Clocks will shift back one hour early Sunday as daylight saving time comes to an end for 2025.

The change takes effect at 2 a.m. Sunday, Nov. 2, returning the country to standard time and bringing earlier sunrises and sunsets in the weeks ahead. 

Most smartphones and newer digital devices will update automatically, but some clocks — including wall clocks, microwaves and older car models — will require a manual adjustment.

To avoid any mix-ups, clocks should be set back one hour before going to bed Saturday night.

Fire officials recommend using the time change as a reminder to check the batteries of carbon monoxide detectors and smoke detectors.

The biannual time change is governed by the federal Uniform Time Act of 1966. While most states observe daylight saving time, Hawaii, most of Arizona, and several U.S. territories do not.

Daylight saving time in the United States will start again on Sunday, March 8, 2026, at 2 a.m. and end on Sunday, Nov. 1, 2026, at 2 a.m.