Overview

• The change occurs at 2 a.m. local time Sunday, when clocks move back one hour to standard time.
• Phones typically update automatically, but many household clocks and devices require manual resetting.
• Hawaii and most of Arizona stay on standard time year-round, and several states have passed laws for permanent daylight time that need federal approval.
• President Donald Trump has said he supports ending the biannual clock changes, calling them inconvenient and costly, while noting public opinion is split.
• Health experts warn the switch can lower mood and energy and suggest light exposure and consistent sleep routines; clocks will move forward again on March 8, 2026.