shift of 1 hour." }, { "year": 1980, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−2 in summer." }, { "year": 1981, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." }, { "year": 1988, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−2 in summer." }, { "year": 1994, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." }, { "year": 2005, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−2 in summer." }, { "year": 2016, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." } ] }, { "zone": "America/New_York", "standardOffset": "UTC−5", "standardOffsetMinutes": -300, "observesDst": true, "dstAdoptedIn": 1975, "dstAbolishedIn": null, "unchangedSince": 1975, "eras": [ { "from": 1970, "to": 1973, "clocksMove": true, "standardOffset": "UTC−5", "summerOffset": "UTC−4" }, { "from": 1974, "to": 1974, "clocksMove": false, "standardOffset": "UTC−4", "summerOffset": null }, { "from": 1975, "to": 2027, "clocksMove": true, "standardOffset": "UTC−5", "summerOffset": "UTC−4" } ], "changes": [ { "year": 1974, "date": "1973-10-28", "description": "Standard time moved from UTC−5 to UTC−4, a shift of 1 hour." }, { "year": 1974, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−4 became the year-round time." }, { "year": 1975, "date": "1974-10-27", "description": "Standard time moved from UTC−4 to UTC−5, a shift of 1 hour." }, { "year": 1975, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−4 in summer." } ] }, { "zone": "America/Nome", "standardOffset": "UTC−9", "standardOffsetMinutes": -540, "observesDst": true, "dstAdoptedIn": 1975, "dstAbolishedIn": null, "unchangedSince": 1984, "eras": [ { "from": 1970, "to": 1973, "clocksMove": true, "standardOffset": "UTC−11", "summerOffset": "UTC−10" }, { "from": 1974, "to": 1974, "clocksMove": false, "standardOffset": "UTC−10", "summerOffset": null }, { "from": 1975, "to": 1983, "clocksMove": true, "standardOffset": "UTC−11", "summerOffset": "UTC−10" }, { "from": 1984, "to": 2027, "clocksMove": true, "standardOffset": "UTC−9", "summerOffset": "UTC−8" } ], "changes": [ { "year": 1974, "date": "1973-10-28", "description": "Standard time moved from UTC−11 to UTC−10, a shift of 1 hour." }, { "year": 1974, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−10 became the year-round time." }, { "year": 1975, "date": "1974-10-27", "description": "Standard time moved from UTC−10 to UTC−11, a shift of 1 hour." }, { "year": 1975, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−10 in summer." }, { "year": 1984, "date": "1983-10-30", "description": "Standard time moved from UTC−11 to UTC−9, a shift of 2 hours." } ] }, { "zone": "America/North_Dakota/Beulah", "standardOffset": "UTC−6", "standardOffsetMinutes": -360, "observesDst": true, "dstAdoptedIn": 1975, "dstAbolishedIn": null, "unchangedSince": 2011, "eras": [ { "from": 1970, "to": 1973, "clocksMove": true, "standardOffset": "UTC−7", "summerOffset": "UTC−6" }, { "from": 1974, "to": 1974, "clocksMove": false, "standardOffset": "UTC−6", "summerOffset": null }, { "from": 1975, "to": 2010, "clocksMove": true, "standardOffset": "UTC−7", "summerOffset": "UTC−6" }, { "from": 2011, "to": 2027, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" } ], "changes": [ { "year": 1974, "date": "1973-10-28", "description": "Standard time moved from UTC−7 to UTC−6, a shift of 1 hour." }, { "year": 1974, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−6 became the year-round time." }, { "year": 1975, "date": "1974-10-27", "description": "Standard time moved from UTC−6 to UTC−7, a shift of 1 hour." }, { "year": 1975, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−6 in summer." }, { "year": 2011, "date": "2011-03-13", "description": "Standard time moved from UTC−7 to UTC−6, a shift of 1 hour." } ] }, { "zone": "America/North_Dakota/Center", "standardOffset": "UTC−6", "standardOffsetMinutes": -360, "observesDst": true, "dstAdoptedIn": 1975, "dstAbolishedIn": null, "unchangedSince": 1993, "eras": [ { "from": 1970, "to": 1973, "clocksMove": true, "standardOffset": "UTC−7", "summerOffset": "UTC−6" }, { "from": 1974, "to": 1974, "clocksMove": false, "standardOffset": "UTC−6", "summerOffset": null }, { "from": 1975, "to": 1992, "clocksMove": true, "standardOffset": "UTC−7", "summerOffset": "UTC−6" }, { "from": 1993, "to": 2027, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" } ], "changes": [ { "year": 1974, "date": "1973-10-28", "description": "Standard time moved from UTC−7 to UTC−6, a shift of 1 hour." }, { "year": 1974, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−6 became the year-round time." }, { "year": 1975, "date": "1974-10-27", "description": "Standard time moved from UTC−6 to UTC−7, a shift of 1 hour." }, { "year": 1975, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−6 in summer." }, { "year": 1993, "date": "1993-04-04", "description": "Standard time moved from UTC−7 to UTC−6, a shift of 1 hour." } ] }, { "zone": "America/North_Dakota/New_Salem", "standardOffset": "UTC−6", "standardOffsetMinutes": -360, "observesDst": true, "dstAdoptedIn": 1975, "dstAbolishedIn": null, "unchangedSince": 2004, "eras": [ { "from": 1970, "to": 1973, "clocksMove": true, "standardOffset": "UTC−7", "summerOffset": "UTC−6" }, { "from": 1974, "to": 1974, "clocksMove": false, "standardOffset": "UTC−6", "summerOffset": null }, { "from": 1975, "to": 2003, "clocksMove": true, "standardOffset": "UTC−7", "summerOffset": "UTC−6" }, { "from": 2004, "to": 2027, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" } ], "changes": [ { "year": 1974, "date": "1973-10-28", "description": "Standard time moved from UTC−7 to UTC−6, a shift of 1 hour." }, { "year": 1974, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−6 became the year-round time." }, { "year": 1975, "date": "1974-10-27", "description": "Standard time moved from UTC−6 to UTC−7, a shift of 1 hour." }, { "year": 1975, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−6 in summer." }, { "year": 2004, "date": "2004-04-04", "description": "Standard time moved from UTC−7 to UTC−6, a shift of 1 hour." } ] }, { "zone": "America/Ojinaga", "standardOffset": "UTC−6", "standardOffsetMinutes": -360, "observesDst": true, "dstAdoptedIn": 1999, "dstAbolishedIn": null, "unchangedSince": 2023, "eras": [ { "from": 1970, "to": 1995, "clocksMove": false, "standardOffset": "UTC−6", "summerOffset": null }, { "from": 1996, "to": 1997, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" }, { "from": 1998, "to": 1998, "clocksMove": false, "standardOffset": "UTC−6", "summerOffset": null }, { "from": 1999, "to": 2022, "clocksMove": true, "standardOffset": "UTC−7", "summerOffset": "UTC−6" }, { "from": 2023, "to": 2027, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" } ], "changes": [ { "year": 1996, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−5 in summer." }, { "year": 1998, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−6 became the year-round time." }, { "year": 1999, "date": "1998-10-25", "description": "Standard time moved from UTC−6 to UTC−7, a shift of 1 hour." }, { "year": 1999, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−6 in summer." }, { "year": 2023, "date": "2023-03-12", "description": "Standard time moved from UTC−7 to UTC−6, a shift of 1 hour." } ] }, { "zone": "America/Paramaribo", "standardOffset": "UTC−3", "standardOffsetMinutes": -180, "observesDst": false, "dstAdoptedIn": null, "dstAbolishedIn": null, "unchangedSince": 1985, "eras": [ { "from": 1970, "to": 1984, "clocksMove": false, "standardOffset": "UTC−3:30", "summerOffset": null }, { "from": 1985, "to": 2027, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null } ], "changes": [ { "year": 1985, "date": "1984-10-01", "description": "Standard time moved from UTC−3:30 to UTC−3, a shift of 30 minutes." } ] }, { "zone": "America/Port-au-Prince", "standardOffset": "UTC−5", "standardOffsetMinutes": -300, "observesDst": true, "dstAdoptedIn": 2017, "dstAbolishedIn": null, "unchangedSince": 2017, "eras": [ { "from": 1970, "to": 1982, "clocksMove": false, "standardOffset": "UTC−5", "summerOffset": null }, { "from": 1983, "to": 1997, "clocksMove": true, "standardOffset": "UTC−5", "summerOffset": "UTC−4" }, { "from": 1998, "to": 2004, "clocksMove": false, "standardOffset": "UTC−5", "summerOffset": null }, { "from": 2005, "to": 2006, "clocksMove": true, "standardOffset": "UTC−5", "summerOffset": "UTC−4" }, { "from": 2007, "to": 2011, "clocksMove": false, "standardOffset": "UTC−5", "summerOffset": null }, { "from": 2012, "to": 2015, "clocksMove": true, "standardOffset": "UTC−5", "summerOffset": "UTC−4" }, { "from": 2016, "to": 2016, "clocksMove": false, "standardOffset": "UTC−5", "summerOffset": null }, { "from": 2017, "to": 2027, "clocksMove": true, "standardOffset": "UTC−5", "summerOffset": "UTC−4" } ], "changes": [ { "year": 1983, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−4 in summer." }, { "year": 1998, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−5 became the year-round time." }, { "year": 2005, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−4 in summer." }, { "year": 2007, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−5 became the year-round time." }, { "year": 2012, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−4 in summer." }, { "year": 2016, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−5 became the year-round time." }, { "year": 2017, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−4 in summer." } ] }, { "zone": "America/Punta_Arenas", "standardOffset": "UTC−3", "standardOffsetMinutes": -180, "observesDst": false, "dstAdoptedIn": 2016, "dstAbolishedIn": 2017, "unchangedSince": 2017, "eras": [ { "from": 1970, "to": 2014, "clocksMove": true, "standardOffset": "UTC−4", "summerOffset": "UTC−3" }, { "from": 2015, "to": 2015, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 2016, "to": 2016, "clocksMove": true, "standardOffset": "UTC−4", "summerOffset": "UTC−3" }, { "from": 2017, "to": 2027, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null } ], "changes": [ { "year": 2015, "date": "2014-09-07", "description": "Standard time moved from UTC−4 to UTC−3, a shift of 1 hour." }, { "year": 2015, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." }, { "year": 2016, "date": "2016-05-15", "description": "Standard time moved from UTC−3 to UTC−4, a shift of 1 hour." }, { "year": 2016, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−3 in summer." }, { "year": 2017, "date": "2016-08-14", "description": "Standard time moved from UTC−4 to UTC−3, a shift of 1 hour." }, { "year": 2017, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." } ] }, { "zone": "America/Rankin_Inlet", "standardOffset": "UTC−6", "standardOffsetMinutes": -360, "observesDst": true, "dstAdoptedIn": 2002, "dstAbolishedIn": null, "unchangedSince": 2002, "eras": [ { "from": 1970, "to": 1971, "clocksMove": false, "standardOffset": "UTC−6", "summerOffset": null }, { "from": 1972, "to": 2000, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" }, { "from": 2001, "to": 2001, "clocksMove": false, "standardOffset": "UTC−5", "summerOffset": null }, { "from": 2002, "to": 2027, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" } ], "changes": [ { "year": 1972, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−5 in summer." }, { "year": 2001, "date": "2001-10-28", "description": "Standard time moved from UTC−6 to UTC−5, a shift of 1 hour." }, { "year": 2001, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−5 became the year-round time." }, { "year": 2002, "date": "2001-10-28", "description": "Standard time moved from UTC−5 to UTC−6, a shift of 1 hour." }, { "year": 2002, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−5 in summer." } ] }, { "zone": "America/Recife", "standardOffset": "UTC−3", "standardOffsetMinutes": -180, "observesDst": false, "dstAdoptedIn": 2002, "dstAbolishedIn": 2003, "unchangedSince": 2003, "eras": [ { "from": 1970, "to": 1985, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 1986, "to": 1990, "clocksMove": true, "standardOffset": "UTC−3", "summerOffset": "UTC−2" }, { "from": 1991, "to": 1999, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 2000, "to": 2000, "clocksMove": true, "standardOffset": "UTC−3", "summerOffset": "UTC−2" }, { "from": 2001, "to": 2001, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 2002, "to": 2002, "clocksMove": true, "standardOffset": "UTC−3", "summerOffset": "UTC−2" }, { "from": 2003, "to": 2027, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null } ], "changes": [ { "year": 1986, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−2 in summer." }, { "year": 1991, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." }, { "year": 2000, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−2 in summer." }, { "year": 2001, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." }, { "year": 2002, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−2 in summer." }, { "year": 2003, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." } ] }, { "zone": "America/Resolute", "standardOffset": "UTC−6", "standardOffsetMinutes": -360, "observesDst": true, "dstAdoptedIn": 2008, "dstAbolishedIn": null, "unchangedSince": 2008, "eras": [ { "from": 1970, "to": 1971, "clocksMove": false, "standardOffset": "UTC−6", "summerOffset": null }, { "from": 1972, "to": 2000, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" }, { "from": 2001, "to": 2001, "clocksMove": false, "standardOffset": "UTC−5", "summerOffset": null }, { "from": 2002, "to": 2006, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" }, { "from": 2007, "to": 2007, "clocksMove": false, "standardOffset": "UTC−5", "summerOffset": null }, { "from": 2008, "to": 2027, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" } ], "changes": [ { "year": 1972, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−5 in summer." }, { "year": 2001, "date": "2001-10-28", "description": "Standard time moved from UTC−6 to UTC−5, a shift of 1 hour." }, { "year": 2001, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−5 became the year-round time." }, { "year": 2002, "date": "2001-10-28", "description": "Standard time moved from UTC−5 to UTC−6, a shift of 1 hour." }, { "year": 2002, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−5 in summer." }, { "year": 2007, "date": "2007-11-04", "description": "Standard time moved from UTC−6 to UTC−5, a shift of 1 hour." }, { "year": 2007, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−5 became the year-round time." }, { "year": 2008, "date": "2007-11-04", "description": "Standard time moved from UTC−5 to UTC−6, a shift of 1 hour." }, { "year": 2008, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−5 in summer." } ] }, { "zone": "America/Rio_Branco", "standardOffset": "UTC−5", "standardOffsetMinutes": -300, "observesDst": false, "dstAdoptedIn": 2008, "dstAbolishedIn": 2009, "unchangedSince": 2014, "eras": [ { "from": 1970, "to": 1985, "clocksMove": false, "standardOffset": "UTC−5", "summerOffset": null }, { "from": 1986, "to": 1988, "clocksMove": true, "standardOffset": "UTC−5", "summerOffset": "UTC−4" }, { "from": 1989, "to": 2007, "clocksMove": false, "standardOffset": "UTC−5", "summerOffset": null }, { "from": 2008, "to": 2008, "clocksMove": true, "standardOffset": "UTC−5", "summerOffset": "UTC−4" }, { "from": 2009, "to": 2013, "clocksMove": false, "standardOffset": "UTC−4", "summerOffset": null }, { "from": 2014, "to": 2027, "clocksMove": false, "standardOffset": "UTC−5", "summerOffset": null } ], "changes": [ { "year": 1986, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−4 in summer." }, { "year": 1989, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−5 became the year-round time." }, { "year": 2008, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−4 in summer." }, { "year": 2009, "date": "2008-06-24", "description": "Standard time moved from UTC−5 to UTC−4, a shift of 1 hour." }, { "year": 2009, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−4 became the year-round time." }, { "year": 2014, "date": "2013-11-10", "description": "Standard time moved from UTC−4 to UTC−5, a shift of 1 hour." } ] }, { "zone": "America/Santarem", "standardOffset": "UTC−3", "standardOffsetMinutes": -180, "observesDst": false, "dstAdoptedIn": 2008, "dstAbolishedIn": 2009, "unchangedSince": 2009, "eras": [ { "from": 1970, "to": 1985, "clocksMove": false, "standardOffset": "UTC−4", "summerOffset": null }, { "from": 1986, "to": 1988, "clocksMove": true, "standardOffset": "UTC−4", "summerOffset": "UTC−3" }, { "from": 1989, "to": 2007, "clocksMove": false, "standardOffset": "UTC−4", "summerOffset": null }, { "from": 2008, "to": 2008, "clocksMove": true, "standardOffset": "UTC−4", "summerOffset": "UTC−3" }, { "from": 2009, "to": 2027, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null } ], "changes": [ { "year": 1986, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−3 in summer." }, { "year": 1989, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−4 became the year-round time." }, { "year": 2008, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−3 in summer." }, { "year": 2009, "date": "2008-06-24", "description": "Standard time moved from UTC−4 to UTC−3, a shift of 1 hour." }, { "year": 2009, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." } ] }, { "zone": "America/Santiago", "standardOffset": "UTC−4", "standardOffsetMinutes": -240, "observesDst": true, "dstAdoptedIn": 2016, "dstAbolishedIn": null, "unchangedSince": 2016, "eras": [ { "from": 1970, "to": 2014, "clocksMove": true, "standardOffset": "UTC−4", "summerOffset": "UTC−3" }, { "from": 2015, "to": 2015, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 2016, "to": 2027, "clocksMove": true, "standardOffset": "UTC−4", "summerOffset": "UTC−3" } ], "changes": [ { "year": 2015, "date": "2014-09-07", "description": "Standard time moved from UTC−4 to UTC−3, a shift of 1 hour." }, { "year": 2015, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." }, { "year": 2016, "date": "2016-05-15", "description": "Standard time moved from UTC−3 to UTC−4, a shift of 1 hour." }, { "year": 2016, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−3 in summer." } ] }, { "zone": "America/Santo_Domingo", "standardOffset": "UTC−4", "standardOffsetMinutes": -240, "observesDst": false, "dstAdoptedIn": null, "dstAbolishedIn": 1975, "unchangedSince": 1975, "eras": [ { "from": 1970, "to": 1974, "clocksMove": true, "standardOffset": "UTC−5", "summerOffset": "UTC−4:30" }, { "from": 1975, "to": 2027, "clocksMove": false, "standardOffset": "UTC−4", "summerOffset": null } ], "changes": [ { "year": 1975, "date": "1974-10-27", "description": "Standard time moved from UTC−5 to UTC−4, a shift of 1 hour." }, { "year": 1975, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−4 became the year-round time." } ] }, { "zone": "America/Sao_Paulo", "standardOffset": "UTC−3", "standardOffsetMinutes": -180, "observesDst": false, "dstAdoptedIn": 1986, "dstAbolishedIn": 2020, "unchangedSince": 2020, "eras": [ { "from": 1970, "to": 1985, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 1986, "to": 2019, "clocksMove": true, "standardOffset": "UTC−3", "summerOffset": "UTC−2" }, { "from": 2020, "to": 2027, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null } ], "changes": [ { "year": 1986, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−2 in summer." }, { "year": 2020, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." } ] }, { "zone": "America/Scoresbysund", "standardOffset": "UTC−2", "standardOffsetMinutes": -120, "observesDst": true, "dstAdoptedIn": 2025, "dstAbolishedIn": null, "unchangedSince": 2025, "eras": [ { "from": 1970, "to": 1979, "clocksMove": false, "standardOffset": "UTC−2", "summerOffset": null }, { "from": 1980, "to": 1981, "clocksMove": true, "standardOffset": "UTC−2", "summerOffset": "UTC−1" }, { "from": 1982, "to": 2023, "clocksMove": true, "standardOffset": "UTC−1", "summerOffset": "UTC+0" }, { "from": 2024, "to": 2024, "clocksMove": false, "standardOffset": "UTC−1", "summerOffset": null }, { "from": 2025, "to": 2027, "clocksMove": true, "standardOffset": "UTC−2", "summerOffset": "UTC−1" } ], "changes": [ { "year": 1980, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−1 in summer." }, { "year": 1982, "date": "1981-09-27", "description": "Standard time moved from UTC−2 to UTC−1, a shift of 1 hour." }, { "year": 2024, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−1 became the year-round time." }, { "year": 2025, "date": "2024-10-27", "description": "Standard time moved from UTC−1 to UTC−2, a shift of 1 hour." }, { "year": 2025, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−1 in summer." } ] }, { "zone": "America/Sitka", "standardOffset": "UTC−9", "standardOffsetMinutes": -540, "observesDst": true, "dstAdoptedIn": 1975, "dstAbolishedIn": null, "unchangedSince": 1984, "eras": [ { "from": 1970, "to": 1973, "clocksMove": true, "standardOffset": "UTC−8", "summerOffset": "UTC−7" }, { "from": 1974, "to": 1974, "clocksMove": false, "standardOffset": "UTC−7", "summerOffset": null }, { "from": 1975, "to": 1983, "clocksMove": true, "standardOffset": "UTC−8", "summerOffset": "UTC−7" }, { "from": 1984, "to": 2027, "clocksMove": true, "standardOffset": "UTC−9", "summerOffset": "UTC−8" } ], "changes": [ { "year": 1974, "date": "1973-10-28", "description": "Standard time moved from UTC−8 to UTC−7, a shift of 1 hour." }, { "year": 1974, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−7 became the year-round time." }, { "year": 1975, "date": "1974-10-27", "description": "Standard time moved from UTC−7 to UTC−8, a shift of 1 hour." }, { "year": 1975, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−7 in summer." }, { "year": 1984, "date": "1983-10-30", "description": "Standard time moved from UTC−8 to UTC−9, a shift of 1 hour." } ] }, { "zone": "America/Swift_Current", "standardOffset": "UTC−6", "standardOffsetMinutes": -360, "observesDst": false, "dstAdoptedIn": 1972, "dstAbolishedIn": 1973, "unchangedSince": 1973, "eras": [ { "from": 1970, "to": 1971, "clocksMove": false, "standardOffset": "UTC−7", "summerOffset": null }, { "from": 1972, "to": 1972, "clocksMove": true, "standardOffset": "UTC−7", "summerOffset": "UTC−6" }, { "from": 1973, "to": 2027, "clocksMove": false, "standardOffset": "UTC−6", "summerOffset": null } ], "changes": [ { "year": 1972, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−6 in summer." }, { "year": 1973, "date": null, "description": "Standard time moved from UTC−7 to UTC−6, a shift of 1 hour." }, { "year": 1973, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−6 became the year-round time." } ] }, { "zone": "America/Tegucigalpa", "standardOffset": "UTC−6", "standardOffsetMinutes": -360, "observesDst": false, "dstAdoptedIn": 2006, "dstAbolishedIn": 2007, "unchangedSince": 2007, "eras": [ { "from": 1970, "to": 1986, "clocksMove": false, "standardOffset": "UTC−6", "summerOffset": null }, { "from": 1987, "to": 1988, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" }, { "from": 1989, "to": 2005, "clocksMove": false, "standardOffset": "UTC−6", "summerOffset": null }, { "from": 2006, "to": 2006, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" }, { "from": 2007, "to": 2027, "clocksMove": false, "standardOffset": "UTC−6", "summerOffset": null } ], "changes": [ { "year": 1987, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−5 in summer." }, { "year": 1989, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−6 became the year-round time." }, { "year": 2006, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−5 in summer." }, { "year": 2007, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−6 became the year-round time." } ] }, { "zone": "America/Tijuana", "standardOffset": "UTC−8", "standardOffsetMinutes": -480, "observesDst": true, "dstAdoptedIn": 1975, "dstAbolishedIn": null, "unchangedSince": 1975, "eras": [ { "from": 1970, "to": 1973, "clocksMove": true, "standardOffset": "UTC−8", "summerOffset": "UTC−7" }, { "from": 1974, "to": 1974, "clocksMove": false, "standardOffset": "UTC−7", "summerOffset": null }, { "from": 