Your phone should turn back the clock automatically on Nov. 1. But in some parts of North America, doing so would leave it an hour behind.

Daylight saving time ends Sunday, Nov. 1, 2026, across most of the United States, with clocks moving back one hour at 2 a.m. Most iPhones and Android phones should adjust automatically. However, several Canadian provinces and territories have ended seasonal clock changes, prompting Google to warn that some devices may display the wrong time.

Google said on Oct. 23 that updated time-zone rules might not reach every affected device before the transition. An incorrect clock could disrupt alarms and work schedules, while certain Google Calendar appointments may also need attention.

Where clocks will change — and where they won’t

Under the US daylight saving time schedule , participating states move their clocks from 2 a.m. back to 1 a.m. Hawaii, most of Arizona and several US territories do not observe the seasonal change.

Canada has introduced new rules for 2026.…