US Ends Daylight Saving Time on November 1 With Sleep and Safety Warnings

Millions of Americans will gain an extra hour when daylight saving time ends at 2 a.m. Sunday, November 1, 2026. The annual clock adjustment returns most of the country to standard time, bringing earlier sunrises and sunsets while prompting health experts to warn about disrupted sleep schedules and seasonal safety concerns.

The next daylight saving period is scheduled to begin March 14, 2027. Hawaii and most of Arizona will remain on standard time, while the Navajo Nation continues observing the clock changes.

According to CBS News, daylight saving time was first introduced nationally in 1918 during World War I to conserve fuel. Congress established uniform nationwide start and end dates in 1966, while the latest changes to the schedule took effect in 2007.

In Boston, the National Weather Service forecasts sunrise at 7:16 a.m. and sunset at 5:39 p.m. on October 31. After the adjustment, sunrise will occur at 6:17 a.m. and sunset at 4:37 p.m. on November 1.

By December 1, sunset in the area is expected at 4:20 p.m. The earlier darkness can affect outdoor activities, commuting conditions and people's sleep patterns.

Dr. John La Puma, a California physician specializing in nature-based medicine, explained that the body's internal clock does not immediately adjust when official time changes.

"When the clocks change, your body clock is still on the old time," La Puma told Fox News Digital.

He said people may experience temporary changes in appetite, wake-up times and energy levels as their bodies adapt to the new schedule.

"So, for about a week, you wake up an hour early. You get hungry early. You feel sleepy early.

It gets dark by five. Afternoon light goes away. You get months of short days. … You need coffee just to feel human.

It's not great," La Puma said.

To reduce disruption, La Puma recommends gradually shifting bedtime, meals and wake-up times before the transition.

"So, you move your day later in small steps," he advised.

For example, someone who normally sleeps at 10 p.m. can move bedtime to 10:15 p.m. on Friday and 10:30 p.m. on Saturday.

"You move your bedtime and meals the same 15 minutes each time," La Puma said.

Dr. Saema Tahir, a New York City sleep medicine physician, also warned against using the additional hour as an excuse for excessive late-night activity during Halloween celebrations.

"Keep alcohol moderate, finish drinking a few hours before bed and avoid caffeine after early afternoon," Tahir advised.

She explained that alcohol can initially cause drowsiness but interfere with sleep later in the night. Caffeine can also remain in the body for several hours.

"Alcohol makes you drowsy at first but breaks up sleep in the second half of the night. Caffeine stays in your system for hours. Together, they can leave you more tired on Sunday than you would be with no time change at all," Tahir said.

La Puma recommends afternoon outdoor exposure to help the body adjust to the seasonal shift in daylight.

"You want to get outside at the right minutes, at the time of day and in the right place if you can," he said.

He emphasized that afternoon sunlight can influence the body's internal timing differently from morning exposure.

"Late-day daylight is different than morning daylight. Late-day daylight tells your body the day is running long, and it shifts later," La Puma explained.

After the initial adjustment, Tahir recommends getting outdoor light within an hour of waking throughout winter.

"Light is the strongest signal the body clock gets," Tahir said.

She added that evening light can delay the body's internal clock, while consistent morning exposure supports alertness and mood during darker months.

La Puma also recommends establishing a relaxing bedtime routine, including reading or writing in a paper workbook, drinking chamomile tea, taking a bath or using aromatherapy.

"Very specific things that tell your brain and body, 'I'm winding down so I can go to sleep,'" he said.

Other recommendations include avoiding caffeine after noon, stopping screen use at least an hour before bedtime and maintaining consistent sleeping and waking hours.

La Puma stressed the importance of following the same wake-up schedule throughout the week.

"Pick one wake-up time and keep it every day, weekdays and weekends," he advised.

He also linked sleep patterns to broader cardiovascular health.

"So, sleep and wake times have important effects on heart attack, stroke and cardiovascular mortality," La Puma said.

The National Institutes of Health recommends contacting a healthcare professional when persistent difficulty sleeping, daytime fatigue or sleep deprivation begins interfering with daily activities.

NBC Chicago also highlighted household maintenance tasks that homeowners should complete during the seasonal clock adjustment. Recommended preparations include replacing smoke and carbon monoxide alarm batteries, changing furnace filters and protecting outdoor plumbing against freezing temperatures.

Jacob Anderson, general manager of Precision Today HVAC, emphasized the importance of preparing outdoor water connections before colder weather arrives.

"Going into the cold weather, disconnect all hoses and sprinklers outside. You don't want to damage those," Anderson said.

AARP also recommends arranging chimney inspections, rotating mattresses and checking homes for potential fire hazards.

Meanwhile, the Auto Club Group AAA warned that earlier darkness could create additional challenges for motorists, pedestrians and cyclists.

"Drivers can expect a noticeable change in their commute almost overnight," spokesperson Mark Jenkins said.

He explained that changing sunlight conditions could affect visibility during both morning and evening travel.

"Morning sun glare can make it difficult to see the road ahead, while earlier darkness makes pedestrians and cyclists harder to spot in the evening. Slow down, leave extra space and stay focused, especially around intersections and crosswalks," Jenkins advised.

The seasonal clock adjustment also comes amid renewed congressional debate over making daylight saving time permanent. The Sunshine Protection Act passed the House in July 2026 and moved to the Senate.

The proposal would establish year-round daylight saving time while allowing states to opt out before the legislation takes effect. President Trump supports the measure, while Arkansas Sen. Tom Cotton has raised concerns about excessively late winter sunrises.

The legislation faces a deadline in early January, when the newly elected members of Congress are scheduled to take office. If lawmakers do not approve it before then, the proposal will need to restart the legislative process.

Most US phones should automatically display the correct time overnight on November 1 when automatic time updates are enabled. Daylight saving time is scheduled to return Sunday, March 14, 2027, at 2 a.m. local time.