1975, "to": 2027, "clocksMove": true, "standardOffset": "UTC−8", "summerOffset": "UTC−7" } ], "changes": [ { "year": 1974, "date": "1973-10-28", "description": "Standard time moved from UTC−8 to UTC−7, a shift of 1 hour." }, { "year": 1974, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−7 became the year-round time." }, { "year": 1975, "date": "1974-10-27", "description": "Standard time moved from UTC−7 to UTC−8, a shift of 1 hour." }, { "year": 1975, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−7 in summer." } ] }, { "zone": "America/Whitehorse", "standardOffset": "UTC−7", "standardOffsetMinutes": -420, "observesDst": false, "dstAdoptedIn": 1980, "dstAbolishedIn": 2021, "unchangedSince": 2021, "eras": [ { "from": 1970, "to": 1979, "clocksMove": false, "standardOffset": "UTC−8", "summerOffset": null }, { "from": 1980, "to": 2020, "clocksMove": true, "standardOffset": "UTC−8", "summerOffset": "UTC−7" }, { "from": 2021, "to": 2027, "clocksMove": false, "standardOffset": "UTC−7", "summerOffset": null } ], "changes": [ { "year": 1980, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−7 in summer." }, { "year": 2021, "date": null, "description": "Standard time moved from UTC−8 to UTC−7, a shift of 1 hour." }, { "year": 2021, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−7 became the year-round time." } ] }, { "zone": "America/Yakutat", "standardOffset": "UTC−9", "standardOffsetMinutes": -540, "observesDst": true, "dstAdoptedIn": 1975, "dstAbolishedIn": null, "unchangedSince": 1975, "eras": [ { "from": 1970, "to": 1973, "clocksMove": true, "standardOffset": "UTC−9", "summerOffset": "UTC−8" }, { "from": 1974, "to": 1974, "clocksMove": false, "standardOffset": "UTC−8", "summerOffset": null }, { "from": 1975, "to": 2027, "clocksMove": true, "standardOffset": "UTC−9", "summerOffset": "UTC−8" } ], "changes": [ { "year": 1974, "date": "1973-10-28", "description": "Standard time moved from UTC−9 to UTC−8, a shift of 1 hour." }, { "year": 1974, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−8 became the year-round time." }, { "year": 1975, "date": "1974-10-27", "description": "Standard time moved from UTC−8 to UTC−9, a shift of 1 hour." }, { "year": 1975, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−8 in summer." } ] }, { "zone": "Antarctica/Casey", "standardOffset": "UTC+8", "standardOffsetMinutes": 480, "observesDst": false, "dstAdoptedIn": 2018, "dstAbolishedIn": 2024, "unchangedSince": 2024, "eras": [ { "from": 1970, "to": 2009, "clocksMove": false, "standardOffset": "UTC+8", "summerOffset": null }, { "from": 2010, "to": 2010, "clocksMove": true, "standardOffset": "UTC+8", "summerOffset": "UTC+11" }, { "from": 2011, "to": 2011, "clocksMove": false, "standardOffset": "UTC+8", "summerOffset": null }, { "from": 2012, "to": 2012, "clocksMove": true, "standardOffset": "UTC+8", "summerOffset": "UTC+11" }, { "from": 2013, "to": 2016, "clocksMove": false, "standardOffset": "UTC+8", "summerOffset": null }, { "from": 2017, "to": 2017, "clocksMove": false, "standardOffset": "UTC+11", "summerOffset": null }, { "from": 2018, "to": 2023, "clocksMove": true, "standardOffset": "UTC+8", "summerOffset": "UTC+11" }, { "from": 2024, "to": 2027, "clocksMove": false, "standardOffset": "UTC+8", "summerOffset": null } ], "changes": [ { "year": 2010, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+11 in summer." }, { "year": 2011, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+8 became the year-round time." }, { "year": 2012, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+11 in summer." }, { "year": 2013, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+8 became the year-round time." }, { "year": 2017, "date": "2016-10-21", "description": "Standard time moved from UTC+8 to UTC+11, a shift of 3 hours." }, { "year": 2018, "date": "2018-03-10", "description": "Standard time moved from UTC+11 to UTC+8, a shift of 3 hours." }, { "year": 2018, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+11 in summer." }, { "year": 2024, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+8 became the year-round time." } ] }, { "zone": "Antarctica/Davis", "standardOffset": "UTC+7", "standardOffsetMinutes": 420, "observesDst": false, "dstAdoptedIn": 2012, "dstAbolishedIn": 2013, "unchangedSince": 2013, "eras": [ { "from": 1970, "to": 2009, "clocksMove": false, "standardOffset": "UTC+7", "summerOffset": null }, { "from": 2010, "to": 2010, "clocksMove": true, "standardOffset": "UTC+5", "summerOffset": "UTC+7" }, { "from": 2011, "to": 2011, "clocksMove": false, "standardOffset": "UTC+7", "summerOffset": null }, { "from": 2012, "to": 2012, "clocksMove": true, "standardOffset": "UTC+5", "summerOffset": "UTC+7" }, { "from": 2013, "to": 2027, "clocksMove": false, "standardOffset": "UTC+7", "summerOffset": null } ], "changes": [ { "year": 2010, "date": "2009-10-17", "description": "Standard time moved from UTC+7 to UTC+5, a shift of 2 hours." }, { "year": 2010, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+7 in summer." }, { "year": 2011, "date": "2011-10-27", "description": "Standard time moved from UTC+5 to UTC+7, a shift of 2 hours." }, { "year": 2011, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+7 became the year-round time." }, { "year": 2012, "date": "2011-10-27", "description": "Standard time moved from UTC+7 to UTC+5, a shift of 2 hours." }, { "year": 2012, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+7 in summer." }, { "year": 2013, "date": null, "description": "Standard time moved from UTC+5 to UTC+7, a shift of 2 hours." }, { "year": 2013, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+7 became the year-round time." } ] }, { "zone": "Antarctica/Macquarie", "standardOffset": "UTC+10", "standardOffsetMinutes": 600, "observesDst": true, "dstAdoptedIn": 2011, "dstAbolishedIn": null, "unchangedSince": 2011, "eras": [ { "from": 1970, "to": 2009, "clocksMove": true, "standardOffset": "UTC+10", "summerOffset": "UTC+11" }, { "from": 2010, "to": 2010, "clocksMove": false, "standardOffset": "UTC+11", "summerOffset": null }, { "from": 2011, "to": 2027, "clocksMove": true, "standardOffset": "UTC+10", "summerOffset": "UTC+11" } ], "changes": [ { "year": 2010, "date": "2009-10-03", "description": "Standard time moved from UTC+10 to UTC+11, a shift of 1 hour." }, { "year": 2010, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+11 became the year-round time." }, { "year": 2011, "date": "2011-04-02", "description": "Standard time moved from UTC+11 to UTC+10, a shift of 1 hour." }, { "year": 2011, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+11 in summer." } ] }, { "zone": "Antarctica/Mawson", "standardOffset": "UTC+5", "standardOffsetMinutes": 300, "observesDst": false, "dstAdoptedIn": null, "dstAbolishedIn": null, "unchangedSince": 2010, "eras": [ { "from": 1970, "to": 2009, "clocksMove": false, "standardOffset": "UTC+6", "summerOffset": null }, { "from": 2010, "to": 2027, "clocksMove": false, "standardOffset": "UTC+5", "summerOffset": null } ], "changes": [ { "year": 2010, "date": "2009-10-17", "description": "Standard time moved from UTC+6 to UTC+5, a shift of 1 hour." } ] }, { "zone": "Antarctica/Palmer", "standardOffset": "UTC−3", "standardOffsetMinutes": -180, "observesDst": false, "dstAdoptedIn": 2016, "dstAbolishedIn": 2017, "unchangedSince": 2017, "eras": [ { "from": 1970, "to": 1981, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 1982, "to": 2014, "clocksMove": true, "standardOffset": "UTC−4", "summerOffset": "UTC−3" }, { "from": 2015, "to": 2015, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null }, { "from": 2016, "to": 2016, "clocksMove": true, "standardOffset": "UTC−4", "summerOffset": "UTC−3" }, { "from": 2017, "to": 2027, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null } ], "changes": [ { "year": 1982, "date": "1982-05-01", "description": "Standard time moved from UTC−3 to UTC−4, a shift of 1 hour." }, { "year": 1982, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−3 in summer." }, { "year": 2015, "date": "2014-09-07", "description": "Standard time moved from UTC−4 to UTC−3, a shift of 1 hour." }, { "year": 2015, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." }, { "year": 2016, "date": "2016-05-15", "description": "Standard time moved from UTC−3 to UTC−4, a shift of 1 hour." }, { "year": 2016, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−3 in summer." }, { "year": 2017, "date": "2016-08-14", "description": "Standard time moved from UTC−4 to UTC−3, a shift of 1 hour." }, { "year": 2017, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." } ] }, { "zone": "Antarctica/Rothera", "standardOffset": "UTC−3", "standardOffsetMinutes": -180, "observesDst": false, "dstAdoptedIn": null, "dstAbolishedIn": null, "unchangedSince": 1977, "eras": [ { "from": 1970, "to": 1976, "clocksMove": false, "standardOffset": "UTC+0", "summerOffset": null }, { "from": 1977, "to": 2027, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null } ], "changes": [ { "year": 1977, "date": "1976-12-01", "description": "Standard time moved from UTC+0 to UTC−3, a shift of 3 hours." } ] }, { "zone": "Antarctica/Vostok", "standardOffset": "UTC+5", "standardOffsetMinutes": 300, "observesDst": false, "dstAdoptedIn": 1994, "dstAbolishedIn": 1995, "unchangedSince": 2024, "eras": [ { "from": 1970, "to": 1993, "clocksMove": false, "standardOffset": "UTC+7", "summerOffset": null }, { "from": 1994, "to": 1994, "clocksMove": true, "standardOffset": "UTC+0", "summerOffset": "UTC+7" }, { "from": 1995, "to": 2023, "clocksMove": false, "standardOffset": "UTC+7", "summerOffset": null }, { "from": 2024, "to": 2027, "clocksMove": false, "standardOffset": "UTC+5", "summerOffset": null } ], "changes": [ { "year": 1994, "date": "1994-01-31", "description": "Standard time moved from UTC+7 to UTC+0, a shift of 7 hours." }, { "year": 1994, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+7 in summer." }, { "year": 1995, "date": "1994-11-01", "description": "Standard time moved from UTC+0 to UTC+7, a shift of 7 hours." }, { "year": 1995, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+7 became the year-round time." }, { "year": 2024, "date": "2023-12-17", "description": "Standard time moved from UTC+7 to UTC+5, a shift of 2 hours." } ] }, { "zone": "Asia/Almaty", "standardOffset": "UTC+5", "standardOffsetMinutes": 300, "observesDst": false, "dstAdoptedIn": 2024, "dstAbolishedIn": 2025, "unchangedSince": 2025, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+6", "summerOffset": null }, { "from": 1981, "to": 1990, "clocksMove": true, "standardOffset": "UTC+6", "summerOffset": "UTC+7" }, { "from": 1991, "to": 1991, "clocksMove": false, "standardOffset": "UTC+6", "summerOffset": null }, { "from": 1992, "to": 1992, "clocksMove": true, "standardOffset": "UTC+5", "summerOffset": "UTC+7" }, { "from": 1993, "to": 2004, "clocksMove": true, "standardOffset": "UTC+6", "summerOffset": "UTC+7" }, { "from": 2005, "to": 2023, "clocksMove": false, "standardOffset": "UTC+6", "summerOffset": null }, { "from": 2024, "to": 2024, "clocksMove": true, "standardOffset": "UTC+5", "summerOffset": "UTC+6" }, { "from": 2025, "to": 2027, "clocksMove": false, "standardOffset": "UTC+5", "summerOffset": null } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+7 in summer." }, { "year": 1991, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+6 became the year-round time." }, { "year": 1992, "date": "1991-09-28", "description": "Standard time moved from UTC+6 to UTC+5, a shift of 1 hour." }, { "year": 1992, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+7 in summer." }, { "year": 1993, "date": "1992-09-26", "description": "Standard time moved from UTC+5 to UTC+6, a shift of 1 hour." }, { "year": 2005, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+6 became the year-round time." }, { "year": 2024, "date": "2024-02-29", "description": "Standard time moved from UTC+6 to UTC+5, a shift of 1 hour." }, { "year": 2024, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+6 in summer." }, { "year": 2025, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+5 became the year-round time." } ] }, { "zone": "Asia/Amman", "standardOffset": "UTC+3", "standardOffsetMinutes": 180, "observesDst": false, "dstAdoptedIn": 2014, "dstAbolishedIn": 2023, "unchangedSince": 2023, "eras": [ { "from": 1970, "to": 1972, "clocksMove": false, "standardOffset": "UTC+2", "summerOffset": null }, { "from": 1973, "to": 1978, "clocksMove": true, "standardOffset": "UTC+2", "summerOffset": "UTC+3" }, { "from": 1979, "to": 1984, "clocksMove": false, "standardOffset": "UTC+2", "summerOffset": null }, { "from": 1985, "to": 2012, "clocksMove": true, "standardOffset": "UTC+2", "summerOffset": "UTC+3" }, { "from": 2013, "to": 2013, "clocksMove": false, "standardOffset": "UTC+3", "summerOffset": null }, { "from": 2014, "to": 2022, "clocksMove": true, "standardOffset": "UTC+2", "summerOffset": "UTC+3" }, { "from": 2023, "to": 2027, "clocksMove": false, "standardOffset": "UTC+3", "summerOffset": null } ], "changes": [ { "year": 1973, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+3 in summer." }, { "year": 1979, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+2 became the year-round time." }, { "year": 1985, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+3 in summer." }, { "year": 2013, "date": "2013-12-19", "description": "Standard time moved from UTC+2 to UTC+3, a shift of 1 hour." }, { "year": 2013, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+3 became the year-round time." }, { "year": 2014, "date": "2013-12-19", "description": "Standard time moved from UTC+3 to UTC+2, a shift of 1 hour." }, { "year": 2014, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+3 in summer." }, { "year": 2023, "date": null, "description": "Standard time moved from UTC+2 to UTC+3, a shift of 1 hour." }, { "year": 2023, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+3 became the year-round time." } ] }, { "zone": "Asia/Anadyr", "standardOffset": "UTC+12", "standardOffsetMinutes": 720, "observesDst": false, "dstAdoptedIn": 2011, "dstAbolishedIn": 2012, "unchangedSince": 2012, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+13", "summerOffset": null }, { "from": 1981, "to": 1981, "clocksMove": true, "standardOffset": "UTC+13", "summerOffset": "UTC+14" }, { "from": 1982, "to": 1982, "clocksMove": false, "standardOffset": "UTC+13", "summerOffset": null }, { "from": 1983, "to": 1990, "clocksMove": true, "standardOffset": "UTC+12", "summerOffset": "UTC+13" }, { "from": 1991, "to": 1991, "clocksMove": false, "standardOffset": "UTC+12", "summerOffset": null }, { "from": 1992, "to": 1992, "clocksMove": true, "standardOffset": "UTC+11", "summerOffset": "UTC+13" }, { "from": 1993, "to": 2009, "clocksMove": true, "standardOffset": "UTC+12", "summerOffset": "UTC+13" }, { "from": 2010, "to": 2010, "clocksMove": false, "standardOffset": "UTC+12", "summerOffset": null }, { "from": 2011, "to": 2011, "clocksMove": true, "standardOffset": "UTC+11", "summerOffset": "UTC+12" }, { "from": 2012, "to": 2027, "clocksMove": false, "standardOffset": "UTC+12", "summerOffset": null } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+14 in summer." }, { "year": 1982, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+13 became the year-round time." }, { "year": 1983, "date": "1982-09-30", "description": "Standard time moved from UTC+13 to UTC+12, a shift of 1 hour." }, { "year": 1983, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+13 in summer." }, { "year": 1991, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+12 became the year-round time." }, { "year": 1992, "date": "1991-09-28", "description": "Standard time moved from UTC+12 to UTC+11, a shift of 1 hour." }, { "year": 1992, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+13 in summer." }, { "year": 1993, "date": "1992-09-26", "description": "Standard time moved from UTC+11 to UTC+12, a shift of 1 hour." }, { "year": 2010, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+12 became the year-round time." }, { "year": 2011, "date": "2010-10-30", "description": "Standard time moved from UTC+12 to UTC+11, a shift of 1 hour." }, { "year": 2011, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+12 in summer." }, { "year": 2012, "date": null, "description": "Standard time moved from UTC+11 to UTC+12, a shift of 1 hour." }, { "year": 2012, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+12 became the year-round time." } ] }, { "zone": "Asia/Aqtau", "standardOffset": "UTC+5", "standardOffsetMinutes": 300, "observesDst": false, "dstAdoptedIn": 1992, "dstAbolishedIn": 2005, "unchangedSince": 2005, "eras": [ { "from": 1970, "to": 1981, "clocksMove": false, "standardOffset": "UTC+5", "summerOffset": null }, { "from": 1982, "to": 1982, "clocksMove": false, "standardOffset": "UTC+6", "summerOffset": null }, { "from": 1983, "to": 1990, "clocksMove": true, "standardOffset": "UTC+5", "summerOffset": "UTC+6" }, { "from": 1991, "to": 1991, "clocksMove": false, "standardOffset": "UTC+5", "summerOffset": null }, { "from": 1992, "to": 1992, "clocksMove": true, "standardOffset": "UTC+4", "summerOffset": "UTC+6" }, { "from": 1993, "to": 1994, "clocksMove": true, "standardOffset": "UTC+5", "summerOffset": "UTC+6" }, { "from": 1995, "to": 2004, "clocksMove": true, "standardOffset": "UTC+4", "summerOffset": "UTC+5" }, { "from": 2005, "to": 2027, "clocksMove": false, "standardOffset": "UTC+5", "summerOffset": null } ], "changes": [ { "year": 1982, "date": "1981-09-30", "description": "Standard time moved from UTC+5 to UTC+6, a shift of 1 hour." }, { "year": 1983, "date": "1982-09-30", "description": "Standard time moved from UTC+6 to UTC+5, a shift of 1 hour." }, { "year": 1983, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+6 in summer." }, { "year": 1991, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+5 became the year-round time." }, { "year": 1992, "date": "1991-09-28", "description": "Standard time moved from UTC+5 to UTC+4, a shift of 1 hour." }, { "year": 1992, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+6 in summer." }, { "year": 1993, "date": "1992-09-26", "description": "Standard time moved from UTC+4 to UTC+5, a shift of 1 hour." }, { "year": 1995, "date": "1994-09-24", "description": "Standard time moved from UTC+5 to UTC+4, a shift of 1 hour." }, { "year": 2005, "date": null, "description": "Standard time moved from UTC+4 to UTC+5, a shift of 1 hour." }, { "year": 2005, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+5 became the year-round time." } ] }, { "zone": "Asia/Aqtobe", "standardOffset": "UTC+5", "standardOffsetMinutes": 300, "observesDst": false, "dstAdoptedIn": 1992, "dstAbolishedIn": 2005, "unchangedSince": 2005, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+5", "summerOffset": null }, { "from": 1981, "to": 1981, "clocksMove": true, "standardOffset": "UTC+5", "summerOffset": "UTC+6" }, { "from": 1982, "to": 1982, "clocksMove": false, "standardOffset": "UTC+6", "summerOffset": null }, { "from": 1983, "to": 1990, "clocksMove": true, "standardOffset": "UTC+5", "summerOffset": "UTC+6" }, { "from": 1991, "to": 1991, "clocksMove": false, "standardOffset": "UTC+5", "summerOffset": null }, { "from": 1992, "to": 1992, "clocksMove": true, "standardOffset": "UTC+4", "summerOffset": "UTC+6" }, { "from": 1993, "to": 2004, "clocksMove": true, "standardOffset": "UTC+5", "summerOffset": "UTC+6" }, { "from": 2005, "to": 2027, "clocksMove": false, "standardOffset": "UTC+5", "summerOffset": null } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+6 in summer." }, { "year": 1982, "date": "1982-09-30", "description": "Standard time moved from UTC+5 to UTC+6, a shift of 1 hour." }, { "year": 1982, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+6 became the year-round time." }, { "year": 1983, "date": "1982-09-30", "description": "Standard time moved from UTC+6 to UTC+5, a shift of 1 hour." }, { "year": 1983, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+6 in summer." }, { "year": 1991, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+5 became the year-round time." }, { "year": 1992, "date": "1991-09-28", "description": "Standard time moved from UTC+5 to UTC+4, a shift of 1 hour." }, { "year": 1992, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+6 in summer." }, { "year": 1993, "date": "1992-09-26", "description": "Standard time moved from UTC+4 to UTC+5, a shift of 1 hour." }, { "year": 2005, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+5 became the year-round time." } ] }, { "zone": "Asia/Ashgabat", "standardOffset": "UTC+5", "standardOffsetMinutes": 300, "observesDst": false, "dstAdoptedIn": 1992, "dstAbolishedIn": 1993, "unchangedSince": 1993, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+5", "summerOffset": null }, { "from": 1981, "to": 1990, "clocksMove": true, "standardOffset": "UTC+5", "summerOffset": "UTC+6" }, { "from": 1991, "to": 1991, "clocksMove": false, "standardOffset": "UTC+5", "summerOffset": null }, { "from": 1992, "to": 1992, "clocksMove": true, "standardOffset": "UTC+4", "summerOffset": "UTC+5" }, { "from": 1993, "to": 2027, "clocksMove": false, "standardOffset": "UTC+5", "summerOffset": null } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+6 in summer." }, { "year": 1991, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+5 became the year-round time." }, { "year": 1992, "date": "1991-09-28", "description": "Standard time moved from UTC+5 to UTC+4, a shift of 1 hour." }, { "year": 1992, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+5 in summer." }, { "year": 1993, "date": null, "description": "Standard time moved from UTC+4 to UTC+5, a shift of 1 hour." }, { "year": 1993, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+5 became the year-round time." } ] }, { "zone": "Asia/Atyrau", "standardOffset": "UTC+5", "standardOffsetMinutes": 300, "observesDst": false, "dstAdoptedIn": 2000, "dstAbolishedIn": 2005, "unchangedSince": 2005, "eras": [ { "from": 1970, "to": 1981, "clocksMove": false, "standardOffset": "UTC+5", "summerOffset": null }, { "from": 1982, "to": 1982, "clocksMove": false, "standardOffset": "UTC+6", "summerOffset": null }, { "from": 1983, "to": 1990, "clocksMove": true, "standardOffset": "UTC+5", "summerOffset": "UTC+6" }, { "from": 1991, "to": 1991, "clocksMove": false, "standardOffset": "UTC+5", "summerOffset": null }, { "from": 1992, "to": 1992, "clocksMove": true, "standardOffset": "UTC+4", "summerOffset": "UTC+6" }, { "from": 1993, "to": 1998, "clocksMove": true, "standardOffset": "UTC+5", "summerOffset": "UTC+6" }, { "from": 1999, "to": 1999, "clocksMove": false, "standardOffset": "UTC+5", "summerOffset": null }, { "from": 2000, "to": 2004, "clocksMove": true, "standardOffset": "UTC+4", "summerOffset": "UTC+5" }, { "from": 2005, "to": 2027, "clocksMove": false, "standardOffset": "UTC+5", "summerOffset": null } ], "changes": [ { "year": 1982, "date": "1981-09-30", "description": "Standard time moved from UTC+5 to UTC+6, a shift of 1 hour." }, { "year": 1983, "date": "1982-09-30", "description": "Standard time moved from UTC+6 to UTC+5, a shift of 1 hour." }, { "year": 1983, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+6 in summer." }, { "year": 1991, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+5 became the year-round time." }, { "year": 1992, "date": "1991-09-28", "description": "Standard time moved from UTC+5 to UTC+4, a shift of 1 hour." }, { "year": 1992, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+6 in summer." }, { "year": 1993, "date": "1992-09-26", "description": "Standard time moved from UTC+4 to UTC+5, a shift of 1 hour." }, { "year": 1999, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+5 became the year-round time." }, { "year": 2000, "date": "1999-10-30", "description": "Standard time moved from UTC+5 to UTC+4, a shift of 1 hour." }, { "year": 2000, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+5 in summer." }, { "year": 2005, "date": null, "description": "Standard time moved from UTC+4 to UTC+5, a shift of 1 hour." }, { "year": 