US Daylight Saving Time Ends As Clocks Fall Back

Clocks across the majority of the United States will move backward by one hour early Sunday morning, bringing an end to daylight saving time. The change occurs at 2 a.m., allowing residents to regain an hour as clocks reset to 1 a.m. While smartphones generally update automatically, the adjustment signals earlier sunsets and darker evenings that will persist through the fall and winter until standard time concludes in March.

The practice of adjusting clocks dates back to the Standard Time Act of 1918 and has faced numerous revisions, local exemptions, and debates over the decades. Hawaii, most of Arizona, and several U.S. territories do not observe the time changes, maintaining standard time year-round. Globally, only about a third of all countries currently observe daylight saving time.

Legislative efforts to eliminate the twice-yearly ritual have repeatedly stalled, though numerous states have passed measures seeking permanent changes. Proponents of year-round daylight saving time argue it could reduce crime and benefit various activities, while health and sleep professionals caution against the risks of darker mornings and misalignment with natural sunlight.