Daylight saving in Brazil
Brazil does not use daylight saving time. Clocks stay on UTC−3:00 the whole year, so the only thing that ever shifts your time difference with Brazil is your own side changing its clocks.
The next changes
They do not. Brazil has no daylight saving; the clock is UTC−3:00 year round.
Brazil spans 9 time zones; these dates are computed from America/Sao_Paulo. Regions that opt out of daylight saving — where they exist — keep standard time through the summer.
Transitions are computed directly from the IANA time-zone database at build time, not from a hand-kept table — if the rules change, these dates change with the next daily build.
FAQ
When do the clocks change in Brazil?
They do not. Brazil has no daylight saving; the clock is UTC−3:00 year round.
Why does the time difference to other countries wobble?
Countries change their clocks on different dates — Europe and North America are a week or more apart — so for a few weeks each spring and autumn the usual difference is temporarily an hour off. Every overlap and difference figure on this site reads the current offsets from the IANA time-zone database, so those weeks are handled automatically.