2005, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+5 became the year-round time." } ] }, { "zone": "Asia/Baghdad", "standardOffset": "UTC+3", "standardOffsetMinutes": 180, "observesDst": false, "dstAdoptedIn": 1982, "dstAbolishedIn": 2008, "unchangedSince": 2008, "eras": [ { "from": 1970, "to": 1981, "clocksMove": false, "standardOffset": "UTC+3", "summerOffset": null }, { "from": 1982, "to": 2007, "clocksMove": true, "standardOffset": "UTC+3", "summerOffset": "UTC+4" }, { "from": 2008, "to": 2027, "clocksMove": false, "standardOffset": "UTC+3", "summerOffset": null } ], "changes": [ { "year": 1982, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+4 in summer." }, { "year": 2008, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+3 became the year-round time." } ] }, { "zone": "Asia/Bahrain", "standardOffset": "UTC+3", "standardOffsetMinutes": 180, "observesDst": false, "dstAdoptedIn": 1972, "dstAbolishedIn": 1973, "unchangedSince": 1973, "eras": [ { "from": 1970, "to": 1971, "clocksMove": false, "standardOffset": "UTC+4", "summerOffset": null }, { "from": 1972, "to": 1972, "clocksMove": true, "standardOffset": "UTC+3", "summerOffset": "UTC+4" }, { "from": 1973, "to": 2027, "clocksMove": false, "standardOffset": "UTC+3", "summerOffset": null } ], "changes": [ { "year": 1972, "date": "1972-05-31", "description": "Standard time moved from UTC+4 to UTC+3, a shift of 1 hour." }, { "year": 1972, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+4 in summer." }, { "year": 1973, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+3 became the year-round time." } ] }, { "zone": "Asia/Baku", "standardOffset": "UTC+4", "standardOffsetMinutes": 240, "observesDst": false, "dstAdoptedIn": 1996, "dstAbolishedIn": 2016, "unchangedSince": 2016, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+4", "summerOffset": null }, { "from": 1981, "to": 1990, "clocksMove": true, "standardOffset": "UTC+4", "summerOffset": "UTC+5" }, { "from": 1991, "to": 1991, "clocksMove": false, "standardOffset": "UTC+4", "summerOffset": null }, { "from": 1992, "to": 1992, "clocksMove": true, "standardOffset": "UTC+3", "summerOffset": "UTC+4" }, { "from": 1993, "to": 1995, "clocksMove": false, "standardOffset": "UTC+4", "summerOffset": null }, { "from": 1996, "to": 2015, "clocksMove": true, "standardOffset": "UTC+4", "summerOffset": "UTC+5" }, { "from": 2016, "to": 2027, "clocksMove": false, "standardOffset": "UTC+4", "summerOffset": null } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+5 in summer." }, { "year": 1991, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+4 became the year-round time." }, { "year": 1992, "date": "1991-09-28", "description": "Standard time moved from UTC+4 to UTC+3, a shift of 1 hour." }, { "year": 1992, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+4 in summer." }, { "year": 1993, "date": null, "description": "Standard time moved from UTC+3 to UTC+4, a shift of 1 hour." }, { "year": 1993, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+4 became the year-round time." }, { "year": 1996, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+5 in summer." }, { "year": 2016, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+4 became the year-round time." } ] }, { "zone": "Asia/Barnaul", "standardOffset": "UTC+7", "standardOffsetMinutes": 420, "observesDst": false, "dstAdoptedIn": 2016, "dstAbolishedIn": 2017, "unchangedSince": 2017, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+7", "summerOffset": null }, { "from": 1981, "to": 1990, "clocksMove": true, "standardOffset": "UTC+7", "summerOffset": "UTC+8" }, { "from": 1991, "to": 1991, "clocksMove": false, "standardOffset": "UTC+7", "summerOffset": null }, { "from": 1992, "to": 1992, "clocksMove": true, "standardOffset": "UTC+6", "summerOffset": "UTC+8" }, { "from": 1993, "to": 1994, "clocksMove": true, "standardOffset": "UTC+7", "summerOffset": "UTC+8" }, { "from": 1995, "to": 1995, "clocksMove": false, "standardOffset": "UTC+7", "summerOffset": null }, { "from": 1996, "to": 2011, "clocksMove": true, "standardOffset": "UTC+6", "summerOffset": "UTC+7" }, { "from": 2012, "to": 2014, "clocksMove": false, "standardOffset": "UTC+7", "summerOffset": null }, { "from": 2015, "to": 2015, "clocksMove": false, "standardOffset": "UTC+6", "summerOffset": null }, { "from": 2016, "to": 2016, "clocksMove": true, "standardOffset": "UTC+6", "summerOffset": "UTC+7" }, { "from": 2017, "to": 2027, "clocksMove": false, "standardOffset": "UTC+7", "summerOffset": null } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+8 in summer." }, { "year": 1991, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+7 became the year-round time." }, { "year": 1992, "date": "1991-09-28", "description": "Standard time moved from UTC+7 to UTC+6, a shift of 1 hour." }, { "year": 1992, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+8 in summer." }, { "year": 1993, "date": "1992-09-26", "description": "Standard time moved from UTC+6 to UTC+7, a shift of 1 hour." }, { "year": 1995, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+7 became the year-round time." }, { "year": 1996, "date": "1995-09-23", "description": "Standard time moved from UTC+7 to UTC+6, a shift of 1 hour." }, { "year": 1996, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+7 in summer." }, { "year": 2012, "date": null, "description": "Standard time moved from UTC+6 to UTC+7, a shift of 1 hour." }, { "year": 2012, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+7 became the year-round time." }, { "year": 2015, "date": "2014-10-25", "description": "Standard time moved from UTC+7 to UTC+6, a shift of 1 hour." }, { "year": 2016, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+7 in summer." }, { "year": 2017, "date": null, "description": "Standard time moved from UTC+6 to UTC+7, a shift of 1 hour." }, { "year": 2017, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+7 became the year-round time." } ] }, { "zone": "Asia/Beirut", "standardOffset": "UTC+2", "standardOffsetMinutes": 120, "observesDst": true, "dstAdoptedIn": 1984, "dstAbolishedIn": null, "unchangedSince": 1984, "eras": [ { "from": 1970, "to": 1971, "clocksMove": false, "standardOffset": "UTC+2", "summerOffset": null }, { "from": 1972, "to": 1978, "clocksMove": true, "standardOffset": "UTC+2", "summerOffset": "UTC+3" }, { "from": 1979, "to": 1983, "clocksMove": false, "standardOffset": "UTC+2", "summerOffset": null }, { "from": 1984, "to": 2027, "clocksMove": true, "standardOffset": "UTC+2", "summerOffset": "UTC+3" } ], "changes": [ { "year": 1972, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+3 in summer." }, { "year": 1979, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+2 became the year-round time." }, { "year": 1984, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+3 in summer." } ] }, { "zone": "Asia/Bishkek", "standardOffset": "UTC+6", "standardOffsetMinutes": 360, "observesDst": false, "dstAdoptedIn": 1992, "dstAbolishedIn": 2006, "unchangedSince": 2006, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+6", "summerOffset": null }, { "from": 1981, "to": 1990, "clocksMove": true, "standardOffset": "UTC+6", "summerOffset": "UTC+7" }, { "from": 1991, "to": 1991, "clocksMove": false, "standardOffset": "UTC+6", "summerOffset": null }, { "from": 1992, "to": 2005, "clocksMove": true, "standardOffset": "UTC+5", "summerOffset": "UTC+6" }, { "from": 2006, "to": 2027, "clocksMove": false, "standardOffset": "UTC+6", "summerOffset": null } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+7 in summer." }, { "year": 1991, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+6 became the year-round time." }, { "year": 1992, "date": "1991-08-30", "description": "Standard time moved from UTC+6 to UTC+5, a shift of 1 hour." }, { "year": 1992, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+6 in summer." }, { "year": 2006, "date": null, "description": "Standard time moved from UTC+5 to UTC+6, a shift of 1 hour." }, { "year": 2006, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+6 became the year-round time." } ] }, { "zone": "Asia/Chita", "standardOffset": "UTC+9", "standardOffsetMinutes": 540, "observesDst": false, "dstAdoptedIn": 2016, "dstAbolishedIn": 2017, "unchangedSince": 2017, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+9", "summerOffset": null }, { "from": 1981, "to": 1990, "clocksMove": true, "standardOffset": "UTC+9", "summerOffset": "UTC+10" }, { "from": 1991, "to": 1991, "clocksMove": false, "standardOffset": "UTC+9", "summerOffset": null }, { "from": 1992, "to": 1992, "clocksMove": true, "standardOffset": "UTC+8", "summerOffset": "UTC+10" }, { "from": 1993, "to": 2011, "clocksMove": true, "standardOffset": "UTC+9", "summerOffset": "UTC+10" }, { "from": 2012, "to": 2014, "clocksMove": false, "standardOffset": "UTC+10", "summerOffset": null }, { "from": 2015, "to": 2015, "clocksMove": false, "standardOffset": "UTC+8", "summerOffset": null }, { "from": 2016, "to": 2016, "clocksMove": true, "standardOffset": "UTC+8", "summerOffset": "UTC+9" }, { "from": 2017, "to": 2027, "clocksMove": false, "standardOffset": "UTC+9", "summerOffset": null } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+10 in summer." }, { "year": 1991, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+9 became the year-round time." }, { "year": 1992, "date": "1991-09-28", "description": "Standard time moved from UTC+9 to UTC+8, a shift of 1 hour." }, { "year": 1992, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+10 in summer." }, { "year": 1993, "date": "1992-09-26", "description": "Standard time moved from UTC+8 to UTC+9, a shift of 1 hour." }, { "year": 2012, "date": null, "description": "Standard time moved from UTC+9 to UTC+10, a shift of 1 hour." }, { "year": 2012, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+10 became the year-round time." }, { "year": 2015, "date": "2014-10-25", "description": "Standard time moved from UTC+10 to UTC+8, a shift of 2 hours." }, { "year": 2016, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+9 in summer." }, { "year": 2017, "date": null, "description": "Standard time moved from UTC+8 to UTC+9, a shift of 1 hour." }, { "year": 2017, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+9 became the year-round time." } ] }, { "zone": "Asia/Colombo", "standardOffset": "UTC+5:30", "standardOffsetMinutes": 330, "observesDst": false, "dstAdoptedIn": 2006, "dstAbolishedIn": 2007, "unchangedSince": 2007, "eras": [ { "from": 1970, "to": 1995, "clocksMove": false, "standardOffset": "UTC+5:30", "summerOffset": null }, { "from": 1996, "to": 1996, "clocksMove": true, "standardOffset": "UTC+5:30", "summerOffset": "UTC+6:30" }, { "from": 1997, "to": 2005, "clocksMove": false, "standardOffset": "UTC+6", "summerOffset": null }, { "from": 2006, "to": 2006, "clocksMove": true, "standardOffset": "UTC+5:30", "summerOffset": "UTC+6" }, { "from": 2007, "to": 2027, "clocksMove": false, "standardOffset": "UTC+5:30", "summerOffset": null } ], "changes": [ { "year": 1996, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+6:30 in summer." }, { "year": 1997, "date": "1996-10-25", "description": "Standard time moved from UTC+5:30 to UTC+6, a shift of 30 minutes." }, { "year": 1997, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+6 became the year-round time." }, { "year": 2006, "date": "2006-04-14", "description": "Standard time moved from UTC+6 to UTC+5:30, a shift of 30 minutes." }, { "year": 2006, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+6 in summer." }, { "year": 2007, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+5:30 became the year-round time." } ] }, { "zone": "Asia/Damascus", "standardOffset": "UTC+3", "standardOffsetMinutes": 180, "observesDst": false, "dstAdoptedIn": 1986, "dstAbolishedIn": 2023, "unchangedSince": 2023, "eras": [ { "from": 1970, "to": 1978, "clocksMove": true, "standardOffset": "UTC+2", "summerOffset": "UTC+3" }, { "from": 1979, "to": 1982, "clocksMove": false, "standardOffset": "UTC+2", "summerOffset": null }, { "from": 1983, "to": 1984, "clocksMove": true, "standardOffset": "UTC+2", "summerOffset": "UTC+3" }, { "from": 1985, "to": 1985, "clocksMove": false, "standardOffset": "UTC+2", "summerOffset": null }, { "from": 1986, "to": 2022, "clocksMove": true, "standardOffset": "UTC+2", "summerOffset": "UTC+3" }, { "from": 2023, "to": 2027, "clocksMove": false, "standardOffset": "UTC+3", "summerOffset": null } ], "changes": [ { "year": 1979, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+2 became the year-round time." }, { "year": 1983, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+3 in summer." }, { "year": 1985, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+2 became the year-round time." }, { "year": 1986, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+3 in summer." }, { "year": 2023, "date": null, "description": "Standard time moved from UTC+2 to UTC+3, a shift of 1 hour." }, { "year": 2023, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+3 became the year-round time." } ] }, { "zone": "Asia/Dhaka", "standardOffset": "UTC+6", "standardOffsetMinutes": 360, "observesDst": false, "dstAdoptedIn": 2009, "dstAbolishedIn": 2010, "unchangedSince": 2010, "eras": [ { "from": 1970, "to": 2008, "clocksMove": false, "standardOffset": "UTC+6", "summerOffset": null }, { "from": 2009, "to": 2009, "clocksMove": true, "standardOffset": "UTC+6", "summerOffset": "UTC+7" }, { "from": 2010, "to": 2027, "clocksMove": false, "standardOffset": "UTC+6", "summerOffset": null } ], "changes": [ { "year": 2009, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+7 in summer." }, { "year": 2010, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+6 became the year-round time." } ] }, { "zone": "Asia/Dili", "standardOffset": "UTC+9", "standardOffsetMinutes": 540, "observesDst": false, "dstAdoptedIn": 1976, "dstAbolishedIn": 1977, "unchangedSince": 2001, "eras": [ { "from": 1970, "to": 1975, "clocksMove": false, "standardOffset": "UTC+9", "summerOffset": null }, { "from": 1976, "to": 1976, "clocksMove": true, "standardOffset": "UTC+8", "summerOffset": "UTC+9" }, { "from": 1977, "to": 2000, "clocksMove": false, "standardOffset": "UTC+8", "summerOffset": null }, { "from": 2001, "to": 2027, "clocksMove": false, "standardOffset": "UTC+9", "summerOffset": null } ], "changes": [ { "year": 1976, "date": "1976-05-02", "description": "Standard time moved from UTC+9 to UTC+8, a shift of 1 hour." }, { "year": 1976, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+9 in summer." }, { "year": 1977, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+8 became the year-round time." }, { "year": 2001, "date": "2000-09-16", "description": "Standard time moved from UTC+8 to UTC+9, a shift of 1 hour." } ] }, { "zone": "Asia/Dushanbe", "standardOffset": "UTC+5", "standardOffsetMinutes": 300, "observesDst": false, "dstAdoptedIn": 1981, "dstAbolishedIn": 1991, "unchangedSince": 1992, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+6", "summerOffset": null }, { "from": 1981, "to": 1990, "clocksMove": true, "standardOffset": "UTC+6", "summerOffset": "UTC+7" }, { "from": 1991, "to": 1991, "clocksMove": false, "standardOffset": "UTC+6", "summerOffset": null }, { "from": 1992, "to": 2027, "clocksMove": false, "standardOffset": "UTC+5", "summerOffset": null } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+7 in summer." }, { "year": 1991, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+6 became the year-round time." }, { "year": 1992, "date": "1991-09-08", "description": "Standard time moved from UTC+6 to UTC+5, a shift of 1 hour." } ] }, { "zone": "Asia/Famagusta", "standardOffset": "UTC+2", "standardOffsetMinutes": 120, "observesDst": true, "dstAdoptedIn": 2018, "dstAbolishedIn": null, "unchangedSince": 2018, "eras": [ { "from": 1970, "to": 1974, "clocksMove": false, "standardOffset": "UTC+2", "summerOffset": null }, { "from": 1975, "to": 2016, "clocksMove": true, "standardOffset": "UTC+2", "summerOffset": "UTC+3" }, { "from": 2017, "to": 2017, "clocksMove": false, "standardOffset": "UTC+3", "summerOffset": null }, { "from": 2018, "to": 2027, "clocksMove": true, "standardOffset": "UTC+2", "summerOffset": "UTC+3" } ], "changes": [ { "year": 1975, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+3 in summer." }, { "year": 2017, "date": "2017-10-29", "description": "Standard time moved from UTC+2 to UTC+3, a shift of 1 hour." }, { "year": 2017, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+3 became the year-round time." }, { "year": 2018, "date": "2017-10-29", "description": "Standard time moved from UTC+3 to UTC+2, a shift of 1 hour." }, { "year": 2018, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+3 in summer." } ] }, { "zone": "Asia/Gaza", "standardOffset": "UTC+2", "standardOffsetMinutes": 120, "observesDst": true, "dstAdoptedIn": 1984, "dstAbolishedIn": null, "unchangedSince": 1984, "eras": [ { "from": 1970, "to": 1973, "clocksMove": false, "standardOffset": "UTC+2", "summerOffset": null }, { "from": 1974, "to": 1975, "clocksMove": true, "standardOffset": "UTC+2", "summerOffset": "UTC+3" }, { "from": 1976, "to": 1983, "clocksMove": false, "standardOffset": "UTC+2", "summerOffset": null }, { "from": 1984, "to": 2027, "clocksMove": true, "standardOffset": "UTC+2", "summerOffset": "UTC+3" } ], "changes": [ { "year": 1974, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+3 in summer." }, { "year": 1976, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+2 became the year-round time." }, { "year": 1984, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+3 in summer." } ] }, { "zone": "Asia/Hebron", "standardOffset": "UTC+2", "standardOffsetMinutes": 120, "observesDst": true, "dstAdoptedIn": 1984, "dstAbolishedIn": null, "unchangedSince": 1984, "eras": [ { "from": 1970, "to": 1973, "clocksMove": false, "standardOffset": "UTC+2", "summerOffset": null }, { "from": 1974, "to": 1975, "clocksMove": true, "standardOffset": "UTC+2", "summerOffset": "UTC+3" }, { "from": 1976, "to": 1983, "clocksMove": false, "standardOffset": "UTC+2", "summerOffset": null }, { "from": 1984, "to": 2027, "clocksMove": true, "standardOffset": "UTC+2", "summerOffset": "UTC+3" } ], "changes": [ { "year": 1974, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+3 in summer." }, { "year": 1976, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+2 became the year-round time." }, { "year": 1984, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+3 in summer." } ] }, { "zone": "Asia/Hong_Kong", "standardOffset": "UTC+8", "standardOffsetMinutes": 480, "observesDst": false, "dstAdoptedIn": 1979, "dstAbolishedIn": 1980, "unchangedSince": 1980, "eras": [ { "from": 1970, "to": 1973, "clocksMove": true, "standardOffset": "UTC+8", "summerOffset": "UTC+9" }, { "from": 1974, "to": 1974, "clocksMove": false, "standardOffset": "UTC+9", "summerOffset": null }, { "from": 1975, "to": 1976, "clocksMove": true, "standardOffset": "UTC+8", "summerOffset": "UTC+9" }, { "from": 1977, "to": 1978, "clocksMove": false, "standardOffset": "UTC+8", "summerOffset": null }, { "from": 1979, "to": 1979, "clocksMove": true, "standardOffset": "UTC+8", "summerOffset": "UTC+9" }, { "from": 1980, "to": 2027, "clocksMove": false, "standardOffset": "UTC+8", "summerOffset": null } ], "changes": [ { "year": 1974, "date": "1973-10-20", "description": "Standard time moved from UTC+8 to UTC+9, a shift of 1 hour." }, { "year": 1974, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+9 became the year-round time." }, { "year": 1975, "date": "1974-10-19", "description": "Standard time moved from UTC+9 to UTC+8, a shift of 1 hour." }, { "year": 1975, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+9 in summer." }, { "year": 1977, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+8 became the year-round time." }, { "year": 1979, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+9 in summer." }, { "year": 1980, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+8 became the year-round time." } ] }, { "zone": "Asia/Hovd", "standardOffset": "UTC+7", "standardOffsetMinutes": 420, "observesDst": false, "dstAdoptedIn": 2015, "dstAbolishedIn": 2017, "unchangedSince": 2017, "eras": [ { "from": 1970, "to": 1977, "clocksMove": false, "standardOffset": "UTC+6", "summerOffset": null }, { "from": 1978, "to": 1982, "clocksMove": false, "standardOffset": "UTC+7", "summerOffset": null }, { "from": 1983, "to": 1998, "clocksMove": true, "standardOffset": "UTC+7", "summerOffset": "UTC+8" }, { "from": 1999, "to": 2000, "clocksMove": false, "standardOffset": "UTC+7", "summerOffset": null }, { "from": 2001, "to": 2006, "clocksMove": true, "standardOffset": "UTC+7", "summerOffset": "UTC+8" }, { "from": 2007, "to": 2014, "clocksMove": false, "standardOffset": "UTC+7", "summerOffset": null }, { "from": 2015, "to": 2016, "clocksMove": true, "standardOffset": "UTC+7", "summerOffset": "UTC+8" }, { "from": 2017, "to": 2027, "clocksMove": false, "standardOffset": "UTC+7", "summerOffset": null } ], "changes": [ { "year": 1978, "date": "1977-12-31", "description": "Standard time moved from UTC+6 to UTC+7, a shift of 1 hour." }, { "year": 1983, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+8 in summer." }, { "year": 1999, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+7 became the year-round time." }, { "year": 2001, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+8 in summer." }, { "year": 2007, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+7 became the year-round time." }, { "year": 2015, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+8 in summer." }, { "year": 2017, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+7 became the year-round time." } ] }, { "zone": "Asia/Irkutsk", "standardOffset": "UTC+8", "standardOffsetMinutes": 480, "observesDst": false, "dstAdoptedIn": 1992, "dstAbolishedIn": 2012, "unchangedSince": 2015, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+8", "summerOffset": null }, { "from": 1981, "to": 1990, "clocksMove": true, "standardOffset": "UTC+8", "summerOffset": "UTC+9" }, { "from": 1991, "to": 1991, "clocksMove": false, "standardOffset": "UTC+8", "summerOffset": null }, { "from": 1992, "to": 1992, "clocksMove": true, "standardOffset": "UTC+7", "summerOffset": "UTC+9" }, { "from": 1993, "to": 2011, "clocksMove": true, "standardOffset": "UTC+8", "summerOffset": "UTC+9" }, { "from": 2012, "to": 2014, "clocksMove": false, "standardOffset": "UTC+9", "summerOffset": null }, { "from": 2015, "to": 2027, "clocksMove": false, "standardOffset": "UTC+8", "summerOffset": null } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+9 in summer." }, { "year": 1991, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+8 became the year-round time." }, { "year": 1992, "date": "1991-09-28", "description": "Standard time moved from UTC+8 to UTC+7, a shift of 1 hour." }, { "year": 1992, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+9 in summer." }, { "year": 1993, "date": "1992-09-26", "description": "Standard time moved from UTC+7 to UTC+8, a shift of 1 hour." }, { "year": 2012, "date": null, "description": "Standard time moved from UTC+8 to UTC+9, a shift of 1 hour." }, { "year": 2012, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+9 became the year-round time." }, { "year": 2015, "date": "2014-10-25", "description": "Standard time moved from UTC+9 to UTC+8, a shift of 1 hour." } ] }, { "zone": "Asia/Jerusalem", "standardOffset": "UTC+2", "standardOffsetMinutes": 120, "observesDst": true, "dstAdoptedIn": 1984, "dstAbolishedIn": null, "unchangedSince": 1984, "eras": [ { "from": 1970, "to": 1973, "clocksMove": false, "standardOffset": "UTC+2", "summerOffset": null }, { "from": 1974, "to": 1975, "clocksMove": true, "standardOffset": "UTC+2", "summerOffset": "UTC+3" }, { "from": 1976, "to": 1983, "clocksMove": false, "standardOffset": "UTC+2", "summerOffset": null }, { "from": 1984, "to": 2027, "clocksMove": true, "standardOffset": "UTC+2", "summerOffset": "UTC+3" } ], "changes": [ { "year": 1974, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+3 in summer." }, { "year": 