Who changes the clocks
- United States and Canada: forward on the second Sunday in March, back on the first Sunday in November, at 2:00 local time. Arizona (except the Navajo Nation), Hawaii, most of Saskatchewan and the US territories keep standard time all year.
- European Union, the UK, Norway and Switzerland: forward on the last Sunday in March and back on the last Sunday in October, everywhere at the same moment, 01:00 UTC.
- Southern hemisphere: Australia’s southeast (New South Wales, Victoria, the ACT, Tasmania and, half an hour apart, South Australia), New Zealand and Chile go back in April and forward in September or October. Queensland, the Northern Territory and Western Australia don’t change.
- No clock changes: most of Asia and Africa, Mexico since 2022 (apart from towns along the US border, which change with the US), Brazil (since 2019), Argentina, Russia, Turkey, Iran and Paraguay.
How this page knows
Your browser carries the IANA time zone database, which every computer and phone uses to set its clock. This page reads the changes from it for your time zone, so it is right wherever you are, as long as your computer’s time zone is set correctly.
