Daylight Saving Time Explained: Who Changes, When, and Why

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Frequently Asked Questions

Which countries observe daylight saving time?
Approximately 70 countries observe some form of DST, primarily in North America, Europe, and parts of Oceania. Most of Africa, Asia, and South America do not observe DST. Notable exceptions include most of Arizona in the US, which does not observe DST.
When do clocks change in the United States?
In the US, clocks spring forward on the second Sunday of March and fall back on the first Sunday of November. Clocks move forward one hour at 2:00 AM local time in spring and back one hour at 2:00 AM in fall.
Is daylight saving time being abolished?
Several countries and regions have recently abolished DST or are considering doing so. The EU proposed ending DST in 2019 but has not yet implemented the change. In the US, the Sunshine Protection Act has been proposed to make DST permanent, but it has not been signed into law.