1976, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+2 became the year-round time." }, { "year": 1984, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+3 in summer." } ] }, { "zone": "Asia/Kamchatka", "standardOffset": "UTC+12", "standardOffsetMinutes": 720, "observesDst": false, "dstAdoptedIn": 2011, "dstAbolishedIn": 2012, "unchangedSince": 2012, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+12", "summerOffset": null }, { "from": 1981, "to": 1990, "clocksMove": true, "standardOffset": "UTC+12", "summerOffset": "UTC+13" }, { "from": 1991, "to": 1991, "clocksMove": false, "standardOffset": "UTC+12", "summerOffset": null }, { "from": 1992, "to": 1992, "clocksMove": true, "standardOffset": "UTC+11", "summerOffset": "UTC+13" }, { "from": 1993, "to": 2009, "clocksMove": true, "standardOffset": "UTC+12", "summerOffset": "UTC+13" }, { "from": 2010, "to": 2010, "clocksMove": false, "standardOffset": "UTC+12", "summerOffset": null }, { "from": 2011, "to": 2011, "clocksMove": true, "standardOffset": "UTC+11", "summerOffset": "UTC+12" }, { "from": 2012, "to": 2027, "clocksMove": false, "standardOffset": "UTC+12", "summerOffset": null } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+13 in summer." }, { "year": 1991, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+12 became the year-round time." }, { "year": 1992, "date": "1991-09-28", "description": "Standard time moved from UTC+12 to UTC+11, a shift of 1 hour." }, { "year": 1992, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+13 in summer." }, { "year": 1993, "date": "1992-09-26", "description": "Standard time moved from UTC+11 to UTC+12, a shift of 1 hour." }, { "year": 2010, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+12 became the year-round time." }, { "year": 2011, "date": "2010-10-30", "description": "Standard time moved from UTC+12 to UTC+11, a shift of 1 hour." }, { "year": 2011, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+12 in summer." }, { "year": 2012, "date": null, "description": "Standard time moved from UTC+11 to UTC+12, a shift of 1 hour." }, { "year": 2012, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+12 became the year-round time." } ] }, { "zone": "Asia/Karachi", "standardOffset": "UTC+5", "standardOffsetMinutes": 300, "observesDst": false, "dstAdoptedIn": 2008, "dstAbolishedIn": 2010, "unchangedSince": 2010, "eras": [ { "from": 1970, "to": 2001, "clocksMove": false, "standardOffset": "UTC+5", "summerOffset": null }, { "from": 2002, "to": 2002, "clocksMove": true, "standardOffset": "UTC+5", "summerOffset": "UTC+6" }, { "from": 2003, "to": 2007, "clocksMove": false, "standardOffset": "UTC+5", "summerOffset": null }, { "from": 2008, "to": 2009, "clocksMove": true, "standardOffset": "UTC+5", "summerOffset": "UTC+6" }, { "from": 2010, "to": 2027, "clocksMove": false, "standardOffset": "UTC+5", "summerOffset": null } ], "changes": [ { "year": 2002, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+6 in summer." }, { "year": 2003, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+5 became the year-round time." }, { "year": 2008, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+6 in summer." }, { "year": 2010, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+5 became the year-round time." } ] }, { "zone": "Asia/Katmandu", "standardOffset": "UTC+5:45", "standardOffsetMinutes": 345, "observesDst": false, "dstAdoptedIn": null, "dstAbolishedIn": null, "unchangedSince": 1986, "eras": [ { "from": 1970, "to": 1985, "clocksMove": false, "standardOffset": "UTC+5:30", "summerOffset": null }, { "from": 1986, "to": 2027, "clocksMove": false, "standardOffset": "UTC+5:45", "summerOffset": null } ], "changes": [ { "year": 1986, "date": "1985-12-31", "description": "Standard time moved from UTC+5:30 to UTC+5:45, a shift of 15 minutes." } ] }, { "zone": "Asia/Khandyga", "standardOffset": "UTC+9", "standardOffsetMinutes": 540, "observesDst": false, "dstAdoptedIn": 1992, "dstAbolishedIn": 2012, "unchangedSince": 2015, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+9", "summerOffset": null }, { "from": 1981, "to": 1990, "clocksMove": true, "standardOffset": "UTC+9", "summerOffset": "UTC+10" }, { "from": 1991, "to": 1991, "clocksMove": false, "standardOffset": "UTC+9", "summerOffset": null }, { "from": 1992, "to": 1992, "clocksMove": true, "standardOffset": "UTC+8", "summerOffset": "UTC+10" }, { "from": 1993, "to": 2003, "clocksMove": true, "standardOffset": "UTC+9", "summerOffset": "UTC+10" }, { "from": 2004, "to": 2011, "clocksMove": true, "standardOffset": "UTC+10", "summerOffset": "UTC+11" }, { "from": 2012, "to": 2014, "clocksMove": false, "standardOffset": "UTC+10", "summerOffset": null }, { "from": 2015, "to": 2027, "clocksMove": false, "standardOffset": "UTC+9", "summerOffset": null } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+10 in summer." }, { "year": 1991, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+9 became the year-round time." }, { "year": 1992, "date": "1991-09-28", "description": "Standard time moved from UTC+9 to UTC+8, a shift of 1 hour." }, { "year": 1992, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+10 in summer." }, { "year": 1993, "date": "1992-09-26", "description": "Standard time moved from UTC+8 to UTC+9, a shift of 1 hour." }, { "year": 2004, "date": "2003-10-25", "description": "Standard time moved from UTC+9 to UTC+10, a shift of 1 hour." }, { "year": 2012, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+10 became the year-round time." }, { "year": 2015, "date": "2014-10-25", "description": "Standard time moved from UTC+10 to UTC+9, a shift of 1 hour." } ] }, { "zone": "Asia/Krasnoyarsk", "standardOffset": "UTC+7", "standardOffsetMinutes": 420, "observesDst": false, "dstAdoptedIn": 1992, "dstAbolishedIn": 2012, "unchangedSince": 2015, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+7", "summerOffset": null }, { "from": 1981, "to": 1990, "clocksMove": true, "standardOffset": "UTC+7", "summerOffset": "UTC+8" }, { "from": 1991, "to": 1991, "clocksMove": false, "standardOffset": "UTC+7", "summerOffset": null }, { "from": 1992, "to": 1992, "clocksMove": true, "standardOffset": "UTC+6", "summerOffset": "UTC+8" }, { "from": 1993, "to": 2011, "clocksMove": true, "standardOffset": "UTC+7", "summerOffset": "UTC+8" }, { "from": 2012, "to": 2014, "clocksMove": false, "standardOffset": "UTC+8", "summerOffset": null }, { "from": 2015, "to": 2027, "clocksMove": false, "standardOffset": "UTC+7", "summerOffset": null } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+8 in summer." }, { "year": 1991, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+7 became the year-round time." }, { "year": 1992, "date": "1991-09-28", "description": "Standard time moved from UTC+7 to UTC+6, a shift of 1 hour." }, { "year": 1992, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+8 in summer." }, { "year": 1993, "date": "1992-09-26", "description": "Standard time moved from UTC+6 to UTC+7, a shift of 1 hour." }, { "year": 2012, "date": null, "description": "Standard time moved from UTC+7 to UTC+8, a shift of 1 hour." }, { "year": 2012, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+8 became the year-round time." }, { "year": 2015, "date": "2014-10-25", "description": "Standard time moved from UTC+8 to UTC+7, a shift of 1 hour." } ] }, { "zone": "Asia/Kuala_Lumpur", "standardOffset": "UTC+8", "standardOffsetMinutes": 480, "observesDst": false, "dstAdoptedIn": null, "dstAbolishedIn": null, "unchangedSince": 1982, "eras": [ { "from": 1970, "to": 1981, "clocksMove": false, "standardOffset": "UTC+7:30", "summerOffset": null }, { "from": 1982, "to": 2027, "clocksMove": false, "standardOffset": "UTC+8", "summerOffset": null } ], "changes": [ { "year": 1982, "date": "1981-12-31", "description": "Standard time moved from UTC+7:30 to UTC+8, a shift of 30 minutes." } ] }, { "zone": "Asia/Macau", "standardOffset": "UTC+8", "standardOffsetMinutes": 480, "observesDst": false, "dstAdoptedIn": 1979, "dstAbolishedIn": 1980, "unchangedSince": 1980, "eras": [ { "from": 1970, "to": 1973, "clocksMove": true, "standardOffset": "UTC+8", "summerOffset": "UTC+9" }, { "from": 1974, "to": 1974, "clocksMove": false, "standardOffset": "UTC+9", "summerOffset": null }, { "from": 1975, "to": 1976, "clocksMove": true, "standardOffset": "UTC+8", "summerOffset": "UTC+9" }, { "from": 1977, "to": 1978, "clocksMove": false, "standardOffset": "UTC+8", "summerOffset": null }, { "from": 1979, "to": 1979, "clocksMove": true, "standardOffset": "UTC+8", "summerOffset": "UTC+9" }, { "from": 1980, "to": 2027, "clocksMove": false, "standardOffset": "UTC+8", "summerOffset": null } ], "changes": [ { "year": 1974, "date": "1973-10-20", "description": "Standard time moved from UTC+8 to UTC+9, a shift of 1 hour." }, { "year": 1974, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+9 became the year-round time." }, { "year": 1975, "date": "1974-10-19", "description": "Standard time moved from UTC+9 to UTC+8, a shift of 1 hour." }, { "year": 1975, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+9 in summer." }, { "year": 1977, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+8 became the year-round time." }, { "year": 1979, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+9 in summer." }, { "year": 1980, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+8 became the year-round time." } ] }, { "zone": "Asia/Magadan", "standardOffset": "UTC+11", "standardOffsetMinutes": 660, "observesDst": false, "dstAdoptedIn": 2016, "dstAbolishedIn": 2017, "unchangedSince": 2017, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+11", "summerOffset": null }, { "from": 1981, "to": 1990, "clocksMove": true, "standardOffset": "UTC+11", "summerOffset": "UTC+12" }, { "from": 1991, "to": 1991, "clocksMove": false, "standardOffset": "UTC+11", "summerOffset": null }, { "from": 1992, "to": 1992, "clocksMove": true, "standardOffset": "UTC+10", "summerOffset": "UTC+12" }, { "from": 1993, "to": 2011, "clocksMove": true, "standardOffset": "UTC+11", "summerOffset": "UTC+12" }, { "from": 2012, "to": 2014, "clocksMove": false, "standardOffset": "UTC+12", "summerOffset": null }, { "from": 2015, "to": 2015, "clocksMove": false, "standardOffset": "UTC+10", "summerOffset": null }, { "from": 2016, "to": 2016, "clocksMove": true, "standardOffset": "UTC+10", "summerOffset": "UTC+11" }, { "from": 2017, "to": 2027, "clocksMove": false, "standardOffset": "UTC+11", "summerOffset": null } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+12 in summer." }, { "year": 1991, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+11 became the year-round time." }, { "year": 1992, "date": "1991-09-28", "description": "Standard time moved from UTC+11 to UTC+10, a shift of 1 hour." }, { "year": 1992, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+12 in summer." }, { "year": 1993, "date": "1992-09-26", "description": "Standard time moved from UTC+10 to UTC+11, a shift of 1 hour." }, { "year": 2012, "date": null, "description": "Standard time moved from UTC+11 to UTC+12, a shift of 1 hour." }, { "year": 2012, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+12 became the year-round time." }, { "year": 2015, "date": "2014-10-25", "description": "Standard time moved from UTC+12 to UTC+10, a shift of 2 hours." }, { "year": 2016, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+11 in summer." }, { "year": 2017, "date": null, "description": "Standard time moved from UTC+10 to UTC+11, a shift of 1 hour." }, { "year": 2017, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+11 became the year-round time." } ] }, { "zone": "Asia/Manila", "standardOffset": "UTC+8", "standardOffsetMinutes": 480, "observesDst": false, "dstAdoptedIn": 1990, "dstAbolishedIn": 1991, "unchangedSince": 1991, "eras": [ { "from": 1970, "to": 1976, "clocksMove": false, "standardOffset": "UTC+8", "summerOffset": null }, { "from": 1977, "to": 1977, "clocksMove": true, "standardOffset": "UTC+8", "summerOffset": "UTC+9" }, { "from": 1978, "to": 1989, "clocksMove": false, "standardOffset": "UTC+8", "summerOffset": null }, { "from": 1990, "to": 1990, "clocksMove": true, "standardOffset": "UTC+8", "summerOffset": "UTC+9" }, { "from": 1991, "to": 2027, "clocksMove": false, "standardOffset": "UTC+8", "summerOffset": null } ], "changes": [ { "year": 1977, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+9 in summer." }, { "year": 1978, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+8 became the year-round time." }, { "year": 1990, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+9 in summer." }, { "year": 1991, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+8 became the year-round time." } ] }, { "zone": "Asia/Novokuznetsk", "standardOffset": "UTC+7", "standardOffsetMinutes": 420, "observesDst": false, "dstAdoptedIn": 2011, "dstAbolishedIn": 2012, "unchangedSince": 2012, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+7", "summerOffset": null }, { "from": 1981, "to": 1990, "clocksMove": true, "standardOffset": "UTC+7", "summerOffset": "UTC+8" }, { "from": 1991, "to": 1991, "clocksMove": false, "standardOffset": "UTC+7", "summerOffset": null }, { "from": 1992, "to": 1992, "clocksMove": true, "standardOffset": "UTC+6", "summerOffset": "UTC+8" }, { "from": 1993, "to": 2009, "clocksMove": true, "standardOffset": "UTC+7", "summerOffset": "UTC+8" }, { "from": 2010, "to": 2010, "clocksMove": false, "standardOffset": "UTC+7", "summerOffset": null }, { "from": 2011, "to": 2011, "clocksMove": true, "standardOffset": "UTC+6", "summerOffset": "UTC+7" }, { "from": 2012, "to": 2027, "clocksMove": false, "standardOffset": "UTC+7", "summerOffset": null } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+8 in summer." }, { "year": 1991, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+7 became the year-round time." }, { "year": 1992, "date": "1991-09-28", "description": "Standard time moved from UTC+7 to UTC+6, a shift of 1 hour." }, { "year": 1992, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+8 in summer." }, { "year": 1993, "date": "1992-09-26", "description": "Standard time moved from UTC+6 to UTC+7, a shift of 1 hour." }, { "year": 2010, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+7 became the year-round time." }, { "year": 2011, "date": "2010-10-30", "description": "Standard time moved from UTC+7 to UTC+6, a shift of 1 hour." }, { "year": 2011, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+7 in summer." }, { "year": 2012, "date": null, "description": "Standard time moved from UTC+6 to UTC+7, a shift of 1 hour." }, { "year": 2012, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+7 became the year-round time." } ] }, { "zone": "Asia/Novosibirsk", "standardOffset": "UTC+7", "standardOffsetMinutes": 420, "observesDst": false, "dstAdoptedIn": 1994, "dstAbolishedIn": 2012, "unchangedSince": 2017, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+7", "summerOffset": null }, { "from": 1981, "to": 1990, "clocksMove": true, "standardOffset": "UTC+7", "summerOffset": "UTC+8" }, { "from": 1991, "to": 1991, "clocksMove": false, "standardOffset": "UTC+7", "summerOffset": null }, { "from": 1992, "to": 1992, "clocksMove": true, "standardOffset": "UTC+6", "summerOffset": "UTC+8" }, { "from": 1993, "to": 1993, "clocksMove": false, "standardOffset": "UTC+7", "summerOffset": null }, { "from": 1994, "to": 2011, "clocksMove": true, "standardOffset": "UTC+6", "summerOffset": "UTC+7" }, { "from": 2012, "to": 2014, "clocksMove": false, "standardOffset": "UTC+7", "summerOffset": null }, { "from": 2015, "to": 2016, "clocksMove": false, "standardOffset": "UTC+6", "summerOffset": null }, { "from": 2017, "to": 2027, "clocksMove": false, "standardOffset": "UTC+7", "summerOffset": null } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+8 in summer." }, { "year": 1991, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+7 became the year-round time." }, { "year": 1992, "date": "1991-09-28", "description": "Standard time moved from UTC+7 to UTC+6, a shift of 1 hour." }, { "year": 1992, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+8 in summer." }, { "year": 1993, "date": "1992-09-26", "description": "Standard time moved from UTC+6 to UTC+7, a shift of 1 hour." }, { "year": 1993, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+7 became the year-round time." }, { "year": 1994, "date": "1993-09-25", "description": "Standard time moved from UTC+7 to UTC+6, a shift of 1 hour." }, { "year": 1994, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+7 in summer." }, { "year": 2012, "date": null, "description": "Standard time moved from UTC+6 to UTC+7, a shift of 1 hour." }, { "year": 2012, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+7 became the year-round time." }, { "year": 2015, "date": "2014-10-25", "description": "Standard time moved from UTC+7 to UTC+6, a shift of 1 hour." }, { "year": 2017, "date": "2016-07-23", "description": "Standard time moved from UTC+6 to UTC+7, a shift of 1 hour." } ] }, { "zone": "Asia/Omsk", "standardOffset": "UTC+6", "standardOffsetMinutes": 360, "observesDst": false, "dstAdoptedIn": 1992, "dstAbolishedIn": 2012, "unchangedSince": 2015, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+6", "summerOffset": null }, { "from": 1981, "to": 1990, "clocksMove": true, "standardOffset": "UTC+6", "summerOffset": "UTC+7" }, { "from": 1991, "to": 1991, "clocksMove": false, "standardOffset": "UTC+6", "summerOffset": null }, { "from": 1992, "to": 1992, "clocksMove": true, "standardOffset": "UTC+5", "summerOffset": "UTC+7" }, { "from": 1993, "to": 2011, "clocksMove": true, "standardOffset": "UTC+6", "summerOffset": "UTC+7" }, { "from": 2012, "to": 2014, "clocksMove": false, "standardOffset": "UTC+7", "summerOffset": null }, { "from": 2015, "to": 2027, "clocksMove": false, "standardOffset": "UTC+6", "summerOffset": null } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+7 in summer." }, { "year": 1991, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+6 became the year-round time." }, { "year": 1992, "date": "1991-09-28", "description": "Standard time moved from UTC+6 to UTC+5, a shift of 1 hour." }, { "year": 1992, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+7 in summer." }, { "year": 1993, "date": "1992-09-26", "description": "Standard time moved from UTC+5 to UTC+6, a shift of 1 hour." }, { "year": 2012, "date": null, "description": "Standard time moved from UTC+6 to UTC+7, a shift of 1 hour." }, { "year": 2012, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+7 became the year-round time." }, { "year": 2015, "date": "2014-10-25", "description": "Standard time moved from UTC+7 to UTC+6, a shift of 1 hour." } ] }, { "zone": "Asia/Oral", "standardOffset": "UTC+5", "standardOffsetMinutes": 300, "observesDst": false, "dstAdoptedIn": 1990, "dstAbolishedIn": 2005, "unchangedSince": 2005, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+5", "summerOffset": null }, { "from": 1981, "to": 1981, "clocksMove": true, "standardOffset": "UTC+5", "summerOffset": "UTC+6" }, { "from": 1982, "to": 1982, "clocksMove": false, "standardOffset": "UTC+6", "summerOffset": null }, { "from": 1983, "to": 1988, "clocksMove": true, "standardOffset": "UTC+5", "summerOffset": "UTC+6" }, { "from": 1989, "to": 1989, "clocksMove": false, "standardOffset": "UTC+5", "summerOffset": null }, { "from": 1990, "to": 2004, "clocksMove": true, "standardOffset": "UTC+4", "summerOffset": "UTC+5" }, { "from": 2005, "to": 2027, "clocksMove": false, "standardOffset": "UTC+5", "summerOffset": null } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+6 in summer." }, { "year": 1982, "date": "1982-09-30", "description": "Standard time moved from UTC+5 to UTC+6, a shift of 1 hour." }, { "year": 1982, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+6 became the year-round time." }, { "year": 1983, "date": "1982-09-30", "description": "Standard time moved from UTC+6 to UTC+5, a shift of 1 hour." }, { "year": 1983, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+6 in summer." }, { "year": 1989, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+5 became the year-round time." }, { "year": 1990, "date": "1989-09-23", "description": "Standard time moved from UTC+5 to UTC+4, a shift of 1 hour." }, { "year": 1990, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+5 in summer." }, { "year": 2005, "date": null, "description": "Standard time moved from UTC+4 to UTC+5, a shift of 1 hour." }, { "year": 2005, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+5 became the year-round time." } ] }, { "zone": "Asia/Pontianak", "standardOffset": "UTC+7", "standardOffsetMinutes": 420, "observesDst": false, "dstAdoptedIn": null, "dstAbolishedIn": null, "unchangedSince": 1988, "eras": [ { "from": 1970, "to": 1987, "clocksMove": false, "standardOffset": "UTC+8", "summerOffset": null }, { "from": 1988, "to": 2027, "clocksMove": false, "standardOffset": "UTC+7", "summerOffset": null } ], "changes": [ { "year": 1988, "date": "1987-12-31", "description": "Standard time moved from UTC+8 to UTC+7, a shift of 1 hour." } ] }, { "zone": "Asia/Pyongyang", "standardOffset": "UTC+9", "standardOffsetMinutes": 540, "observesDst": false, "dstAdoptedIn": 2018, "dstAbolishedIn": 2019, "unchangedSince": 2019, "eras": [ { "from": 1970, "to": 2015, "clocksMove": false, "standardOffset": "UTC+9", "summerOffset": null }, { "from": 2016, "to": 2017, "clocksMove": false, "standardOffset": "UTC+8:30", "summerOffset": null }, { "from": 2018, "to": 2018, "clocksMove": true, "standardOffset": "UTC+8:30", "summerOffset": "UTC+9" }, { "from": 2019, "to": 2027, "clocksMove": false, "standardOffset": "UTC+9", "summerOffset": null } ], "changes": [ { "year": 2016, "date": "2015-08-14", "description": "Standard time moved from UTC+9 to UTC+8:30, a shift of 30 minutes." }, { "year": 2018, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+9 in summer." }, { "year": 2019, "date": null, "description": "Standard time moved from UTC+8:30 to UTC+9, a shift of 30 minutes." }, { "year": 2019, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+9 became the year-round time." } ] }, { "zone": "Asia/Qatar", "standardOffset": "UTC+3", "standardOffsetMinutes": 180, "observesDst": false, "dstAdoptedIn": 1972, "dstAbolishedIn": 1973, "unchangedSince": 1973, "eras": [ { "from": 1970, "to": 1971, "clocksMove": false, "standardOffset": "UTC+4", "summerOffset": null }, { "from": 1972, "to": 1972, "clocksMove": true, "standardOffset": "UTC+3", "summerOffset": "UTC+4" }, { "from": 1973, "to": 2027, "clocksMove": false, "standardOffset": "UTC+3", "summerOffset": null } ], "changes": [ { "year": 1972, "date": "1972-05-31", "description": "Standard time moved from UTC+4 to UTC+3, a shift of 1 hour." }, { "year": 1972, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+4 in summer." }, { "year": 1973, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+3 became the year-round time." } ] }, { "zone": "Asia/Qostanay", "standardOffset": "UTC+5", "standardOffsetMinutes": 300, "observesDst": false, "dstAdoptedIn": 2024, "dstAbolishedIn": 2025, "unchangedSince": 2025, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+5", "summerOffset": null }, { "from": 1981, "to": 1981, "clocksMove": true, "standardOffset": "UTC+5", "summerOffset": "UTC+6" }, { "from": 1982, "to": 1982, "clocksMove": false, "standardOffset": "UTC+6", "summerOffset": null }, { "from": 1983, "to": 1990, "clocksMove": true, "standardOffset": "UTC+5", "summerOffset": "UTC+6" }, { "from": 1991, "to": 1991, "clocksMove": false, "standardOffset": "UTC+5", "summerOffset": null }, { "from": 1992, "to": 1992, "clocksMove": true, "standardOffset": "UTC+4", "summerOffset": "UTC+6" }, { "from": 1993, "to": 2004, "clocksMove": true, "standardOffset": "UTC+5", "summerOffset": "UTC+6" }, { "from": 2005, "to": 2023, "clocksMove": false, "standardOffset": "UTC+6", "summerOffset": null }, { "from": 2024, "to": 2024, "clocksMove": true, "standardOffset": "UTC+5", "summerOffset": "UTC+6" }, { "from": 2025, "to": 2027, "clocksMove": false, "standardOffset": "UTC+5", "summerOffset": null } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+6 in summer." }, { "year": 1982, "date": "1982-09-30", "description": "Standard time moved from UTC+5 to UTC+6, a shift of 1 hour." }, { "year": 1982, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+6 became the year-round time." }, { "year": 1983, "date": "1982-09-30", "description": "Standard time moved from UTC+6 to UTC+5, a shift of 1 hour." }, { "year": 1983, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+6 in summer." }, { "year": 1991, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+5 became the year-round time." }, { "year": 1992, "date": "1991-09-28", "description": "Standard time moved from UTC+5 to UTC+4, a shift of 1 hour." }, { "year": 1992, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+6 in summer." }, { "year": 1993, "date": "1992-09-26", "description": "Standard time moved from UTC+4 to UTC+5, a shift of 1 hour." }, { "year": 2005, "date": null, "description": "Standard time moved from UTC+5 to UTC+6, a shift of 1 hour." }, { "year": 2005, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+6 became the year-round time." }, { "year": 2024, "date": "2024-02-29", "description": "Standard time moved from UTC+6 to UTC+5, a shift of 1 hour." }, { "year": 2024, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+6 in summer." }, { "year": 2025, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+5 became the year-round time." } ] }, { "zone": "Asia/Qyzylorda", "standardOffset": "UTC+5", "standardOffsetMinutes": 300, "observesDst": false, "dstAdoptedIn": 1992, "dstAbolishedIn": 2005, "unchangedSince": 2019, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+5", "summerOffset": null }, { "from": 1981, "to": 1981, "clocksMove": true, "standardOffset": "UTC+5", "summerOffset": "UTC+6" }, { "from": 1982, "to": 1982, "clocksMove": false, "standardOffset": "UTC+6", "summerOffset": null }, { "from": 1983, "to": 1990, "clocksMove": true, "standardOffset": "UTC+5", "summerOffset": "UTC+6" }, { "from": 1991, "to": 1991, "clocksMove": false, "standardOffset": "UTC+5", "summerOffset": null }, { "from": 1992, "to": 2004, "clocksMove": true, "standardOffset": "UTC+5", "summerOffset": "UTC+6" }, { "from": 2005, "to": 2018, "clocksMove": false, "standardOffset": "UTC+6", "summerOffset": null }, { "from": 2019, "to": 2027, "clocksMove": false, "standardOffset": "UTC+5", "summerOffset": null } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+6 in summer." }, { "year": 1982, "date": "1982-09-30", "description": "Standard time moved from UTC+5 to UTC+6, a shift of 1 hour." }, { "year": 1982, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+6 became the year-round time." }, { "year": 1983, "date": "1982-09-30", "description": "Standard time moved from UTC+6 to UTC+5, a shift of 1 hour." }, { "year": 1983, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+6 in summer." }, { "year": 1991, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+5 became the year-round time." }, { "year": 1992, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+6 in summer." }, { "year": 2005, "date": null, "description": "Standard time moved from UTC+5 to UTC+6, a shift of 1 hour." }, { "year": 2005, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+6 became the year-round time." }, { "year": 2019, "date": "2018-12-20", "description": "Standard time moved from UTC+6 to UTC+5, a shift of 1 hour." } ] }, { "zone": "Asia/Saigon", "standardOffset": "UTC+7", "standardOffsetMinutes": 420, "observesDst": false, "dstAdoptedIn": 1975, "dstAbolishedIn": 1976, "unchangedSince": 1976, "eras": [ { "from": 1970, "to": 1974, "clocksMove": false, "standardOffset": "UTC+8", "summerOffset": null }, { "from": 1975, "to": 1975, "clocksMove": true, "standardOffset": "UTC+7", "summerOffset": "UTC+8" }, { "from": 1976, "to": 2027, "clocksMove": false, "standardOffset": "UTC+7", "summerOffset": null } ], "changes": [ { "year": 1975, "date": "1975-06-12", "description": "Standard time moved from UTC+8 to UTC+7, a shift of 1 hour." }, { "year": 1975, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+8 in summer." }, { "year": 1976, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+7 became the year-round time." } ] }, { "zone": "Asia/Sakhalin", "standardOffset": "UTC+11", "standardOffsetMinutes": 660, "observesDst": false, "dstAdoptedIn": 2016, "dstAbolishedIn": 2017, "unchangedSince": 2017, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+11", "summerOffset": null }, { "from": 1981, "to": 1990, "clocksMove": true, "standardOffset": "UTC+11", "summerOffset": "UTC+12" }, { "from": 1991, "to": 1991, "clocksMove": false, "standardOffset": "UTC+11", "summerOffset": null }, { "from": 1992, "to": 1992, "clocksMove": true, "standardOffset": "UTC+10", "summerOffset": "UTC+12" }, { "from": 1993, "to": 1996, "clocksMove": true, "standardOffset": "UTC+11", "summerOffset": "UTC+12" }, { "from": 1997, "to": 1997, "clocksMove": false, "standardOffset": "UTC+11", "summerOffset": null }, { "from": 1998, "to": 2011, "clocksMove": true, "standardOffset": "UTC+10", "summerOffset": "UTC+11" }, { "from": 2012, "to": 2014, "clocksMove": false, "standardOffset": "UTC+11", "summerOffset": null }, { "from": 2015, "to": 2015, "clocksMove": false, "standardOffset": "UTC+10", "summerOffset": null }, { "from": 2016, "to": 2016, "clocksMove": true, "standardOffset": "UTC+10", "summerOffset": "UTC+11" }, { "from": 2017, "to": 2027, "clocksMove": false, "standardOffset": "UTC+11", "summerOffset": null } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+12 in summer." }, { "year": 1991, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+11 became the year-round time." }, { "year": 1992, "date": "1991-09-28", "description": "Standard time moved from UTC+11 to UTC+10, a shift of 1 hour." }, { "year": 1992, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+12 in summer." }, { "year": 1993, "date": "1992-09-26", "description": "Standard time moved from UTC+10 to UTC+11, a shift of 1 hour." }, { "year": 1997, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+11 became the year-round time." }, { "year": 1998, "date": "1997-10-25", "description": "Standard time moved from UTC+11 to UTC+10, a shift of 1 hour." }, { "year": 1998, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+11 in summer." }, { "year": 2012, "date": null, "description": "Standard time moved from UTC+10 to UTC+11, a shift of 1 hour." }, { "year": 2012, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+11 became the year-round time." }, { "year": 2015, "date": "2014-10-25", "description": "Standard time moved from UTC+11 to UTC+10, a shift of 1 hour." }, { "year": 2016, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+11 in summer." }, { "year": 2017, "date": null, "description": "Standard time moved from UTC+10 to UTC+11, a shift of 1 hour." }, { "year": 2017, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+11 became the year-round time." } ] }, { "zone": "Asia/Samarkand", "standardOffset": "UTC+5", "standardOffsetMinutes": 300, "observesDst": false, "dstAdoptedIn": 1983, "dstAbolishedIn": 1992, "unchangedSince": 1992, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+5", "summerOffset": null }, { "from": 1981, "to": 1981, "clocksMove": true, "standardOffset": "UTC+5", "summerOffset": "UTC+6" }, { "from": 1982, "to": 1982, "clocksMove": false, "standardOffset": "UTC+6", "summerOffset": null }, { "from": 1983, "to": 1991, "clocksMove": true, "standardOffset": "UTC+5", "summerOffset": "UTC+6" }, { "from": 1992, "to": 2027, "clocksMove": false, "standardOffset": "UTC+5", "summerOffset": null } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+6 in summer." }, { "year": 1982, "date": "1982-09-30", "description": "Standard time moved from UTC+5 to UTC+6, a shift of 1 hour." }, { "year": 1982, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+6 became the year-round time." }, { "year": 1983, "date": "1982-09-30", "description": "Standard time moved from UTC+6 to UTC+5, a shift of 1 hour." }, { "year": 1983, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+6 in summer." }, { "year": 1992, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+5 became the year-round time." } ] }, { "zone": "Asia/Seoul", "standardOffset": "UTC+9", "standardOffsetMinutes": 540, "observesDst": false, "dstAdoptedIn": 1987, "dstAbolishedIn": 1989, "unchangedSince": 1989, "eras": [ { "from": 1970, "to": 1986, "clocksMove": false, "standardOffset": "UTC+9", "summerOffset": null }, { "from": 1987, "to": 1988, "clocksMove": true, "standardOffset": "UTC+9", "summerOffset": "UTC+10" }, { "from": 1989, "to": 2027, "clocksMove": false, "standardOffset": "UTC+9", "summerOffset": null } ], "changes": [ { "year": 1987, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+10 in summer." }, { "year": 1989, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+9 became the year-round time." } ] }, { "zone": "Asia/Shanghai", "standardOffset": "UTC+8", "standardOffsetMinutes": 480, "observesDst": false, "dstAdoptedIn": 1986, "dstAbolishedIn": 1992, "unchangedSince": 1992, "eras": [ { "from": 1970, "to": 1985, "clocksMove": false, "standardOffset": "UTC+8", "summerOffset": null }, { "from": 1986, "to": 1991, "clocksMove": true, "standardOffset": "UTC+8", "summerOffset": "UTC+9" }, { "from": 1992, "to": 2027, "clocksMove": false, "standardOffset": "UTC+8", "summerOffset": null } ], "changes": [ { "year": 1986, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+9 in summer." }, { "year": 1992, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+8 became the year-round time." } ] }, { "zone": "Asia/Singapore", "standardOffset": "UTC+8", "standardOffsetMinutes": 480, "observesDst": false, "dstAdoptedIn": null, "dstAbolishedIn": null, "unchangedSince": 1982, "eras": [ { "from": 1970, "to": 1981, "clocksMove": false, "standardOffset": "UTC+7:30", "summerOffset": null }, { "from": 1982, "to": 2027, "clocksMove": false, "standardOffset": "UTC+8", "summerOffset": null } ], "changes": [ { "year": 1982, "date": "1981-12-31", "description": "Standard time moved from UTC+7:30 to UTC+8, a shift of 30 minutes." } ] }, { "zone": "Asia/Srednekolymsk", "standardOffset": "UTC+11", "standardOffsetMinutes": 660, "observesDst": false, "dstAdoptedIn": 1992, "dstAbolishedIn": 2012, "unchangedSince": 2015, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+11", "summerOffset": null }, { "from": 1981, "to": 1990, "clocksMove": true, "standardOffset": "UTC+11", "summerOffset": "UTC+12" }, { "from": 1991, "to": 1991, "clocksMove": false, "standardOffset": "UTC+11", "summerOffset": null }, { "from": 1992, "to": 1992, "clocksMove": true, "standardOffset": "UTC+10", "summerOffset": "UTC+12" }, { "from": 1993, "to": 2011, "clocksMove": true, "standardOffset": "UTC+11", "summerOffset": "UTC+12" }, { "from": 2012, "to": 2014, "clocksMove": false, "standardOffset": "UTC+12", "summerOffset": null }, { "from": 2015, "to": 2027, "clocksMove": false, "standardOffset": "UTC+11", "summerOffset": null } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+12 in summer." }, { "year": 1991, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+11 became the year-round time." }, { "year": 1992, "date": "1991-09-28", "description": "Standard time moved from UTC+11 to UTC+10, a shift of 1 hour." }, { "year": 1992, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+12 in summer." }, { "year": 1993, "date": "1992-09-26", "description": "Standard time moved from UTC+10 to UTC+11, a shift of 1 hour." }, { "year": 2012, "date": null, "description": "Standard time moved from UTC+11 to UTC+12, a shift of 1 hour." }, { "year": 2012, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+12 became the year-round time." }, { "year": 2015, "date": "2014-10-25", "description": "Standard time moved from UTC+12 to UTC+11, a shift of 1 hour." } ] }, { "zone": "Asia/Taipei", "standardOffset": "UTC+8", "standardOffsetMinutes": 480, "observesDst": false, "dstAdoptedIn": 1979, "dstAbolishedIn": 1980, "unchangedSince": 1980, "eras": [ { "from": 1970, "to": 1973, "clocksMove": false, "standardOffset": "UTC+8", "summerOffset": null }, { "from": 1974, "to": 1975, "clocksMove": true, "standardOffset": "UTC+8", "summerOffset": "UTC+9" }, { "from": 1976, "to": 1978, "clocksMove": false, "standardOffset": "UTC+8", "summerOffset": null }, { "from": 1979, "to": 1979, "clocksMove": true, "standardOffset": "UTC+8", "summerOffset": "UTC+9" }, { "from": 1980, "to": 2027, "clocksMove": false, "standardOffset": "UTC+8", "summerOffset": null } ], "changes": [ { "year": 1974, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+9 in summer." }, { "year": 1976, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+8 became the year-round time." }, { "year": 1979, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+9 in summer." }, { "year": 1980, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+8 became the year-round time." } ] }, { "zone": "Asia/Tashkent", "standardOffset": "UTC+5", "standardOffsetMinutes": 300, "observesDst": false, "dstAdoptedIn": 1981, "dstAbolishedIn": 1991, "unchangedSince": 1992, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+6", "summerOffset": null }, { "from": 1981, "to": 1990, "clocksMove": true, "standardOffset": "UTC+6", "summerOffset": "UTC+7" }, { "from": 1991, "to": 1991, "clocksMove": false, "standardOffset": "UTC+6", "summerOffset": null }, { "from": 1992, "to": 2027, "clocksMove": false, "standardOffset": "UTC+5", "summerOffset": null } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+7 in summer." }, { "year": 1991, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+6 became the year-round time." }, { "year": 1992, "date": "1991-09-28", "description": "Standard time moved from UTC+6 to UTC+5, a shift of 1 hour." } ] }, { "zone": "Asia/Tbilisi", "standardOffset": "UTC+4", "standardOffsetMinutes": 240, "observesDst": false, "dstAdoptedIn": 2005, "dstAbolishedIn": 2006, "unchangedSince": 2006, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+4", "summerOffset": null }, { "from": 1981, "to": 1990, "clocksMove": true, "standardOffset": "UTC+4", "summerOffset": "UTC+5" }, { "from": 1991, "to": 1991, "clocksMove": false, "standardOffset": "UTC+4", "summerOffset": null }, { "from": 1992, "to": 1994, "clocksMove": true, "standardOffset": "UTC+3", "summerOffset": "UTC+4" }, { "from": 1995, "to": 1996, "clocksMove": true, "standardOffset": "UTC+4", "summerOffset": "UTC+5" }, { "from": 1997, "to": 1997, "clocksMove": false, "standardOffset": "UTC+5", "summerOffset": null }, { "from": 1998, "to": 2003, "clocksMove": true, "standardOffset": "UTC+4", "summerOffset": "UTC+5" }, { "from": 2004, "to": 2004, "clocksMove": false, "standardOffset": "UTC+4", "summerOffset": null }, { "from": 2005, "to": 2005, "clocksMove": true, "standardOffset": "UTC+3", "summerOffset": "UTC+4" }, { "from": 2006, "to": 2027, "clocksMove": false, "standardOffset": "UTC+4", "summerOffset": null } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+5 in summer." }, { "year": 1991, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+4 became the year-round time." }, { "year": 1992, "date": "1991-09-28", "description": "Standard time moved from UTC+4 to UTC+3, a shift of 1 hour." }, { "year": 1992, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+4 in summer." }, { "year": 1995, "date": "1995-03-25", "description": "Standard time moved from UTC+3 to UTC+4, a shift of 1 hour." }, { "year": 1997, "date": "1997-10-25", "description": "Standard time moved from UTC+4 to UTC+5, a shift of 1 hour." }, { "year": 1997, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+5 became the year-round time." }, { "year": 1998, "date": "1997-10-25", "description": "Standard time moved from UTC+5 to UTC+4, a shift of 1 hour." }, { "year": 1998, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+5 in summer." }, { "year": 2004, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+4 became the year-round time." }, { "year": 2005, "date": "2004-06-26", "description": "Standard time moved from UTC+4 to UTC+3, a shift of 1 hour." }, { "year": 2005, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+4 in summer." }, { "year": 2006, "date": null, "description": "Standard time moved from UTC+3 to UTC+4, a shift of 1 hour." }, { "year": 2006, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+4 became the year-round time." } ] }, { "zone": "Asia/Tehran", "standardOffset": "UTC+3:30", "standardOffsetMinutes": 210, "observesDst": false, "dstAdoptedIn": 2008, "dstAbolishedIn": 2023, "unchangedSince": 2023, "eras": [ { "from": 1970, "to": 1976, "clocksMove": false, "standardOffset": "UTC+3:30", "summerOffset": null }, { "from": 1977, "to": 1977, "clocksMove": true, "standardOffset": "UTC+3:30", "summerOffset": "UTC+4:30" }, { "from": 1978, "to": 1978, "clocksMove": true, "standardOffset": "UTC+4", "summerOffset": "UTC+5" }, { "from": 1979, "to": 1980, "clocksMove": true, "standardOffset": "UTC+3:30", "summerOffset": "UTC+4:30" }, { "from": 1981, "to": 1990, "clocksMove": false, "standardOffset": "UTC+3:30", "summerOffset": null }, { "from": 1991, "to": 2005, "clocksMove": true, "standardOffset": "UTC+3:30", "summerOffset": "UTC+4:30" }, { "from": 2006, "to": 2007, "clocksMove": false, "standardOffset": "UTC+3:30", "summerOffset": null }, { "from": 2008, "to": 2022, "clocksMove": true, "standardOffset": "UTC+3:30", "summerOffset": "UTC+4:30" }, { "from": 2023, "to": 2027, "clocksMove": false, "standardOffset": "UTC+3:30", "summerOffset": null } ], "changes": [ { "year": 1977, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+4:30 in summer." }, { "year": 1978, "date": "1978-03-24", "description": "Standard time moved from UTC+3:30 to UTC+4, a shift of 30 minutes." }, { "year": 1979, "date": "1978-08-04", "description": "Standard time moved from UTC+4 to UTC+3:30, a shift of 30 minutes." }, { "year": 1981, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+3:30 became the year-round time." }, { "year": 1991, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+4:30 in summer." }, { "year": 2006, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+3:30 became the year-round time." }, { "year": 2008, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+4:30 in summer." }, { "year": 2023, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+3:30 became the year-round time." } ] }, { "zone": "Asia/Thimphu", "standardOffset": "UTC+6", "standardOffsetMinutes": 360, "observesDst": false, "dstAdoptedIn": null, "dstAbolishedIn": null, "unchangedSince": 1988, "eras": [ { "from": 1970, "to": 1987, "clocksMove": false, "standardOffset": "UTC+5:30", "summerOffset": null }, { "from": 1988, "to": 2027, "clocksMove": false, "standardOffset": "UTC+6", "summerOffset": null } ], "changes": [ { "year": 1988, "date": "1987-09-30", "description": "Standard time moved from UTC+5:30 to UTC+6, a shift of 30 minutes." } ] }, { "zone": "Asia/Tomsk", "standardOffset": "UTC+7", "standardOffsetMinutes": 420, "observesDst": false, "dstAdoptedIn": 2016, "dstAbolishedIn": 2017, "unchangedSince": 2017, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+7", "summerOffset": null }, { "from": 1981, "to": 1990, "clocksMove": true, "standardOffset": "UTC+7", "summerOffset": "UTC+8" }, { "from": 1991, "to": 1991, "clocksMove": false, "standardOffset": "UTC+7", "summerOffset": null }, { "from": 1992, "to": 1992, "clocksMove": true, "standardOffset": "UTC+6", "summerOffset": "UTC+8" }, { "from": 1993, "to": 2001, "clocksMove": true, "standardOffset": "UTC+7", "summerOffset": "UTC+8" }, { "from": 2002, "to": 2002, "clocksMove": false, "standardOffset": "UTC+7", "summerOffset": null }, { "from": 2003, "to": 2011, "clocksMove": true, "standardOffset": "UTC+6", "summerOffset": "UTC+7" }, { "from": 2012, "to": 2014, "clocksMove": false, "standardOffset": "UTC+7", "summerOffset": null }, { "from": 2015, "to": 2015, "clocksMove": false, "standardOffset": "UTC+6", "summerOffset": null }, { "from": 2016, "to": 2016, "clocksMove": true, "standardOffset": "UTC+6", "summerOffset": "UTC+7" }, { "from": 2017, "to": 2027, "clocksMove": false, "standardOffset": "UTC+7", "summerOffset": null } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+8 in summer." }, { "year": 1991, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+7 became the year-round time." }, { "year": 1992, "date": "1991-09-28", "description": "Standard time moved from UTC+7 to UTC+6, a shift of 1 hour." }, { "year": 1992, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+8 in summer." }, { "year": 1993, "date": "1992-09-26", "description": "Standard time moved from UTC+6 to UTC+7, a shift of 1 hour." }, { "year": 2002, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+7 became the year-round time." }, { "year": 2003, "date": "2002-10-26", "description": "Standard time moved from UTC+7 to UTC+6, a shift of 1 hour." }, { "year": 2003, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+7 in summer." }, { "year": 2012, "date": null, "description": "Standard time moved from UTC+6 to UTC+7, a shift of 1 hour." }, { "year": 2012, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+7 became the year-round time." }, { "year": 2015, "date": "2014-10-25", "description": "Standard time moved from UTC+7 to UTC+6, a shift of 1 hour." }, { "year": 2016, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+7 in summer." }, { "year": 2017, "date": null, "description": "Standard time moved from UTC+6 to UTC+7, a shift of 1 hour." }, { "year": 2017, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+7 became the year-round time." } ] }, { "zone": "Asia/Ulaanbaatar", "standardOffset": "UTC+8", "standardOffsetMinutes": 480, "observesDst": false, "dstAdoptedIn": 2015, "dstAbolishedIn": 2017, "unchangedSince": 2017, "eras": [ { "from": 1970, "to": 1977, "clocksMove": false, "standardOffset": "UTC+7", "summerOffset": null }, { "from": 1978, "to": 1982, "clocksMove": false, "standardOffset": "UTC+8", "summerOffset": null }, { "from": 1983, "to": 1998, "clocksMove": true, "standardOffset": "UTC+8", "summerOffset": "UTC+9" }, { "from": 1999, "to": 2000, "clocksMove": false, "standardOffset": "UTC+8", "summerOffset": null }, { "from": 2001, "to": 2006, "clocksMove": true, "standardOffset": "UTC+8", "summerOffset": "UTC+9" }, { "from": 2007, "to": 2014, "clocksMove": false, "standardOffset": "UTC+8", "summerOffset": null }, { "from": 2015, "to": 2016, "clocksMove": true, "standardOffset": "UTC+8", "summerOffset": "UTC+9" }, { "from": 2017, "to": 2027, "clocksMove": false, "standardOffset": "UTC+8", "summerOffset": null } ], "changes": [ { "year": 1978, "date": "1977-12-31", "description": "Standard time moved from UTC+7 to UTC+8, a shift of 1 hour." }, { "year": 1983, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+9 in summer." }, { "year": 1999, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+8 became the year-round time." }, { "year": 2001, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+9 in summer." }, { "year": 2007, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+8 became the year-round time." }, { "year": 2015, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+9 in summer." }, { "year": 2017, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+8 became the year-round time." } ] }, { "zone": "Asia/Ust-Nera", "standardOffset": "UTC+10", "standardOffsetMinutes": 600, "observesDst": false, "dstAdoptedIn": 1992, "dstAbolishedIn": 2012, "unchangedSince": 2015, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+9", "summerOffset": null }, { "from": 1981, "to": 1981, "clocksMove": true, "standardOffset": "UTC+9", "summerOffset": "UTC+12" }, { "from": 1982, "to": 1990, "clocksMove": true, "standardOffset": "UTC+11", "summerOffset": "UTC+12" }, { "from": 1991, "to": 1991, "clocksMove": false, "standardOffset": "UTC+11", "summerOffset": null }, { "from": 1992, "to": 1992, "clocksMove": true, "standardOffset": "UTC+10", "summerOffset": "UTC+12" }, { "from": 1993, "to": 2011, "clocksMove": true, "standardOffset": "UTC+11", "summerOffset": "UTC+12" }, { "from": 