The UK will turn clocks back one hour at 2 a.m. local time on Sunday, October 25, 2026. The United States makes its change one week later, at 2 a.m. local time on Sunday, November 1. Both dates come from official schedules: GOV.UK lists the UK date, and the National Institute of Standards and Technology lists the U.S. date.

In the UK, the change returns clocks to Greenwich Mean Time. In the United States, the clock moves from 2 a.m. back to 1 a.m., repeating that hour before standard time resumes. Because the U.S. rule is based on local time, each time zone that observes daylight saving makes the change at its own 2 a.m.

Why the dates differ

The UK changes on the last Sunday in October. U.S. daylight saving time ends on the first Sunday in November. In 2026, those rules put the two changes on October 25 and November 1, a week apart.

Most of the United States observes daylight saving time. Hawaii and most of Arizona do not; the Navajo Indian Reservation does. A U.S. itinerary or meeting may therefore cross areas that follow different clock schedules.

NIST says a computer’s operating system supplies local time-zone and daylight-saving corrections. Keeping its time-zone updates current helps it apply the published rules. That is not a guarantee for every clock: older devices or clocks with outdated rules may need a manual check. For travel or a cross-border call, confirm the local time for each place rather than assuming the UK and U.S. change together.