When two countries are both at work
Shared working hours for 264 country pairs, computed from each country's own office day and rest days rather than a nine-to-five assumed for both. 33 of these pairs do not keep the same working week, which is the case a time-zone converter cannot tell you about.
- 0h Japan → the United States brutal
- 0h the United States → Japan brutal
- 0h Australia → the United Kingdom brutal
- 0h the United Kingdom → Australia brutal
- 0h the United States → China brutal
- 0h China → the United States brutal
- 0h the United States → Australia brutal
- 0h Australia → the United States brutal
- 0h the United States → Singapore brutal
- 0h Singapore → the United States brutal
- 0h Japan → Canada brutal
- 0h Canada → Japan brutal
- 0h China → Canada brutal
- 0h Canada → China brutal
- 0h the United States → the United Arab Emirates brutal
- 0h Australia → Canada brutal
- 0h Canada → Australia brutal
- 0h the United Arab Emirates → the United States brutal
- 0h Australia → France brutal
- 0h Singapore → Canada brutal
- 0h Canada → Singapore brutal
- 0h France → Australia brutal
- 0h Australia → the Netherlands brutal
- 0h the Netherlands → Australia brutal
- 0h Australia → Spain brutal
- 0h Spain → Australia brutal
- 0h the United States → South Korea brutal
- 0h South Korea → the United States brutal
- 0h Japan → Brazil brutal
- 0h Brazil → Japan brutal
- 0h China → Brazil brutal
- 0h Canada → the United Arab Emirates brutal
- 0h the United Arab Emirates → Canada brutal
- 0h Brazil → China brutal
- 0h Australia → Brazil brutal
- 0.5h India → the United States hard
- 0.5h the United States → India hard
- 0.5h India → Canada hard
- 0.5h Canada → India hard
- 1h Norway → the United States hard
- 1h the United States → Norway hard
- 1h Israel → the United States hard · different working week
- 1h the United States → Israel hard · different working week
- 1h the United Kingdom → Japan hard
- 1h Japan → the United Kingdom hard
- 1h Germany → Australia hard
- 1h Australia → Germany hard
- 1h the United States → Saudi Arabia hard · different working week
- 1h Saudi Arabia → the United States hard · different working week
- 1h Australia → Norway hard
- 1h Norway → Australia hard
- 1h the United States → Poland hard
- 1h the United Kingdom → South Korea hard
- 1h Australia → Sweden hard
- 1h Sweden → Australia hard
- 1h South Korea → the United Kingdom hard
- 1h Poland → the United States hard
- 1h Canada → Norway hard
- 1h Norway → Canada hard
- 1h Australia → Israel hard · different working week
- 1h Israel → Australia hard · different working week
- 1h Canada → Saudi Arabia hard · different working week
- 1h Saudi Arabia → Canada hard · different working week
- 1.5h India → Brazil hard
- 1.5h Brazil → India hard
- 2h Germany → the United States tight
- 2h the United States → Germany tight
- 2h Singapore → the United Kingdom tight
- 2h the United Kingdom → Singapore tight
- 2h the United Kingdom → China tight
- 2h China → the United Kingdom tight
- 2h the United States → the Netherlands tight
- 2h Germany → Canada tight
- 2h Canada → Germany tight
- 2h the Netherlands → the United States tight
- 2h the United States → Sweden tight
- 2h Japan → France tight
- 2h France → Japan tight
- 2h Sweden → the United States tight
- 2h Japan → the Netherlands tight
- 2h the Netherlands → Japan tight
- 2h Japan → Spain tight
- 2h Spain → Japan tight
- 2h Canada → the Netherlands tight
- 2h the Netherlands → Canada tight
- 2h Australia → Saudi Arabia tight · different working week
- 2h Canada → Sweden tight
- 2h Sweden → Canada tight
- 2h Saudi Arabia → Australia tight · different working week
- 2.5h India → Australia tight
- 2.5h Australia → India tight
- 3h the United Kingdom → the United States tight
- 3h the United States → the United Kingdom tight
- 3h Germany → Japan tight
- 3h Japan → Germany tight
- 3h the United States → France tight
- 3h the United Kingdom → Canada tight
- 3h Canada → the United Kingdom tight
- 3h France → the United States tight
- 3h the United States → Spain tight
- 3h Spain → the United States tight
- 3h China → France tight
- 3h France → China tight
- 3h China → the Netherlands tight
- 3h the Netherlands → China tight
- 3h Japan → Norway tight
- 3h China → Spain tight
- 3h Singapore → France tight
- 3h France → Singapore tight
- 3h Spain → China tight
- 3h Norway → Japan tight
- 3h Japan → Sweden tight
- 3h Singapore → the Netherlands tight
- 3h Canada → France tight
- 3h France → Canada tight
- 3h the Netherlands → Singapore tight
- 3h Sweden → Japan tight
- 3h Singapore → Spain tight
- 3h Spain → Singapore tight
- 3h Germany → Brazil tight
- 3h Canada → Spain tight
- 3h Spain → Canada tight
- 3h Brazil → Germany tight
- 3h Germany → South Korea tight
- 3h Japan → Israel tight · different working week
- 3h Australia → the United Arab Emirates tight
- 3h the United Arab Emirates → Australia tight
- 3h Israel → Japan tight · different working week
- 3h South Korea → Germany tight
- 3h Japan → Poland tight
- 4h Germany → China workable
- 4h China → Germany workable
- 4h Germany → Singapore workable
- 4h Singapore → Germany workable
- 4h China → Norway workable
- 4h Norway → China workable
- 4h the United Kingdom → Brazil workable
- 4h China → Sweden workable
