Daylight Saving Time Is Ending — What Sleep Docs Want You to Know

By Lauren Bedosky, Medically Reviewed by Alex Dimitriu, MD, Oct 16, 2026

Daylight saving time will officially end at 2 a.m. on Sunday, November 1, 2026, when the clocks fall back one hour. Many Americans will get an extra hour of sleep as they return to standard time. People living in most of Arizona and Hawaii won’t need to change anything, since those states don’t observe daylight saving time. If you rejoice over the extra hour of sleep each year, we hear you. But some medical experts say the time change may have unintended health consequences. Here’s why, plus some tips for easing the transition.

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