Overview
- The change takes place at 2:00 a.m. local time on Sunday, Nov. 2, when clocks in participating areas move from 2:00 to 1:00, adding one hour of sleep.
- Hawaii, most of Arizona, Puerto Rico, Guam, the U.S. Virgin Islands and American Samoa do not adjust clocks, though the Navajo Nation follows the switch.
- Thirty-five municipalities along Mexico’s northern border—including Tijuana, Mexicali, Juárez, Piedras Negras, Anáhuac, Reynosa and Matamoros—also set clocks back to stay synchronized, while the rest of Mexico makes no change.
- Phones, computers and smartwatches generally update automatically if set to automatic time, but wall clocks, appliances, vehicle dashboards and some systems must be changed by hand and schedules for travel and overnight shifts should be confirmed.
- Standard time remains in effect until March 2026 under the current federal calendar, congressional action would be required to alter the biannual changes, and sleep experts recommend easing routines to lessen disruption.