- 4h Sweden → China workable
- 4h Brazil → the United Kingdom workable
- 4h Japan → Saudi Arabia workable · different working week
- 4h Singapore → Norway workable
- 4h Norway → Singapore workable
- 4h Saudi Arabia → Japan workable · different working week
- 4h Singapore → Sweden workable
- 4h Sweden → Singapore workable
- 4h China → Israel workable · different working week
- 4h Israel → China workable · different working week
- 4h Singapore → Israel workable · different working week
- 4.5h India → Japan workable
- 4.5h Japan → India workable
- 4.5h India → South Korea workable
- 4.5h South Korea → India workable
- 5h the United Arab Emirates → the United Kingdom workable
- 5h the United Kingdom → the United Arab Emirates workable
- 5h Japan → the United Arab Emirates workable
- 5h the United Arab Emirates → Japan workable
- 5h China → Saudi Arabia workable · different working week
- 5h Saudi Arabia → China workable · different working week
- 5h Singapore → Saudi Arabia workable · different working week
- 5h Saudi Arabia → Singapore workable · different working week
- 5.5h India → the United Kingdom workable
- 5.5h the United Kingdom → India workable
- 5.5h India → China workable
- 5.5h China → India workable
- 5.5h India → Singapore workable
- 5.5h Singapore → India workable
- 6h China → Australia easy
- 6h Australia → China easy
- 6h the United Kingdom → Norway easy
- 6h Australia → Singapore easy
- 6h Singapore → Australia easy
- 6h Norway → the United Kingdom easy
- 6h the United Kingdom → Saudi Arabia easy · different working week
- 6h Saudi Arabia → the United Kingdom easy · different working week
- 6h the United Kingdom → Israel easy · different working week
- 6h Israel → the United Kingdom easy · different working week
- 6h China → the United Arab Emirates easy
- 6h the United Arab Emirates → China easy
- 6h the United Kingdom → Poland easy
- 6h Poland → the United Kingdom easy
- 6h Singapore → the United Arab Emirates easy
- 6h the United Arab Emirates → Singapore easy
- 6h France → the United Arab Emirates easy
- 6h the United Arab Emirates → France easy
- 6.5h India → France easy
- 6.5h France → India easy
- 6.5h India → the Netherlands easy
- 6.5h the Netherlands → India easy
- 6.5h India → Spain easy
- 6.5h Spain → India easy
- 7h the United Kingdom → Germany easy
- 7h Germany → the United Kingdom easy
- 7h Japan → Australia easy
- 7h Australia → Japan easy
- 7h the United Kingdom → the Netherlands easy
- 7h the Netherlands → the United Kingdom easy
- 7h the United Kingdom → Sweden easy
- 7h Sweden → the United Kingdom easy
- 7h Germany → the United Arab Emirates easy
- 7h the United Arab Emirates → Germany easy
- 7h France → Norway easy
- 7h Norway → France easy
- 7h the Netherlands → Norway easy
- 7h Norway → the Netherlands easy
- 7h Spain → Norway easy
- 7h Norway → Spain easy
- 7.5h Norway → India easy
- 7.5h India → Norway easy
- 7.5h Germany → India easy
- 7.5h India → Germany easy
- 7.5h India → Sweden easy
- 7.5h Sweden → India easy
- 7.5h India → Israel easy · different working week
- 7.5h Israel → India easy · different working week
- 7.5h India → Poland easy
- 7.5h Poland → India easy
- 8h Saudi Arabia → Germany easy · different working week
- 8h Germany → Saudi Arabia easy · different working week
- 8h the United States → Canada easy
- 8h Canada → the United States easy
- 8h Japan → China easy
- 8h China → Japan easy
- 8h the United Kingdom → France easy
- 8h France → the United Kingdom easy
- 8h Germany → France easy
- 8h Japan → Singapore easy
- 8h Singapore → Japan easy
- 8h France → Germany easy
- 8h the United Kingdom → Spain easy
- 8h Germany → the Netherlands easy
- 8h the Netherlands → Germany easy
- 8h Spain → the United Kingdom easy
- 8h Germany → Spain easy
- 8h Spain → Germany easy
- 8h Germany → Norway easy
- 8h Norway → Germany easy
- 8h the United States → Brazil easy
- 8h Brazil → the United States easy
- 8h Germany → Israel easy · different working week
- 8h Israel → Germany easy · different working week
- 8h France → the Netherlands easy
- 8h the Netherlands → France easy
- 8h Germany → Poland easy
- 8h the Netherlands → Spain easy
- 8h Spain → the Netherlands easy
- 8h Poland → Germany easy
- 8h France → Sweden easy
- 8h Sweden → France easy
- 8h China → South Korea easy
- 8h the Netherlands → Sweden easy
- 8h Sweden → the Netherlands easy
- 8.5h India → the United Arab Emirates easy
- 8.5h the United Arab Emirates → India easy
- 8.5h India → Saudi Arabia easy · different working week
- 8.5h Saudi Arabia → India easy · different working week
- 9h China → Singapore easy
- 9h Singapore → China easy
- 9h Germany → Sweden easy
- 9h Sweden → Germany easy
- 9h France → Spain easy
- 9h Spain → France easy
- 9h Japan → South Korea easy
- 9h South Korea → Japan easy
FAQ
How is the overlap calculated?
From each country's published office hours and rest days, intersected on a common axis. Not from a nine-to-five assumed for both sides — Norway finishes at four and Portugal at six, and assuming otherwise is an hour wrong in each direction.
Why are both directions listed?
Because the window is quoted on the reader's clock first, and which clock comes first is most of the usefulness. The arithmetic is the same; the answer you can act on is not.