Every October, there’s a week when Europe and the U.S. are out of sync with daylight saving time, potentially confusing people organizing international meetings
ByThe Associated Press
October 25, 2025, 1: 14 PM
LONDON — For a week every October, people organizing international catch-ups and meetings on both sides of the Atlantic may be briefly confused: Did I just miss that conference call? Why is my grandmother calling me so early?
Most people quickly remember: It’s that strange time each fall when Europe and the United States are out of sync as they switch from daylight saving time to standard time.
Most countries do not observe daylight saving time. And for those that do — mostly in Europe and North America — the date of the clock change varies, partly because of how time-related laws were developed in difference places.
In countries that observe the practice, clocks are set forward one hour from standard time in March to make the most of increased summer daylight hours in the northern hemisphere.
Clocks “fall back” again in the autumn to standard time.
In the U.K. and Europe, this takes place at 2 a.m. on the last Sunday in October.
But in the U.S. and Canada, clocks go back one hour at 2 a.m on the first Sunday in Novem