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When does daylight saving time begin? The moment to shift clocks forward is near
Daylight saving time starts March 8, linked to short-term rises in fatal crashes and heart attacks, with nearly all U.S. states observing the change, experts say.
On Sunday, March 8, 2026, Daylight Saving Time begins at 2 a.m. CT, with most of the country moving clocks forward one hour, less than a week away.
Under the Energy Policy Act of 2005, DST starts the second Sunday in March, and this year is the earliest possible start because March 1 falls on a Sunday; lawmakers have proposed alternatives including the Daylight Act of 2026 and the Sunshine Protection Act.
The American Heart Association points to studies showing more heart attacks on the Monday after the change and fatal crashes linked to sleep loss; experts advise shifting bedtimes 15 or 20 minutes earlier.
Most digital devices will update themselves, though some household devices and manual clocks must be set by hand, while Arizona, Hawaii and several U.S. territories do not observe DST, creating scheduling mismatches.
In the longer term, DST lasts about 34 weeks and ends Nov. 1, 2026 in observing states, with nineteen states passing laws for year-round DST if federal law changes and President Donald Trump open to signing legislation ending clock changes.