Overview
- At 2:00 a.m. local time on Sunday, November 2, 48 of 50 U.S. states will set clocks back one hour to start standard time.
- Mexico ended nationwide seasonal clock changes in 2022, yet Baja California and designated municipalities in Chihuahua, Coahuila, Nuevo León and Tamaulipas will also shift back at 2:00 a.m. to stay synchronized with adjacent U.S. cities.
- Under the Uniform Time Act, Congress determines national time policy and the U.S. Department of Transportation administers implementation across states.
- Florida has approved a law to keep daylight saving time year-round and Illinois has advanced a resolution seeking the same, but neither can take effect unless Congress changes federal law.
- Health experts say the one-hour switch can temporarily disrupt sleep and focus, recommending steady routines and morning light, and residents should manually adjust clocks and devices that do not update automatically.