2012, "to": 2014, "clocksMove": false, "standardOffset": "UTC+11", "summerOffset": null }, { "from": 2015, "to": 2027, "clocksMove": false, "standardOffset": "UTC+10", "summerOffset": null } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+12 in summer." }, { "year": 1982, "date": "1981-09-30", "description": "Standard time moved from UTC+9 to UTC+11, a shift of 2 hours." }, { "year": 1991, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+11 became the year-round time." }, { "year": 1992, "date": "1991-09-28", "description": "Standard time moved from UTC+11 to UTC+10, a shift of 1 hour." }, { "year": 1992, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+12 in summer." }, { "year": 1993, "date": "1992-09-26", "description": "Standard time moved from UTC+10 to UTC+11, a shift of 1 hour." }, { "year": 2012, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+11 became the year-round time." }, { "year": 2015, "date": "2014-10-25", "description": "Standard time moved from UTC+11 to UTC+10, a shift of 1 hour." } ] }, { "zone": "Asia/Vladivostok", "standardOffset": "UTC+10", "standardOffsetMinutes": 600, "observesDst": false, "dstAdoptedIn": 1992, "dstAbolishedIn": 2012, "unchangedSince": 2015, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+10", "summerOffset": null }, { "from": 1981, "to": 1990, "clocksMove": true, "standardOffset": "UTC+10", "summerOffset": "UTC+11" }, { "from": 1991, "to": 1991, "clocksMove": false, "standardOffset": "UTC+10", "summerOffset": null }, { "from": 1992, "to": 1992, "clocksMove": true, "standardOffset": "UTC+9", "summerOffset": "UTC+11" }, { "from": 1993, "to": 2011, "clocksMove": true, "standardOffset": "UTC+10", "summerOffset": "UTC+11" }, { "from": 2012, "to": 2014, "clocksMove": false, "standardOffset": "UTC+11", "summerOffset": null }, { "from": 2015, "to": 2027, "clocksMove": false, "standardOffset": "UTC+10", "summerOffset": null } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+11 in summer." }, { "year": 1991, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+10 became the year-round time." }, { "year": 1992, "date": "1991-09-28", "description": "Standard time moved from UTC+10 to UTC+9, a shift of 1 hour." }, { "year": 1992, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+11 in summer." }, { "year": 1993, "date": "1992-09-26", "description": "Standard time moved from UTC+9 to UTC+10, a shift of 1 hour." }, { "year": 2012, "date": null, "description": "Standard time moved from UTC+10 to UTC+11, a shift of 1 hour." }, { "year": 2012, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+11 became the year-round time." }, { "year": 2015, "date": "2014-10-25", "description": "Standard time moved from UTC+11 to UTC+10, a shift of 1 hour." } ] }, { "zone": "Asia/Yakutsk", "standardOffset": "UTC+9", "standardOffsetMinutes": 540, "observesDst": false, "dstAdoptedIn": 1992, "dstAbolishedIn": 2012, "unchangedSince": 2015, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+9", "summerOffset": null }, { "from": 1981, "to": 1990, "clocksMove": true, "standardOffset": "UTC+9", "summerOffset": "UTC+10" }, { "from": 1991, "to": 1991, "clocksMove": false, "standardOffset": "UTC+9", "summerOffset": null }, { "from": 1992, "to": 1992, "clocksMove": true, "standardOffset": "UTC+8", "summerOffset": "UTC+10" }, { "from": 1993, "to": 2011, "clocksMove": true, "standardOffset": "UTC+9", "summerOffset": "UTC+10" }, { "from": 2012, "to": 2014, "clocksMove": false, "standardOffset": "UTC+10", "summerOffset": null }, { "from": 2015, "to": 2027, "clocksMove": false, "standardOffset": "UTC+9", "summerOffset": null } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+10 in summer." }, { "year": 1991, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+9 became the year-round time." }, { "year": 1992, "date": "1991-09-28", "description": "Standard time moved from UTC+9 to UTC+8, a shift of 1 hour." }, { "year": 1992, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+10 in summer." }, { "year": 1993, "date": "1992-09-26", "description": "Standard time moved from UTC+8 to UTC+9, a shift of 1 hour." }, { "year": 2012, "date": null, "description": "Standard time moved from UTC+9 to UTC+10, a shift of 1 hour." }, { "year": 2012, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+10 became the year-round time." }, { "year": 2015, "date": "2014-10-25", "description": "Standard time moved from UTC+10 to UTC+9, a shift of 1 hour." } ] }, { "zone": "Asia/Yekaterinburg", "standardOffset": "UTC+5", "standardOffsetMinutes": 300, "observesDst": false, "dstAdoptedIn": 1992, "dstAbolishedIn": 2012, "unchangedSince": 2015, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+5", "summerOffset": null }, { "from": 1981, "to": 1990, "clocksMove": true, "standardOffset": "UTC+5", "summerOffset": "UTC+6" }, { "from": 1991, "to": 1991, "clocksMove": false, "standardOffset": "UTC+5", "summerOffset": null }, { "from": 1992, "to": 1992, "clocksMove": true, "standardOffset": "UTC+4", "summerOffset": "UTC+6" }, { "from": 1993, "to": 2011, "clocksMove": true, "standardOffset": "UTC+5", "summerOffset": "UTC+6" }, { "from": 2012, "to": 2014, "clocksMove": false, "standardOffset": "UTC+6", "summerOffset": null }, { "from": 2015, "to": 2027, "clocksMove": false, "standardOffset": "UTC+5", "summerOffset": null } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+6 in summer." }, { "year": 1991, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+5 became the year-round time." }, { "year": 1992, "date": "1991-09-28", "description": "Standard time moved from UTC+5 to UTC+4, a shift of 1 hour." }, { "year": 1992, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+6 in summer." }, { "year": 1993, "date": "1992-09-26", "description": "Standard time moved from UTC+4 to UTC+5, a shift of 1 hour." }, { "year": 2012, "date": null, "description": "Standard time moved from UTC+5 to UTC+6, a shift of 1 hour." }, { "year": 2012, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+6 became the year-round time." }, { "year": 2015, "date": "2014-10-25", "description": "Standard time moved from UTC+6 to UTC+5, a shift of 1 hour." } ] }, { "zone": "Asia/Yerevan", "standardOffset": "UTC+4", "standardOffsetMinutes": 240, "observesDst": false, "dstAdoptedIn": 1997, "dstAbolishedIn": 2012, "unchangedSince": 2012, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+4", "summerOffset": null }, { "from": 1981, "to": 1990, "clocksMove": true, "standardOffset": "UTC+4", "summerOffset": "UTC+5" }, { "from": 1991, "to": 1991, "clocksMove": false, "standardOffset": "UTC+4", "summerOffset": null }, { "from": 1992, "to": 1995, "clocksMove": true, "standardOffset": "UTC+3", "summerOffset": "UTC+4" }, { "from": 1996, "to": 1996, "clocksMove": false, "standardOffset": "UTC+4", "summerOffset": null }, { "from": 1997, "to": 2011, "clocksMove": true, "standardOffset": "UTC+4", "summerOffset": "UTC+5" }, { "from": 2012, "to": 2027, "clocksMove": false, "standardOffset": "UTC+4", "summerOffset": null } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+5 in summer." }, { "year": 1991, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+4 became the year-round time." }, { "year": 1992, "date": "1991-09-28", "description": "Standard time moved from UTC+4 to UTC+3, a shift of 1 hour." }, { "year": 1992, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+4 in summer." }, { "year": 1996, "date": null, "description": "Standard time moved from UTC+3 to UTC+4, a shift of 1 hour." }, { "year": 1996, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+4 became the year-round time." }, { "year": 1997, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+5 in summer." }, { "year": 2012, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+4 became the year-round time." } ] }, { "zone": "Atlantic/Azores", "standardOffset": "UTC−1", "standardOffsetMinutes": -60, "observesDst": true, "dstAdoptedIn": 1994, "dstAbolishedIn": null, "unchangedSince": 1994, "eras": [ { "from": 1970, "to": 1981, "clocksMove": false, "standardOffset": "UTC−1", "summerOffset": null }, { "from": 1982, "to": 1992, "clocksMove": true, "standardOffset": "UTC−1", "summerOffset": "UTC+0" }, { "from": 1993, "to": 1993, "clocksMove": false, "standardOffset": "UTC+0", "summerOffset": null }, { "from": 1994, "to": 2027, "clocksMove": true, "standardOffset": "UTC−1", "summerOffset": "UTC+0" } ], "changes": [ { "year": 1982, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+0 in summer." }, { "year": 1993, "date": "1992-09-27", "description": "Standard time moved from UTC−1 to UTC+0, a shift of 1 hour." }, { "year": 1993, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+0 became the year-round time." }, { "year": 1994, "date": "1993-06-17", "description": "Standard time moved from UTC+0 to UTC−1, a shift of 1 hour." }, { "year": 1994, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+0 in summer." } ] }, { "zone": "Atlantic/Canary", "standardOffset": "UTC+0", "standardOffsetMinutes": 0, "observesDst": true, "dstAdoptedIn": 1980, "dstAbolishedIn": null, "unchangedSince": 1980, "eras": [ { "from": 1970, "to": 1979, "clocksMove": false, "standardOffset": "UTC+0", "summerOffset": null }, { "from": 1980, "to": 2027, "clocksMove": true, "standardOffset": "UTC+0", "summerOffset": "UTC+1" } ], "changes": [ { "year": 1980, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+1 in summer." } ] }, { "zone": "Atlantic/Cape_Verde", "standardOffset": "UTC−1", "standardOffsetMinutes": -60, "observesDst": false, "dstAdoptedIn": null, "dstAbolishedIn": null, "unchangedSince": 1976, "eras": [ { "from": 1970, "to": 1975, "clocksMove": false, "standardOffset": "UTC−2", "summerOffset": null }, { "from": 1976, "to": 2027, "clocksMove": false, "standardOffset": "UTC−1", "summerOffset": null } ], "changes": [ { "year": 1976, "date": "1975-11-25", "description": "Standard time moved from UTC−2 to UTC−1, a shift of 1 hour." } ] }, { "zone": "Atlantic/Stanley", "standardOffset": "UTC−3", "standardOffsetMinutes": -180, "observesDst": false, "dstAdoptedIn": 1983, "dstAbolishedIn": 2011, "unchangedSince": 2011, "eras": [ { "from": 1970, "to": 1982, "clocksMove": false, "standardOffset": "UTC−4", "summerOffset": null }, { "from": 1983, "to": 1983, "clocksMove": true, "standardOffset": "UTC−4", "summerOffset": "UTC−3" }, { "from": 1984, "to": 1985, "clocksMove": true, "standardOffset": "UTC−3", "summerOffset": "UTC−2" }, { "from": 1986, "to": 2010, "clocksMove": true, "standardOffset": "UTC−4", "summerOffset": "UTC−3" }, { "from": 2011, "to": 2027, "clocksMove": false, "standardOffset": "UTC−3", "summerOffset": null } ], "changes": [ { "year": 1983, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−3 in summer." }, { "year": 1984, "date": "1983-09-25", "description": "Standard time moved from UTC−4 to UTC−3, a shift of 1 hour." }, { "year": 1986, "date": "1986-04-20", "description": "Standard time moved from UTC−3 to UTC−4, a shift of 1 hour." }, { "year": 2011, "date": "2010-09-05", "description": "Standard time moved from UTC−4 to UTC−3, a shift of 1 hour." }, { "year": 2011, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−3 became the year-round time." } ] }, { "zone": "Australia/Adelaide", "standardOffset": "UTC+9:30", "standardOffsetMinutes": 570, "observesDst": true, "dstAdoptedIn": 1972, "dstAbolishedIn": null, "unchangedSince": 1972, "eras": [ { "from": 1970, "to": 1971, "clocksMove": false, "standardOffset": "UTC+9:30", "summerOffset": null }, { "from": 1972, "to": 2027, "clocksMove": true, "standardOffset": "UTC+9:30", "summerOffset": "UTC+10:30" } ], "changes": [ { "year": 1972, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+10:30 in summer." } ] }, { "zone": "Australia/Brisbane", "standardOffset": "UTC+10", "standardOffsetMinutes": 600, "observesDst": false, "dstAdoptedIn": 1990, "dstAbolishedIn": 1993, "unchangedSince": 1993, "eras": [ { "from": 1970, "to": 1971, "clocksMove": false, "standardOffset": "UTC+10", "summerOffset": null }, { "from": 1972, "to": 1972, "clocksMove": true, "standardOffset": "UTC+10", "summerOffset": "UTC+11" }, { "from": 1973, "to": 1989, "clocksMove": false, "standardOffset": "UTC+10", "summerOffset": null }, { "from": 1990, "to": 1992, "clocksMove": true, "standardOffset": "UTC+10", "summerOffset": "UTC+11" }, { "from": 1993, "to": 2027, "clocksMove": false, "standardOffset": "UTC+10", "summerOffset": null } ], "changes": [ { "year": 1972, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+11 in summer." }, { "year": 1973, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+10 became the year-round time." }, { "year": 1990, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+11 in summer." }, { "year": 1993, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+10 became the year-round time." } ] }, { "zone": "Australia/Lord_Howe", "standardOffset": "UTC+10:30", "standardOffsetMinutes": 630, "observesDst": true, "dstAdoptedIn": 1981, "dstAbolishedIn": null, "unchangedSince": 1982, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+10", "summerOffset": null }, { "from": 1981, "to": 1981, "clocksMove": true, "standardOffset": "UTC+10", "summerOffset": "UTC+10:30" }, { "from": 1982, "to": 2027, "clocksMove": true, "standardOffset": "UTC+10:30", "summerOffset": "UTC+11:30" } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+10:30 in summer." }, { "year": 1982, "date": "1981-10-24", "description": "Standard time moved from UTC+10 to UTC+10:30, a shift of 30 minutes." } ] }, { "zone": "Australia/Melbourne", "standardOffset": "UTC+10", "standardOffsetMinutes": 600, "observesDst": true, "dstAdoptedIn": 1972, "dstAbolishedIn": null, "unchangedSince": 1972, "eras": [ { "from": 1970, "to": 1971, "clocksMove": false, "standardOffset": "UTC+10", "summerOffset": null }, { "from": 1972, "to": 2027, "clocksMove": true, "standardOffset": "UTC+10", "summerOffset": "UTC+11" } ], "changes": [ { "year": 1972, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+11 in summer." } ] }, { "zone": "Australia/Perth", "standardOffset": "UTC+8", "standardOffsetMinutes": 480, "observesDst": false, "dstAdoptedIn": 2007, "dstAbolishedIn": 2010, "unchangedSince": 2010, "eras": [ { "from": 1970, "to": 1974, "clocksMove": false, "standardOffset": "UTC+8", "summerOffset": null }, { "from": 1975, "to": 1975, "clocksMove": true, "standardOffset": "UTC+8", "summerOffset": "UTC+9" }, { "from": 1976, "to": 1983, "clocksMove": false, "standardOffset": "UTC+8", "summerOffset": null }, { "from": 1984, "to": 1984, "clocksMove": true, "standardOffset": "UTC+8", "summerOffset": "UTC+9" }, { "from": 1985, "to": 1991, "clocksMove": false, "standardOffset": "UTC+8", "summerOffset": null }, { "from": 1992, "to": 1992, "clocksMove": true, "standardOffset": "UTC+8", "summerOffset": "UTC+9" }, { "from": 1993, "to": 2006, "clocksMove": false, "standardOffset": "UTC+8", "summerOffset": null }, { "from": 2007, "to": 2009, "clocksMove": true, "standardOffset": "UTC+8", "summerOffset": "UTC+9" }, { "from": 2010, "to": 2027, "clocksMove": false, "standardOffset": "UTC+8", "summerOffset": null } ], "changes": [ { "year": 1975, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+9 in summer." }, { "year": 1976, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+8 became the year-round time." }, { "year": 1984, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+9 in summer." }, { "year": 1985, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+8 became the year-round time." }, { "year": 1992, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+9 in summer." }, { "year": 1993, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+8 became the year-round time." }, { "year": 2007, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+9 in summer." }, { "year": 2010, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+8 became the year-round time." } ] }, { "zone": "Australia/Sydney", "standardOffset": "UTC+10", "standardOffsetMinutes": 600, "observesDst": true, "dstAdoptedIn": 1972, "dstAbolishedIn": null, "unchangedSince": 1972, "eras": [ { "from": 1970, "to": 1971, "clocksMove": false, "standardOffset": "UTC+10", "summerOffset": null }, { "from": 1972, "to": 2027, "clocksMove": true, "standardOffset": "UTC+10", "summerOffset": "UTC+11" } ], "changes": [ { "year": 1972, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+11 in summer." } ] }, { "zone": "Europe/Amsterdam", "standardOffset": "UTC+1", "standardOffsetMinutes": 60, "observesDst": true, "dstAdoptedIn": 1977, "dstAbolishedIn": null, "unchangedSince": 1977, "eras": [ { "from": 1970, "to": 1976, "clocksMove": false, "standardOffset": "UTC+1", "summerOffset": null }, { "from": 1977, "to": 2027, "clocksMove": true, "standardOffset": "UTC+1", "summerOffset": "UTC+2" } ], "changes": [ { "year": 1977, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+2 in summer." } ] }, { "zone": "Europe/Astrakhan", "standardOffset": "UTC+4", "standardOffsetMinutes": 240, "observesDst": false, "dstAdoptedIn": 2016, "dstAbolishedIn": 2017, "unchangedSince": 2017, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+4", "summerOffset": null }, { "from": 1981, "to": 1988, "clocksMove": true, "standardOffset": "UTC+4", "summerOffset": "UTC+5" }, { "from": 1989, "to": 1989, "clocksMove": false, "standardOffset": "UTC+4", "summerOffset": null }, { "from": 1990, "to": 1991, "clocksMove": true, "standardOffset": "UTC+3", "summerOffset": "UTC+4" }, { "from": 1992, "to": 1992, "clocksMove": false, "standardOffset": "UTC+4", "summerOffset": null }, { "from": 1993, "to": 2011, "clocksMove": true, "standardOffset": "UTC+3", "summerOffset": "UTC+4" }, { "from": 2012, "to": 2014, "clocksMove": false, "standardOffset": "UTC+4", "summerOffset": null }, { "from": 2015, "to": 2015, "clocksMove": false, "standardOffset": "UTC+3", "summerOffset": null }, { "from": 2016, "to": 2016, "clocksMove": true, "standardOffset": "UTC+3", "summerOffset": "UTC+4" }, { "from": 2017, "to": 2027, "clocksMove": false, "standardOffset": "UTC+4", "summerOffset": null } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+5 in summer." }, { "year": 1989, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+4 became the year-round time." }, { "year": 1990, "date": "1989-09-23", "description": "Standard time moved from UTC+4 to UTC+3, a shift of 1 hour." }, { "year": 1990, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+4 in summer." }, { "year": 1992, "date": "1992-09-26", "description": "Standard time moved from UTC+3 to UTC+4, a shift of 1 hour." }, { "year": 1992, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+4 became the year-round time." }, { "year": 1993, "date": "1992-09-26", "description": "Standard time moved from UTC+4 to UTC+3, a shift of 1 hour." }, { "year": 1993, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+4 in summer." }, { "year": 2012, "date": null, "description": "Standard time moved from UTC+3 to UTC+4, a shift of 1 hour." }, { "year": 2012, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+4 became the year-round time." }, { "year": 2015, "date": "2014-10-25", "description": "Standard time moved from UTC+4 to UTC+3, a shift of 1 hour." }, { "year": 2016, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+4 in summer." }, { "year": 2017, "date": null, "description": "Standard time moved from UTC+3 to UTC+4, a shift of 1 hour." }, { "year": 2017, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+4 became the year-round time." } ] }, { "zone": "Europe/Athens", "standardOffset": "UTC+2", "standardOffsetMinutes": 120, "observesDst": true, "dstAdoptedIn": 1975, "dstAbolishedIn": null, "unchangedSince": 1975, "eras": [ { "from": 1970, "to": 1974, "clocksMove": false, "standardOffset": "UTC+2", "summerOffset": null }, { "from": 1975, "to": 2027, "clocksMove": true, "standardOffset": "UTC+2", "summerOffset": "UTC+3" } ], "changes": [ { "year": 1975, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+3 in summer." } ] }, { "zone": "Europe/Belgrade", "standardOffset": "UTC+1", "standardOffsetMinutes": 60, "observesDst": true, "dstAdoptedIn": 1983, "dstAbolishedIn": null, "unchangedSince": 1983, "eras": [ { "from": 1970, "to": 1982, "clocksMove": false, "standardOffset": "UTC+1", "summerOffset": null }, { "from": 1983, "to": 2027, "clocksMove": true, "standardOffset": "UTC+1", "summerOffset": "UTC+2" } ], "changes": [ { "year": 1983, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+2 in summer." } ] }, { "zone": "Europe/Berlin", "standardOffset": "UTC+1", "standardOffsetMinutes": 60, "observesDst": true, "dstAdoptedIn": 1980, "dstAbolishedIn": null, "unchangedSince": 1980, "eras": [ { "from": 1970, "to": 1979, "clocksMove": false, "standardOffset": "UTC+1", "summerOffset": null }, { "from": 1980, "to": 2027, "clocksMove": true, "standardOffset": "UTC+1", "summerOffset": "UTC+2" } ], "changes": [ { "year": 1980, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+2 in summer." } ] }, { "zone": "Europe/Brussels", "standardOffset": "UTC+1", "standardOffsetMinutes": 60, "observesDst": true, "dstAdoptedIn": 1977, "dstAbolishedIn": null, "unchangedSince": 1977, "eras": [ { "from": 1970, "to": 1976, "clocksMove": false, "standardOffset": "UTC+1", "summerOffset": null }, { "from": 1977, "to": 2027, "clocksMove": true, "standardOffset": "UTC+1", "summerOffset": "UTC+2" } ], "changes": [ { "year": 1977, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+2 in summer." } ] }, { "zone": "Europe/Bucharest", "standardOffset": "UTC+2", "standardOffsetMinutes": 120, "observesDst": true, "dstAdoptedIn": 1979, "dstAbolishedIn": null, "unchangedSince": 1979, "eras": [ { "from": 1970, "to": 1978, "clocksMove": false, "standardOffset": "UTC+2", "summerOffset": null }, { "from": 1979, "to": 2027, "clocksMove": true, "standardOffset": "UTC+2", "summerOffset": "UTC+3" } ], "changes": [ { "year": 1979, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+3 in summer." } ] }, { "zone": "Europe/Budapest", "standardOffset": "UTC+1", "standardOffsetMinutes": 60, "observesDst": true, "dstAdoptedIn": 1980, "dstAbolishedIn": null, "unchangedSince": 1980, "eras": [ { "from": 1970, "to": 1979, "clocksMove": false, "standardOffset": "UTC+1", "summerOffset": null }, { "from": 1980, "to": 2027, "clocksMove": true, "standardOffset": "UTC+1", "summerOffset": "UTC+2" } ], "changes": [ { "year": 1980, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+2 in summer." } ] }, { "zone": "Europe/Chisinau", "standardOffset": "UTC+2", "standardOffsetMinutes": 120, "observesDst": true, "dstAdoptedIn": 1991, "dstAbolishedIn": null, "unchangedSince": 1991, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+3", "summerOffset": null }, { "from": 1981, "to": 1989, "clocksMove": true, "standardOffset": "UTC+3", "summerOffset": "UTC+4" }, { "from": 1990, "to": 1990, "clocksMove": false, "standardOffset": "UTC+3", "summerOffset": null }, { "from": 1991, "to": 2027, "clocksMove": true, "standardOffset": "UTC+2", "summerOffset": "UTC+3" } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+4 in summer." }, { "year": 1990, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+3 became the year-round time." }, { "year": 1991, "date": "1990-09-30", "description": "Standard time moved from UTC+3 to UTC+2, a shift of 1 hour." }, { "year": 1991, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+3 in summer." } ] }, { "zone": "Europe/Copenhagen", "standardOffset": "UTC+1", "standardOffsetMinutes": 60, "observesDst": true, "dstAdoptedIn": 1980, "dstAbolishedIn": null, "unchangedSince": 1980, "eras": [ { "from": 1970, "to": 1979, "clocksMove": false, "standardOffset": "UTC+1", "summerOffset": null }, { "from": 1980, "to": 2027, "clocksMove": true, "standardOffset": "UTC+1", "summerOffset": "UTC+2" } ], "changes": [ { "year": 1980, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+2 in summer." } ] }, { "zone": "Europe/Dublin", "standardOffset": "UTC+0", "standardOffsetMinutes": 0, "observesDst": true, "dstAdoptedIn": 1972, "dstAbolishedIn": null, "unchangedSince": 1972, "eras": [ { "from": 1970, "to": 1971, "clocksMove": false, "standardOffset": "UTC+1", "summerOffset": null }, { "from": 1972, "to": 2027, "clocksMove": true, "standardOffset": "UTC+0", "summerOffset": "UTC+1" } ], "changes": [ { "year": 1972, "date": "1971-10-31", "description": "Standard time moved from UTC+1 to UTC+0, a shift of 1 hour." }, { "year": 1972, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+1 in summer." } ] }, { "zone": "Europe/Guernsey", "standardOffset": "UTC+0", "standardOffsetMinutes": 0, "observesDst": true, "dstAdoptedIn": 1972, "dstAbolishedIn": null, "unchangedSince": 1972, "eras": [ { "from": 1970, "to": 1971, "clocksMove": false, "standardOffset": "UTC+1", "summerOffset": null }, { "from": 1972, "to": 2027, "clocksMove": true, "standardOffset": "UTC+0", "summerOffset": "UTC+1" } ], "changes": [ { "year": 1972, "date": "1971-10-31", "description": "Standard time moved from UTC+1 to UTC+0, a shift of 1 hour." }, { "year": 1972, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+1 in summer." } ] }, { "zone": "Europe/Helsinki", "standardOffset": "UTC+2", "standardOffsetMinutes": 120, "observesDst": true, "dstAdoptedIn": 1981, "dstAbolishedIn": null, "unchangedSince": 1981, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+2", "summerOffset": null }, { "from": 1981, "to": 2027, "clocksMove": true, "standardOffset": "UTC+2", "summerOffset": "UTC+3" } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+3 in summer." } ] }, { "zone": "Europe/Isle_of_Man", "standardOffset": "UTC+0", "standardOffsetMinutes": 0, "observesDst": true, "dstAdoptedIn": 1972, "dstAbolishedIn": null, "unchangedSince": 1972, "eras": [ { "from": 1970, "to": 1971, "clocksMove": false, "standardOffset": "UTC+1", "summerOffset": null }, { "from": 1972, "to": 2027, "clocksMove": true, "standardOffset": "UTC+0", "summerOffset": "UTC+1" } ], "changes": [ { "year": 1972, "date": "1971-10-31", "description": "Standard time moved from UTC+1 to UTC+0, a shift of 1 hour." }, { "year": 1972, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+1 in summer." } ] }, { "zone": "Europe/Istanbul", "standardOffset": "UTC+3", "standardOffsetMinutes": 180, "observesDst": false, "dstAdoptedIn": 1985, "dstAbolishedIn": 2017, "unchangedSince": 2017, "eras": [ { "from": 1970, "to": 1972, "clocksMove": false, "standardOffset": "UTC+2", "summerOffset": null }, { "from": 1973, "to": 1978, "clocksMove": true, "standardOffset": "UTC+2", "summerOffset": "UTC+3" }, { "from": 1979, "to": 1984, "clocksMove": false, "standardOffset": "UTC+3", "summerOffset": null }, { "from": 1985, "to": 2016, "clocksMove": true, "standardOffset": "UTC+2", "summerOffset": "UTC+3" }, { "from": 2017, "to": 2027, "clocksMove": false, "standardOffset": "UTC+3", "summerOffset": null } ], "changes": [ { "year": 1973, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+3 in summer." }, { "year": 1979, "date": null, "description": "Standard time moved from UTC+2 to UTC+3, a shift of 1 hour." }, { "year": 1979, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+3 became the year-round time." }, { "year": 1985, "date": "1984-10-31", "description": "Standard time moved from UTC+3 to UTC+2, a shift of 1 hour." }, { "year": 1985, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+3 in summer." }, { "year": 2017, "date": null, "description": "Standard time moved from UTC+2 to UTC+3, a shift of 1 hour." }, { "year": 2017, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+3 became the year-round time." } ] }, { "zone": "Europe/Jersey", "standardOffset": "UTC+0", "standardOffsetMinutes": 0, "observesDst": true, "dstAdoptedIn": 1972, "dstAbolishedIn": null, "unchangedSince": 1972, "eras": [ { "from": 1970, "to": 1971, "clocksMove": false, "standardOffset": "UTC+1", "summerOffset": null }, { "from": 1972, "to": 2027, "clocksMove": true, "standardOffset": "UTC+0", "summerOffset": "UTC+1" } ], "changes": [ { "year": 1972, "date": "1971-10-31", "description": "Standard time moved from UTC+1 to UTC+0, a shift of 1 hour." }, { "year": 1972, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+1 in summer." } ] }, { "zone": "Europe/Kaliningrad", "standardOffset": "UTC+2", "standardOffsetMinutes": 120, "observesDst": false, "dstAdoptedIn": 1990, "dstAbolishedIn": 2012, "unchangedSince": 2015, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+3", "summerOffset": null }, { "from": 1981, "to": 1988, "clocksMove": true, "standardOffset": "UTC+3", "summerOffset": "UTC+4" }, { "from": 1989, "to": 1989, "clocksMove": false, "standardOffset": "UTC+3", "summerOffset": null }, { "from": 1990, "to": 2011, "clocksMove": true, "standardOffset": "UTC+2", "summerOffset": "UTC+3" }, { "from": 2012, "to": 2014, "clocksMove": false, "standardOffset": "UTC+3", "summerOffset": null }, { "from": 2015, "to": 2027, "clocksMove": false, "standardOffset": "UTC+2", "summerOffset": null } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+4 in summer." }, { "year": 1989, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+3 became the year-round time." }, { "year": 1990, "date": "1989-09-24", "description": "Standard time moved from UTC+3 to UTC+2, a shift of 1 hour." }, { "year": 1990, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+3 in summer." }, { "year": 2012, "date": null, "description": "Standard time moved from UTC+2 to UTC+3, a shift of 1 hour." }, { "year": 2012, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+3 became the year-round time." }, { "year": 2015, "date": "2014-10-25", "description": "Standard time moved from UTC+3 to UTC+2, a shift of 1 hour." } ] }, { "zone": "Europe/Kiev", "standardOffset": "UTC+2", "standardOffsetMinutes": 120, "observesDst": true, "dstAdoptedIn": 1992, "dstAbolishedIn": null, "unchangedSince": 1992, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+3", "summerOffset": null }, { "from": 1981, "to": 1989, "clocksMove": true, "standardOffset": "UTC+3", "summerOffset": "UTC+4" }, { "from": 1990, "to": 1991, "clocksMove": false, "standardOffset": "UTC+3", "summerOffset": null }, { "from": 1992, "to": 2027, "clocksMove": true, "standardOffset": "UTC+2", "summerOffset": "UTC+3" } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+4 in summer." }, { "year": 1990, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+3 became the year-round time." }, { "year": 1992, "date": "1991-09-29", "description": "Standard time moved from UTC+3 to UTC+2, a shift of 1 hour." }, { "year": 1992, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+3 in summer." } ] }, { "zone": "Europe/Kirov", "standardOffset": "UTC+3", "standardOffsetMinutes": 180, "observesDst": false, "dstAdoptedIn": 1993, "dstAbolishedIn": 2012, "unchangedSince": 2015, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+4", "summerOffset": null }, { "from": 1981, "to": 1988, "clocksMove": true, "standardOffset": "UTC+4", "summerOffset": "UTC+5" }, { "from": 1989, "to": 1989, "clocksMove": false, "standardOffset": "UTC+4", "summerOffset": null }, { "from": 1990, "to": 1991, "clocksMove": true, "standardOffset": "UTC+3", "summerOffset": "UTC+4" }, { "from": 1992, "to": 1992, "clocksMove": false, "standardOffset": "UTC+4", "summerOffset": null }, { "from": 1993, "to": 2011, "clocksMove": true, "standardOffset": "UTC+3", "summerOffset": "UTC+4" }, { "from": 2012, "to": 2014, "clocksMove": false, "standardOffset": "UTC+4", "summerOffset": null }, { "from": 2015, "to": 2027, "clocksMove": false, "standardOffset": "UTC+3", "summerOffset": null } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+5 in summer." }, { "year": 1989, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+4 became the year-round time." }, { "year": 1990, "date": "1989-09-23", "description": "Standard time moved from UTC+4 to UTC+3, a shift of 1 hour." }, { "year": 1990, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+4 in summer." }, { "year": 1992, "date": "1992-09-26", "description": "Standard time moved from UTC+3 to UTC+4, a shift of 1 hour." }, { "year": 1992, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+4 became the year-round time." }, { "year": 1993, "date": "1992-09-26", "description": "Standard time moved from UTC+4 to UTC+3, a shift of 1 hour." }, { "year": 1993, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+4 in summer." }, { "year": 2012, "date": null, "description": "Standard time moved from UTC+3 to UTC+4, a shift of 1 hour." }, { "year": 2012, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+4 became the year-round time." }, { "year": 2015, "date": "2014-10-25", "description": "Standard time moved from UTC+4 to UTC+3, a shift of 1 hour." } ] }, { "zone": "Europe/Lisbon", "standardOffset": "UTC+0", "standardOffsetMinutes": 0, "observesDst": true, "dstAdoptedIn": 1997, "dstAbolishedIn": null, "unchangedSince": 1997, "eras": [ { "from": 1970, "to": 1976, "clocksMove": false, "standardOffset": "UTC+1", "summerOffset": null }, { "from": 1977, "to": 1992, "clocksMove": true, "standardOffset": "UTC+0", "summerOffset": "UTC+1" }, { "from": 1993, "to": 1995, "clocksMove": true, "standardOffset": "UTC+1", "summerOffset": "UTC+2" }, { "from": 1996, "to": 1996, "clocksMove": false, "standardOffset": "UTC+1", "summerOffset": null }, { "from": 1997, "to": 2027, "clocksMove": true, "standardOffset": "UTC+0", "summerOffset": "UTC+1" } ], "changes": [ { "year": 1977, "date": "1976-09-26", "description": "Standard time moved from UTC+1 to UTC+0, a shift of 1 hour." }, { "year": 1977, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+1 in summer." }, { "year": 1993, "date": "1993-03-28", "description": "Standard time moved from UTC+0 to UTC+1, a shift of 1 hour." }, { "year": 1996, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+1 became the year-round time." }, { "year": 1997, "date": "1996-10-27", "description": "Standard time moved from UTC+1 to UTC+0, a shift of 1 hour." }, { "year": 1997, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+1 in summer." } ] }, { "zone": "Europe/London", "standardOffset": "UTC+0", "standardOffsetMinutes": 0, "observesDst": true, "dstAdoptedIn": 1972, "dstAbolishedIn": null, "unchangedSince": 1972, "eras": [ { "from": 1970, "to": 1971, "clocksMove": false, "standardOffset": "UTC+1", "summerOffset": null }, { "from": 1972, "to": 2027, "clocksMove": true, "standardOffset": "UTC+0", "summerOffset": "UTC+1" } ], "changes": [ { "year": 1972, "date": "1971-10-31", "description": "Standard time moved from UTC+1 to UTC+0, a shift of 1 hour." }, { "year": 1972, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+1 in summer." } ] }, { "zone": "Europe/Madrid", "standardOffset": "UTC+1", "standardOffsetMinutes": 60, "observesDst": true, "dstAdoptedIn": 1974, "dstAbolishedIn": null, "unchangedSince": 1974, "eras": [ { "from": 1970, "to": 1973, "clocksMove": false, "standardOffset": "UTC+1", "summerOffset": null }, { "from": 1974, "to": 2027, "clocksMove": true, "standardOffset": "UTC+1", "summerOffset": "UTC+2" } ], "changes": [ { "year": 1974, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+2 in summer." } ] }, { "zone": "Europe/Minsk", "standardOffset": "UTC+3", "standardOffsetMinutes": 180, "observesDst": false, "dstAdoptedIn": 1992, "dstAbolishedIn": 2012, "unchangedSince": 2012, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+3", "summerOffset": null }, { "from": 1981, "to": 1989, "clocksMove": true, "standardOffset": "UTC+3", "summerOffset": "UTC+4" }, { "from": 1990, "to": 1991, "clocksMove": false, "standardOffset": "UTC+3", "summerOffset": null }, { "from": 1992, "to": 2011, "clocksMove": true, "standardOffset": "UTC+2", "summerOffset": "UTC+3" }, { "from": 2012, "to": 2027, "clocksMove": false, "standardOffset": "UTC+3", "summerOffset": null } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+4 in summer." }, { "year": 1990, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+3 became the year-round time." }, { "year": 1992, "date": "1991-09-29", "description": "Standard time moved from UTC+3 to UTC+2, a shift of 1 hour." }, { "year": 1992, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+3 in summer." }, { "year": 2012, "date": null, "description": "Standard time moved from UTC+2 to UTC+3, a shift of 1 hour." }, { "year": 2012, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+3 became the year-round time." } ] }, { "zone": "Europe/Moscow", "standardOffset": "UTC+3", "standardOffsetMinutes": 180, "observesDst": false, "dstAdoptedIn": 1992, "dstAbolishedIn": 2012, "unchangedSince": 2015, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+3", "summerOffset": null }, { "from": 1981, "to": 1990, "clocksMove": true, "standardOffset": "UTC+3", "summerOffset": "UTC+4" }, { "from": 1991, "to": 1991, "clocksMove": false, "standardOffset": "UTC+3", "summerOffset": null }, { "from": 1992, "to": 1992, "clocksMove": true, "standardOffset": "UTC+2", "summerOffset": "UTC+4" }, { "from": 1993, "to": 2011, "clocksMove": true, "standardOffset": "UTC+3", "summerOffset": "UTC+4" }, { "from": 2012, "to": 2014, "clocksMove": false, "standardOffset": "UTC+4", "summerOffset": null }, { "from": 2015, "to": 2027, "clocksMove": false, "standardOffset": "UTC+3", "summerOffset": null } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+4 in summer." }, { "year": 1991, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+3 became the year-round time." }, { "year": 1992, "date": "1991-09-29", "description": "Standard time moved from UTC+3 to UTC+2, a shift of 1 hour." }, { "year": 1992, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+4 in summer." }, { "year": 1993, "date": "1992-09-26", "description": "Standard time moved from UTC+2 to UTC+3, a shift of 1 hour." }, { "year": 2012, "date": null, "description": "Standard time moved from UTC+3 to UTC+4, a shift of 1 hour." }, { "year": 2012, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+4 became the year-round time." }, { "year": 2015, "date": "2014-10-25", "description": "Standard time moved from UTC+4 to UTC+3, a shift of 1 hour." } ] }, { "zone": "Europe/Oslo", "standardOffset": "UTC+1", "standardOffsetMinutes": 60, "observesDst": true, "dstAdoptedIn": 1980, "dstAbolishedIn": null, "unchangedSince": 1980, "eras": [ { "from": 1970, "to": 1979, "clocksMove": false, "standardOffset": "UTC+1", "summerOffset": null }, { "from": 1980, "to": 2027, "clocksMove": true, "standardOffset": "UTC+1", "summerOffset": "UTC+2" } ], "changes": [ { "year": 1980, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+2 in summer." } ] }, { "zone": "Europe/Paris", "standardOffset": "UTC+1", "standardOffsetMinutes": 60, "observesDst": true, "dstAdoptedIn": 1976, "dstAbolishedIn": null, "unchangedSince": 1976, "eras": [ { "from": 1970, "to": 1975, "clocksMove": false, "standardOffset": "UTC+1", "summerOffset": null }, { "from": 1976, "to": 2027, "clocksMove": true, "standardOffset": "UTC+1", "summerOffset": "UTC+2" } ], "changes": [ { "year": 1976, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+2 in summer." } ] }, { "zone": "Europe/Prague", "standardOffset": "UTC+1", "standardOffsetMinutes": 60, "observesDst": true, "dstAdoptedIn": 1979, "dstAbolishedIn": null, "unchangedSince": 1979, "eras": [ { "from": 1970, "to": 1978, "clocksMove": false, "standardOffset": "UTC+1", "summerOffset": null }, { "from": 1979, "to": 2027, "clocksMove": true, "standardOffset": "UTC+1", "summerOffset": "UTC+2" } ], "changes": [ { "year": 1979, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+2 in summer." } ] }, { "zone": "Europe/Riga", "standardOffset": "UTC+2", "standardOffsetMinutes": 120, "observesDst": true, "dstAdoptedIn": 2001, "dstAbolishedIn": null, "unchangedSince": 2001, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+3", "summerOffset": null }, { "from": 1981, "to": 1988, "clocksMove": true, "standardOffset": "UTC+3", "summerOffset": "UTC+4" }, { "from": 1989, "to": 1989, "clocksMove": false, "standardOffset": "UTC+3", "summerOffset": null }, { "from": 1990, "to": 1999, "clocksMove": true, "standardOffset": "UTC+2", "summerOffset": "UTC+3" }, { "from": 2000, "to": 2000, "clocksMove": false, "standardOffset": "UTC+2", "summerOffset": null }, { "from": 2001, "to": 2027, "clocksMove": true, "standardOffset": "UTC+2", "summerOffset": "UTC+3" } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+4 in summer." }, { "year": 1989, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+3 became the year-round time." }, { "year": 1990, "date": "1989-09-24", "description": "Standard time moved from UTC+3 to UTC+2, a shift of 1 hour." }, { "year": 1990, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+3 in summer." }, { "year": 2000, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+2 became the year-round time." }, { "year": 2001, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+3 in summer." } ] }, { "zone": "Europe/Samara", "standardOffset": "UTC+4", "standardOffsetMinutes": 240, "observesDst": false, "dstAdoptedIn": 2011, "dstAbolishedIn": 2012, "unchangedSince": 2012, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+4", "summerOffset": null }, { "from": 1981, "to": 1988, "clocksMove": true, "standardOffset": "UTC+4", "summerOffset": "UTC+5" }, { "from": 1989, "to": 1989, "clocksMove": false, "standardOffset": "UTC+4", "summerOffset": null }, { "from": 1990, "to": 1990, "clocksMove": true, "standardOffset": "UTC+3", "summerOffset": "UTC+4" }, { "from": 1991, "to": 1991, "clocksMove": false, "standardOffset": "UTC+3", "summerOffset": null }, { "from": 1992, "to": 2009, "clocksMove": true, "standardOffset": "UTC+4", "summerOffset": "UTC+5" }, { "from": 2010, "to": 2010, "clocksMove": false, "standardOffset": "UTC+4", "summerOffset": null }, { "from": 2011, "to": 2011, "clocksMove": true, "standardOffset": "UTC+3", "summerOffset": "UTC+4" }, { "from": 2012, "to": 2027, "clocksMove": false, "standardOffset": "UTC+4", "summerOffset": null } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+5 in summer." }, { "year": 1989, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+4 became the year-round time." }, { "year": 1990, "date": "1989-09-23", "description": "Standard time moved from UTC+4 to UTC+3, a shift of 1 hour." }, { "year": 1990, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+4 in summer." }, { "year": 1991, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+3 became the year-round time." }, { "year": 1992, "date": "1991-10-20", "description": "Standard time moved from UTC+3 to UTC+4, a shift of 1 hour." }, { "year": 1992, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+5 in summer." }, { "year": 2010, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+4 became the year-round time." }, { "year": 2011, "date": "2010-10-30", "description": "Standard time moved from UTC+4 to UTC+3, a shift of 1 hour." }, { "year": 2011, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+4 in summer." }, { "year": 2012, "date": null, "description": "Standard time moved from UTC+3 to UTC+4, a shift of 1 hour." }, { "year": 2012, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+4 became the year-round time." } ] }, { "zone": "Europe/Sarajevo", "standardOffset": "UTC+1", "standardOffsetMinutes": 60, "observesDst": true, "dstAdoptedIn": 1983, "dstAbolishedIn": null, "unchangedSince": 1983, "eras": [ { "from": 1970, "to": 1982, "clocksMove": false, "standardOffset": "UTC+1", "summerOffset": null }, { "from": 1983, "to": 2027, "clocksMove": true, "standardOffset": "UTC+1", "summerOffset": "UTC+2" } ], "changes": [ { "year": 1983, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+2 in summer." } ] }, { "zone": "Europe/Saratov", "standardOffset": "UTC+4", "standardOffsetMinutes": 240, "observesDst": false, "dstAdoptedIn": 1993, "dstAbolishedIn": 2012, "unchangedSince": 2017, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+4", "summerOffset": null }, { "from": 1981, "to": 1987, "clocksMove": true, "standardOffset": "UTC+4", "summerOffset": "UTC+5" }, { "from": 1988, "to": 1988, "clocksMove": false, "standardOffset": "UTC+4", "summerOffset": null }, { "from": 1989, "to": 1991, "clocksMove": true, "standardOffset": "UTC+3", "summerOffset": "UTC+4" }, { "from": 1992, "to": 1992, "clocksMove": false, "standardOffset": "UTC+4", "summerOffset": null }, { "from": 1993, "to": 2011, "clocksMove": true, "standardOffset": "UTC+3", "summerOffset": "UTC+4" }, { "from": 2012, "to": 2014, "clocksMove": false, "standardOffset": "UTC+4", "summerOffset": null }, { "from": 2015, "to": 2016, "clocksMove": false, "standardOffset": "UTC+3", "summerOffset": null }, { "from": 2017, "to": 2027, "clocksMove": false, "standardOffset": "UTC+4", "summerOffset": null } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+5 in summer." }, { "year": 1988, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+4 became the year-round time." }, { "year": 1989, "date": "1988-09-24", "description": "Standard time moved from UTC+4 to UTC+3, a shift of 1 hour." }, { "year": 1989, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+4 in summer." }, { "year": 1992, "date": "1992-09-26", "description": "Standard time moved from UTC+3 to UTC+4, a shift of 1 hour." }, { "year": 1992, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+4 became the year-round time." }, { "year": 1993, "date": "1992-09-26", "description": "Standard time moved from UTC+4 to UTC+3, a shift of 1 hour." }, { "year": 1993, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+4 in summer." }, { "year": 2012, "date": null, "description": "Standard time moved from UTC+3 to UTC+4, a shift of 1 hour." }, { "year": 2012, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+4 became the year-round time." }, { "year": 2015, "date": "2014-10-25", "description": "Standard time moved from UTC+4 to UTC+3, a shift of 1 hour." }, { "year": 2017, "date": "2016-12-03", "description": "Standard time moved from UTC+3 to UTC+4, a shift of 1 hour." } ] }, { "zone": "Europe/Simferopol", "standardOffset": "UTC+3", "standardOffsetMinutes": 180, "observesDst": false, "dstAdoptedIn": 1998, "dstAbolishedIn": 2015, "unchangedSince": 2015, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+3", "summerOffset": null }, { "from": 1981, "to": 1989, "clocksMove": true, "standardOffset": "UTC+3", "summerOffset": "UTC+4" }, { "from": 1990, "to": 1990, "clocksMove": true, "standardOffset": "UTC+2", "summerOffset": "UTC+3" }, { "from": 1991, "to": 1991, "clocksMove": false, "standardOffset": "UTC+2", "summerOffset": null }, { "from": 1992, "to": 1994, "clocksMove": true, "standardOffset": "UTC+2", "summerOffset": "UTC+3" }, { "from": 1995, "to": 1996, "clocksMove": true, "standardOffset": "UTC+3", "summerOffset": "UTC+4" }, { "from": 1997, "to": 1997, "clocksMove": false, "standardOffset": "UTC+3", "summerOffset": null }, { "from": 1998, "to": 2014, "clocksMove": true, "standardOffset": "UTC+2", "summerOffset": "UTC+3" }, { "from": 2015, "to": 2027, "clocksMove": false, "standardOffset": "UTC+3", "summerOffset": null } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+4 in summer." }, { "year": 1990, "date": "1989-09-23", "description": "Standard time moved from UTC+3 to UTC+2, a shift of 1 hour." }, { "year": 1991, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+2 became the year-round time." }, { "year": 1992, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+3 in summer." }, { "year": 1995, "date": "1994-09-24", "description": "Standard time moved from UTC+2 to UTC+3, a shift of 1 hour." }, { "year": 1997, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+3 became the year-round time." }, { "year": 1998, "date": "1997-10-26", "description": "Standard time moved from UTC+3 to UTC+2, a shift of 1 hour." }, { "year": 1998, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+3 in summer." }, { "year": 2015, "date": "2014-10-25", "description": "Standard time moved from UTC+2 to UTC+3, a shift of 1 hour." }, { "year": 2015, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+3 became the year-round time." } ] }, { "zone": "Europe/Skopje", "standardOffset": "UTC+1", "standardOffsetMinutes": 60, "observesDst": true, "dstAdoptedIn": 1983, "dstAbolishedIn": null, "unchangedSince": 1983, "eras": [ { "from": 