Daylight saving time ends across most of the United States

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Daylight saving time ended across most of the United States on Sunday, November 1. At 2 a.m., clocks were set back one hour to standard time, turning the repeated hour into an extra hour for people adjusting to the change.

The switch is the autumn half of the country’s twice-yearly clock change. In spring, clocks move forward to extend evening daylight; in fall, they move back. The return to standard time brings earlier sunrise and sunset by the clock, with darker evenings.

Most of the United States observes daylight saving time, but not all. Arizona and Hawaii stay on standard time, as do American Samoa, Guam, the Northern Mariana Islands, Puerto Rico and the U.S. Virgin Islands. The change therefore does not apply uniformly across the country.

For people who did change their clocks, the lost evening light may affect work, school and travel routines, while the brighter morning arrives earlier. Many phones and internet-connected devices update automatically, but clocks that are set manually may need to be changed.

The United States has used a shared framework for states that observe daylight saving time since the Uniform Time Act of 1966. Sunday’s adjustment was the scheduled move back to standard time; the available reporting does not establish a permanent end to seasonal clock changes or a change in the rules.

The shift can also affect sleep and health. Research cited by experts has found the spring move to daylight saving time more disruptive than the fall return, with lost sleep and higher heart-attack rates measured in the days after the spring change. Risks are generally lower after the November adjustment.

Beth Malow, a neurology and pediatrics professor at Vanderbilt University, said research has suggested stroke rates rise around both seasonal changes, though the risk of death is higher in spring. Sunday’s change has now taken effect; the United States is back on standard time.

Reporting

• Sleep health expert explains how falling back affects the body clockNews-Medical
• Clocks fell back early this year: What the time change means for youKTLA
• Clocks fell back early this year: What the time change means for youYahoo
• Daylight saving time 2026 ends in the US: Clocks fall back an hour, and sleep experts aren't happyThe Times of India
• Falling back and tracking the next weather changeWTVA
• When does Daylight Savings starts in 2027? Date for the next changeMARCA
• Daylight saving time 2026 ended today. Here's what time the clocks changed and more key details.CBS News
• Opinion: Your most dangerous drive homeCT Mirror

More sources (2)

• Opinion | Why daylight saving time should be eliminated entirelyThe Washington Post
• How to ‘fall back’ this weekend without losing your mindScientific American