Overview
- Most European Union countries, the United Kingdom and Israel moved clocks back one hour on Sunday, October 25, returning to standard (winter) time and bringing earlier sunsets across the region.
- The United States will set clocks back at 2 a.m. local time on Sunday, November 1, because the Sunshine Protection Act passed the House but has not cleared the Senate or become law.
- Medical groups and recent research argue that switching clocks twice a year harms sleep and health and that permanent standard time is the safer option because it preserves morning sunlight that sets the circadian clock.
- Device makers say most internet‑connected phones and computers will update automatically but many manual clocks, ovens, car dashboards and some scheduling systems may need hand changes and can cause cross‑border meeting errors.
- Several countries have pursued different paths—Ukraine technically switched to standard time despite an unsigned 2024 law aimed at ending changes—and observers warn the patchwork of rules will continue to complicate travel, work schedules and safety unless laws are clarified.