1970, "to": 1982, "clocksMove": false, "standardOffset": "UTC+1", "summerOffset": null }, { "from": 1983, "to": 2027, "clocksMove": true, "standardOffset": "UTC+1", "summerOffset": "UTC+2" } ], "changes": [ { "year": 1983, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+2 in summer." } ] }, { "zone": "Europe/Sofia", "standardOffset": "UTC+2", "standardOffsetMinutes": 120, "observesDst": true, "dstAdoptedIn": 1979, "dstAbolishedIn": null, "unchangedSince": 1979, "eras": [ { "from": 1970, "to": 1978, "clocksMove": false, "standardOffset": "UTC+2", "summerOffset": null }, { "from": 1979, "to": 2027, "clocksMove": true, "standardOffset": "UTC+2", "summerOffset": "UTC+3" } ], "changes": [ { "year": 1979, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+3 in summer." } ] }, { "zone": "Europe/Stockholm", "standardOffset": "UTC+1", "standardOffsetMinutes": 60, "observesDst": true, "dstAdoptedIn": 1980, "dstAbolishedIn": null, "unchangedSince": 1980, "eras": [ { "from": 1970, "to": 1979, "clocksMove": false, "standardOffset": "UTC+1", "summerOffset": null }, { "from": 1980, "to": 2027, "clocksMove": true, "standardOffset": "UTC+1", "summerOffset": "UTC+2" } ], "changes": [ { "year": 1980, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+2 in summer." } ] }, { "zone": "Europe/Tallinn", "standardOffset": "UTC+2", "standardOffsetMinutes": 120, "observesDst": true, "dstAdoptedIn": 2002, "dstAbolishedIn": null, "unchangedSince": 2002, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+3", "summerOffset": null }, { "from": 1981, "to": 1988, "clocksMove": true, "standardOffset": "UTC+3", "summerOffset": "UTC+4" }, { "from": 1989, "to": 1989, "clocksMove": false, "standardOffset": "UTC+3", "summerOffset": null }, { "from": 1990, "to": 1999, "clocksMove": true, "standardOffset": "UTC+2", "summerOffset": "UTC+3" }, { "from": 2000, "to": 2001, "clocksMove": false, "standardOffset": "UTC+2", "summerOffset": null }, { "from": 2002, "to": 2027, "clocksMove": true, "standardOffset": "UTC+2", "summerOffset": "UTC+3" } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+4 in summer." }, { "year": 1989, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+3 became the year-round time." }, { "year": 1990, "date": "1989-09-24", "description": "Standard time moved from UTC+3 to UTC+2, a shift of 1 hour." }, { "year": 1990, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+3 in summer." }, { "year": 2000, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+2 became the year-round time." }, { "year": 2002, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+3 in summer." } ] }, { "zone": "Europe/Tirane", "standardOffset": "UTC+1", "standardOffsetMinutes": 60, "observesDst": true, "dstAdoptedIn": 1974, "dstAbolishedIn": null, "unchangedSince": 1974, "eras": [ { "from": 1970, "to": 1973, "clocksMove": false, "standardOffset": "UTC+1", "summerOffset": null }, { "from": 1974, "to": 2027, "clocksMove": true, "standardOffset": "UTC+1", "summerOffset": "UTC+2" } ], "changes": [ { "year": 1974, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+2 in summer." } ] }, { "zone": "Europe/Ulyanovsk", "standardOffset": "UTC+4", "standardOffsetMinutes": 240, "observesDst": false, "dstAdoptedIn": 2016, "dstAbolishedIn": 2017, "unchangedSince": 2017, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+4", "summerOffset": null }, { "from": 1981, "to": 1988, "clocksMove": true, "standardOffset": "UTC+4", "summerOffset": "UTC+5" }, { "from": 1989, "to": 1989, "clocksMove": false, "standardOffset": "UTC+4", "summerOffset": null }, { "from": 1990, "to": 1990, "clocksMove": true, "standardOffset": "UTC+3", "summerOffset": "UTC+4" }, { "from": 1991, "to": 1991, "clocksMove": false, "standardOffset": "UTC+3", "summerOffset": null }, { "from": 1992, "to": 1992, "clocksMove": true, "standardOffset": "UTC+2", "summerOffset": "UTC+4" }, { "from": 1993, "to": 2011, "clocksMove": true, "standardOffset": "UTC+3", "summerOffset": "UTC+4" }, { "from": 2012, "to": 2014, "clocksMove": false, "standardOffset": "UTC+4", "summerOffset": null }, { "from": 2015, "to": 2015, "clocksMove": false, "standardOffset": "UTC+3", "summerOffset": null }, { "from": 2016, "to": 2016, "clocksMove": true, "standardOffset": "UTC+3", "summerOffset": "UTC+4" }, { "from": 2017, "to": 2027, "clocksMove": false, "standardOffset": "UTC+4", "summerOffset": null } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+5 in summer." }, { "year": 1989, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+4 became the year-round time." }, { "year": 1990, "date": "1989-09-23", "description": "Standard time moved from UTC+4 to UTC+3, a shift of 1 hour." }, { "year": 1990, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+4 in summer." }, { "year": 1991, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+3 became the year-round time." }, { "year": 1992, "date": "1991-09-29", "description": "Standard time moved from UTC+3 to UTC+2, a shift of 1 hour." }, { "year": 1992, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+4 in summer." }, { "year": 1993, "date": "1992-09-26", "description": "Standard time moved from UTC+2 to UTC+3, a shift of 1 hour." }, { "year": 2012, "date": null, "description": "Standard time moved from UTC+3 to UTC+4, a shift of 1 hour." }, { "year": 2012, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+4 became the year-round time." }, { "year": 2015, "date": "2014-10-25", "description": "Standard time moved from UTC+4 to UTC+3, a shift of 1 hour." }, { "year": 2016, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+4 in summer." }, { "year": 2017, "date": null, "description": "Standard time moved from UTC+3 to UTC+4, a shift of 1 hour." }, { "year": 2017, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+4 became the year-round time." } ] }, { "zone": "Europe/Vienna", "standardOffset": "UTC+1", "standardOffsetMinutes": 60, "observesDst": true, "dstAdoptedIn": 1980, "dstAbolishedIn": null, "unchangedSince": 1980, "eras": [ { "from": 1970, "to": 1979, "clocksMove": false, "standardOffset": "UTC+1", "summerOffset": null }, { "from": 1980, "to": 2027, "clocksMove": true, "standardOffset": "UTC+1", "summerOffset": "UTC+2" } ], "changes": [ { "year": 1980, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+2 in summer." } ] }, { "zone": "Europe/Vilnius", "standardOffset": "UTC+2", "standardOffsetMinutes": 120, "observesDst": true, "dstAdoptedIn": 2003, "dstAbolishedIn": null, "unchangedSince": 2003, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+3", "summerOffset": null }, { "from": 1981, "to": 1988, "clocksMove": true, "standardOffset": "UTC+3", "summerOffset": "UTC+4" }, { "from": 1989, "to": 1989, "clocksMove": false, "standardOffset": "UTC+3", "summerOffset": null }, { "from": 1990, "to": 1997, "clocksMove": true, "standardOffset": "UTC+2", "summerOffset": "UTC+3" }, { "from": 1998, "to": 1998, "clocksMove": false, "standardOffset": "UTC+2", "summerOffset": null }, { "from": 1999, "to": 1999, "clocksMove": true, "standardOffset": "UTC+1", "summerOffset": "UTC+2" }, { "from": 2000, "to": 2002, "clocksMove": false, "standardOffset": "UTC+2", "summerOffset": null }, { "from": 2003, "to": 2027, "clocksMove": true, "standardOffset": "UTC+2", "summerOffset": "UTC+3" } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+4 in summer." }, { "year": 1989, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+3 became the year-round time." }, { "year": 1990, "date": "1989-09-24", "description": "Standard time moved from UTC+3 to UTC+2, a shift of 1 hour." }, { "year": 1990, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+3 in summer." }, { "year": 1998, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+2 became the year-round time." }, { "year": 1999, "date": "1998-10-25", "description": "Standard time moved from UTC+2 to UTC+1, a shift of 1 hour." }, { "year": 1999, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+2 in summer." }, { "year": 2000, "date": null, "description": "Standard time moved from UTC+1 to UTC+2, a shift of 1 hour." }, { "year": 2000, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+2 became the year-round time." }, { "year": 2003, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+3 in summer." } ] }, { "zone": "Europe/Volgograd", "standardOffset": "UTC+3", "standardOffsetMinutes": 180, "observesDst": false, "dstAdoptedIn": 1993, "dstAbolishedIn": 2012, "unchangedSince": 2021, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+4", "summerOffset": null }, { "from": 1981, "to": 1987, "clocksMove": true, "standardOffset": "UTC+4", "summerOffset": "UTC+5" }, { "from": 1988, "to": 1988, "clocksMove": false, "standardOffset": "UTC+4", "summerOffset": null }, { "from": 1989, "to": 1991, "clocksMove": true, "standardOffset": "UTC+3", "summerOffset": "UTC+4" }, { "from": 1992, "to": 1992, "clocksMove": false, "standardOffset": "UTC+4", "summerOffset": null }, { "from": 1993, "to": 2011, "clocksMove": true, "standardOffset": "UTC+3", "summerOffset": "UTC+4" }, { "from": 2012, "to": 2014, "clocksMove": false, "standardOffset": "UTC+4", "summerOffset": null }, { "from": 2015, "to": 2018, "clocksMove": false, "standardOffset": "UTC+3", "summerOffset": null }, { "from": 2019, "to": 2020, "clocksMove": false, "standardOffset": "UTC+4", "summerOffset": null }, { "from": 2021, "to": 2027, "clocksMove": false, "standardOffset": "UTC+3", "summerOffset": null } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+5 in summer." }, { "year": 1988, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+4 became the year-round time." }, { "year": 1989, "date": "1988-09-24", "description": "Standard time moved from UTC+4 to UTC+3, a shift of 1 hour." }, { "year": 1989, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+4 in summer." }, { "year": 1992, "date": "1992-09-26", "description": "Standard time moved from UTC+3 to UTC+4, a shift of 1 hour." }, { "year": 1992, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+4 became the year-round time." }, { "year": 1993, "date": "1992-09-26", "description": "Standard time moved from UTC+4 to UTC+3, a shift of 1 hour." }, { "year": 1993, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+4 in summer." }, { "year": 2012, "date": null, "description": "Standard time moved from UTC+3 to UTC+4, a shift of 1 hour." }, { "year": 2012, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+4 became the year-round time." }, { "year": 2015, "date": "2014-10-25", "description": "Standard time moved from UTC+4 to UTC+3, a shift of 1 hour." }, { "year": 2019, "date": "2018-10-27", "description": "Standard time moved from UTC+3 to UTC+4, a shift of 1 hour." }, { "year": 2021, "date": "2020-12-26", "description": "Standard time moved from UTC+4 to UTC+3, a shift of 1 hour." } ] }, { "zone": "Europe/Warsaw", "standardOffset": "UTC+1", "standardOffsetMinutes": 60, "observesDst": true, "dstAdoptedIn": 1977, "dstAbolishedIn": null, "unchangedSince": 1977, "eras": [ { "from": 1970, "to": 1976, "clocksMove": false, "standardOffset": "UTC+1", "summerOffset": null }, { "from": 1977, "to": 2027, "clocksMove": true, "standardOffset": "UTC+1", "summerOffset": "UTC+2" } ], "changes": [ { "year": 1977, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+2 in summer." } ] }, { "zone": "Europe/Zagreb", "standardOffset": "UTC+1", "standardOffsetMinutes": 60, "observesDst": true, "dstAdoptedIn": 1983, "dstAbolishedIn": null, "unchangedSince": 1983, "eras": [ { "from": 1970, "to": 1982, "clocksMove": false, "standardOffset": "UTC+1", "summerOffset": null }, { "from": 1983, "to": 2027, "clocksMove": true, "standardOffset": "UTC+1", "summerOffset": "UTC+2" } ], "changes": [ { "year": 1983, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+2 in summer." } ] }, { "zone": "Europe/Zurich", "standardOffset": "UTC+1", "standardOffsetMinutes": 60, "observesDst": true, "dstAdoptedIn": 1981, "dstAbolishedIn": null, "unchangedSince": 1981, "eras": [ { "from": 1970, "to": 1980, "clocksMove": false, "standardOffset": "UTC+1", "summerOffset": null }, { "from": 1981, "to": 2027, "clocksMove": true, "standardOffset": "UTC+1", "summerOffset": "UTC+2" } ], "changes": [ { "year": 1981, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+2 in summer." } ] }, { "zone": "Indian/Chagos", "standardOffset": "UTC+6", "standardOffsetMinutes": 360, "observesDst": false, "dstAdoptedIn": null, "dstAbolishedIn": null, "unchangedSince": 1996, "eras": [ { "from": 1970, "to": 1995, "clocksMove": false, "standardOffset": "UTC+5", "summerOffset": null }, { "from": 1996, "to": 2027, "clocksMove": false, "standardOffset": "UTC+6", "summerOffset": null } ], "changes": [ { "year": 1996, "date": "1995-12-31", "description": "Standard time moved from UTC+5 to UTC+6, a shift of 1 hour." } ] }, { "zone": "Pacific/Apia", "standardOffset": "UTC+13", "standardOffsetMinutes": 780, "observesDst": false, "dstAdoptedIn": 2011, "dstAbolishedIn": 2022, "unchangedSince": 2022, "eras": [ { "from": 1970, "to": 2010, "clocksMove": false, "standardOffset": "UTC−11", "summerOffset": null }, { "from": 2011, "to": 2011, "clocksMove": true, "standardOffset": "UTC−11", "summerOffset": "UTC−10" }, { "from": 2012, "to": 2021, "clocksMove": true, "standardOffset": "UTC+13", "summerOffset": "UTC+14" }, { "from": 2022, "to": 2027, "clocksMove": false, "standardOffset": "UTC+13", "summerOffset": null } ], "changes": [ { "year": 2011, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−10 in summer." }, { "year": 2012, "date": "2011-12-30", "description": "Standard time moved from UTC−11 to UTC+13 — a date-line crossing, which deletes or repeats a whole day." }, { "year": 2022, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+13 became the year-round time." } ] }, { "zone": "Pacific/Auckland", "standardOffset": "UTC+12", "standardOffsetMinutes": 720, "observesDst": true, "dstAdoptedIn": 1975, "dstAbolishedIn": null, "unchangedSince": 1975, "eras": [ { "from": 1970, "to": 1974, "clocksMove": false, "standardOffset": "UTC+12", "summerOffset": null }, { "from": 1975, "to": 2027, "clocksMove": true, "standardOffset": "UTC+12", "summerOffset": "UTC+13" } ], "changes": [ { "year": 1975, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+13 in summer." } ] }, { "zone": "Pacific/Bougainville", "standardOffset": "UTC+11", "standardOffsetMinutes": 660, "observesDst": false, "dstAdoptedIn": null, "dstAbolishedIn": null, "unchangedSince": 2015, "eras": [ { "from": 1970, "to": 2014, "clocksMove": false, "standardOffset": "UTC+10", "summerOffset": null }, { "from": 2015, "to": 2027, "clocksMove": false, "standardOffset": "UTC+11", "summerOffset": null } ], "changes": [ { "year": 2015, "date": "2014-12-27", "description": "Standard time moved from UTC+10 to UTC+11, a shift of 1 hour." } ] }, { "zone": "Pacific/Easter", "standardOffset": "UTC−6", "standardOffsetMinutes": -360, "observesDst": true, "dstAdoptedIn": 2016, "dstAbolishedIn": null, "unchangedSince": 2016, "eras": [ { "from": 1970, "to": 1981, "clocksMove": true, "standardOffset": "UTC−7", "summerOffset": "UTC−6" }, { "from": 1982, "to": 1982, "clocksMove": false, "standardOffset": "UTC−6", "summerOffset": null }, { "from": 1983, "to": 2014, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" }, { "from": 2015, "to": 2015, "clocksMove": false, "standardOffset": "UTC−5", "summerOffset": null }, { "from": 2016, "to": 2027, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" } ], "changes": [ { "year": 1982, "date": "1981-10-11", "description": "Standard time moved from UTC−7 to UTC−6, a shift of 1 hour." }, { "year": 1982, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−6 became the year-round time." }, { "year": 1983, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−5 in summer." }, { "year": 2015, "date": "2014-09-07", "description": "Standard time moved from UTC−6 to UTC−5, a shift of 1 hour." }, { "year": 2015, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−5 became the year-round time." }, { "year": 2016, "date": "2016-05-15", "description": "Standard time moved from UTC−5 to UTC−6, a shift of 1 hour." }, { "year": 2016, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−5 in summer." } ] }, { "zone": "Pacific/Enderbury", "standardOffset": "UTC+13", "standardOffsetMinutes": 780, "observesDst": false, "dstAdoptedIn": null, "dstAbolishedIn": null, "unchangedSince": 1995, "eras": [ { "from": 1970, "to": 1979, "clocksMove": false, "standardOffset": "UTC−12", "summerOffset": null }, { "from": 1980, "to": 1994, "clocksMove": false, "standardOffset": "UTC−11", "summerOffset": null }, { "from": 1995, "to": 2027, "clocksMove": false, "standardOffset": "UTC+13", "summerOffset": null } ], "changes": [ { "year": 1980, "date": "1979-10-01", "description": "Standard time moved from UTC−12 to UTC−11, a shift of 1 hour." }, { "year": 1995, "date": "1994-12-31", "description": "Standard time moved from UTC−11 to UTC+13 — a date-line crossing, which deletes or repeats a whole day." } ] }, { "zone": "Pacific/Fakaofo", "standardOffset": "UTC+13", "standardOffsetMinutes": 780, "observesDst": false, "dstAdoptedIn": null, "dstAbolishedIn": null, "unchangedSince": 2012, "eras": [ { "from": 1970, "to": 2011, "clocksMove": false, "standardOffset": "UTC−11", "summerOffset": null }, { "from": 2012, "to": 2027, "clocksMove": false, "standardOffset": "UTC+13", "summerOffset": null } ], "changes": [ { "year": 2012, "date": "2011-12-30", "description": "Standard time moved from UTC−11 to UTC+13 — a date-line crossing, which deletes or repeats a whole day." } ] }, { "zone": "Pacific/Galapagos", "standardOffset": "UTC−6", "standardOffsetMinutes": -360, "observesDst": false, "dstAdoptedIn": 1993, "dstAbolishedIn": 1994, "unchangedSince": 1994, "eras": [ { "from": 1970, "to": 1985, "clocksMove": false, "standardOffset": "UTC−5", "summerOffset": null }, { "from": 1986, "to": 1992, "clocksMove": false, "standardOffset": "UTC−6", "summerOffset": null }, { "from": 1993, "to": 1993, "clocksMove": true, "standardOffset": "UTC−6", "summerOffset": "UTC−5" }, { "from": 1994, "to": 2027, "clocksMove": false, "standardOffset": "UTC−6", "summerOffset": null } ], "changes": [ { "year": 1986, "date": "1986-01-01", "description": "Standard time moved from UTC−5 to UTC−6, a shift of 1 hour." }, { "year": 1993, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−5 in summer." }, { "year": 1994, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−6 became the year-round time." } ] }, { "zone": "Pacific/Kiritimati", "standardOffset": "UTC+14", "standardOffsetMinutes": 840, "observesDst": false, "dstAdoptedIn": null, "dstAbolishedIn": null, "unchangedSince": 1995, "eras": [ { "from": 1970, "to": 1979, "clocksMove": false, "standardOffset": "UTC−10:40", "summerOffset": null }, { "from": 1980, "to": 1994, "clocksMove": false, "standardOffset": "UTC−10", "summerOffset": null }, { "from": 1995, "to": 2027, "clocksMove": false, "standardOffset": "UTC+14", "summerOffset": null } ], "changes": [ { "year": 1980, "date": "1979-10-01", "description": "Standard time moved from UTC−10:40 to UTC−10, a shift of 40 minutes." }, { "year": 1995, "date": "1994-12-31", "description": "Standard time moved from UTC−10 to UTC+14 — a date-line crossing, which deletes or repeats a whole day." } ] }, { "zone": "Pacific/Kosrae", "standardOffset": "UTC+11", "standardOffsetMinutes": 660, "observesDst": false, "dstAdoptedIn": null, "dstAbolishedIn": null, "unchangedSince": 1999, "eras": [ { "from": 1970, "to": 1998, "clocksMove": false, "standardOffset": "UTC+12", "summerOffset": null }, { "from": 1999, "to": 2027, "clocksMove": false, "standardOffset": "UTC+11", "summerOffset": null } ], "changes": [ { "year": 1999, "date": "1998-12-31", "description": "Standard time moved from UTC+12 to UTC+11, a shift of 1 hour." } ] }, { "zone": "Pacific/Kwajalein", "standardOffset": "UTC+12", "standardOffsetMinutes": 720, "observesDst": false, "dstAdoptedIn": null, "dstAbolishedIn": null, "unchangedSince": 1994, "eras": [ { "from": 1970, "to": 1993, "clocksMove": false, "standardOffset": "UTC−12", "summerOffset": null }, { "from": 1994, "to": 2027, "clocksMove": false, "standardOffset": "UTC+12", "summerOffset": null } ], "changes": [ { "year": 1994, "date": "1993-08-21", "description": "Standard time moved from UTC−12 to UTC+12 — a date-line crossing, which deletes or repeats a whole day." } ] }, { "zone": "Pacific/Nauru", "standardOffset": "UTC+12", "standardOffsetMinutes": 720, "observesDst": false, "dstAdoptedIn": 1979, "dstAbolishedIn": 1980, "unchangedSince": 1980, "eras": [ { "from": 1970, "to": 1978, "clocksMove": false, "standardOffset": "UTC+11:30", "summerOffset": null }, { "from": 1979, "to": 1979, "clocksMove": true, "standardOffset": "UTC+11:30", "summerOffset": "UTC+12" }, { "from": 1980, "to": 2027, "clocksMove": false, "standardOffset": "UTC+12", "summerOffset": null } ], "changes": [ { "year": 1979, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+12 in summer." }, { "year": 1980, "date": null, "description": "Standard time moved from UTC+11:30 to UTC+12, a shift of 30 minutes." }, { "year": 1980, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+12 became the year-round time." } ] }, { "zone": "Pacific/Norfolk", "standardOffset": "UTC+11", "standardOffsetMinutes": 660, "observesDst": true, "dstAdoptedIn": 2020, "dstAbolishedIn": null, "unchangedSince": 2020, "eras": [ { "from": 1970, "to": 1974, "clocksMove": false, "standardOffset": "UTC+11:30", "summerOffset": null }, { "from": 1975, "to": 1975, "clocksMove": true, "standardOffset": "UTC+11:30", "summerOffset": "UTC+12:30" }, { "from": 1976, "to": 2015, "clocksMove": false, "standardOffset": "UTC+11:30", "summerOffset": null }, { "from": 2016, "to": 2019, "clocksMove": false, "standardOffset": "UTC+11", "summerOffset": null }, { "from": 2020, "to": 2027, "clocksMove": true, "standardOffset": "UTC+11", "summerOffset": "UTC+12" } ], "changes": [ { "year": 1975, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+12:30 in summer." }, { "year": 1976, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC+11:30 became the year-round time." }, { "year": 2016, "date": "2015-10-03", "description": "Standard time moved from UTC+11:30 to UTC+11, a shift of 30 minutes." }, { "year": 2020, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC+12 in summer." } ] }, { "zone": "Pacific/Pitcairn", "standardOffset": "UTC−8", "standardOffsetMinutes": -480, "observesDst": false, "dstAdoptedIn": 1998, "dstAbolishedIn": 1999, "unchangedSince": 1999, "eras": [ { "from": 1970, "to": 1997, "clocksMove": false, "standardOffset": "UTC−8:30", "summerOffset": null }, { "from": 1998, "to": 1998, "clocksMove": true, "standardOffset": "UTC−8:30", "summerOffset": "UTC−8" }, { "from": 1999, "to": 2027, "clocksMove": false, "standardOffset": "UTC−8", "summerOffset": null } ], "changes": [ { "year": 1998, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−8 in summer." }, { "year": 1999, "date": null, "description": "Standard time moved from UTC−8:30 to UTC−8, a shift of 30 minutes." }, { "year": 1999, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−8 became the year-round time." } ] }, { "zone": "Pacific/Rarotonga", "standardOffset": "UTC−10", "standardOffsetMinutes": -600, "observesDst": false, "dstAdoptedIn": 1979, "dstAbolishedIn": 1992, "unchangedSince": 1992, "eras": [ { "from": 1970, "to": 1978, "clocksMove": false, "standardOffset": "UTC−10:30", "summerOffset": null }, { "from": 1979, "to": 1991, "clocksMove": true, "standardOffset": "UTC−10", "summerOffset": "UTC−9:30" }, { "from": 1992, "to": 2027, "clocksMove": false, "standardOffset": "UTC−10", "summerOffset": null } ], "changes": [ { "year": 1979, "date": "1978-11-12", "description": "Standard time moved from UTC−10:30 to UTC−10, a shift of 30 minutes." }, { "year": 1979, "date": null, "description": "Daylight saving adopted — the clocks began moving again, to UTC−9:30 in summer." }, { "year": 1992, "date": null, "description": "Daylight saving abolished — the clocks stopped moving and UTC−10 became the year-round time." } ] } ] }