Overview

• Spain will switch to winter time overnight Saturday to Sunday, Oct. 25–26, 2025, when 3:00 a.m. becomes 2:00 a.m., remaining on winter time until March 29, 2026.
• Most of the United States ends Daylight Saving Time on Sunday, Nov. 2, 2025 at 2:00 a.m., when clocks move back to 1:00 a.m., and DST is set to resume on March 8, 2026.
• U.S. exceptions that do not change clocks include Hawaii, most of Arizona, Puerto Rico, Guam, American Samoa, the Northern Mariana Islands and the U.S. Virgin Islands.
• Under Mexico’s Ley de los Husos Horarios, designated northern border municipalities in states such as Baja California, Chihuahua, Coahuila, Nuevo León and Tamaulipas must set clocks back on Nov. 2, while the rest of the country makes no seasonal change.
• Officials advise checking manual clocks and schedules even as most digital devices update automatically, and health experts note some people may take up to two weeks to adapt; state efforts like Texas’s HB 1393 to keep a fixed time still require federal approval.