The Hour That Throws a Week: Clocks Fall Back Nov. 1

Details as of Oct. 9, 2026. Under current federal law, daylight saving time ends the first Sunday in November and begins the second Sunday in March. Hawaii and most of Arizona do not change. The Navajo Nation in Arizona does. Congress has not changed that schedule. The House passed a permanent daylight time bill, the Sunshine Protection Act, 308-117 on July 14, 2026, according to The Philadelphia Inquirer. The Senate had not voted on this bill as of Fox 7 Austin’s July 16 report, and it is not law.

I go to bed around the same time and get up around the same time. One hour is enough to throw a week. I am worn out, I have trouble concentrating, and I drink more coffee just to start. The dogs have a bathroom schedule and a meal schedule. If you forget that 7:30 a.m. is 7:30 a.m., they are there to remind you. It takes them a few days too. I have wondered how many other households lose that same week, what it costs in work, and what it does to kids who have to be on a bus.

The clocks fall back at 2 a.m. local time on Sunday, November 1, when 2 a.m. becomes 1 a.m. Sunset will come about an hour earlier by the clock than the day before. Phones and computers reset themselves. The oven, the car and the kitchen clock need to be reset by hand. The next spring-forward is Sunday, March 14, 2027.

What the two changes do

A 2026 systematic review of 157 studies from 36 countries, by Steponenaite and colleagues, linked the spring change, the lost hour, to more heart attacks and, especially in the United States, to fatal traffic crashes. The same review linked it to fewer crimes involving physical harm. A 2024 meta-analysis of 12 studies, by Hurst and colleagues, put the heart-attack risk about 4 percent higher in the first few weeks after the spring change, though the studies varied considerably. The fall change, the gained hour, lined up with lower death rates overall and fewer workplace accidents, and with more physical-harm crimes. Summer months spent on daylight time, compared with summer months on standard time (the winter clock), were linked to fewer deaths and fewer traffic accidents, a separate comparison from the spring-change findings above. That finding covers summer only, so it does not show what year-round daylight time would do. The Steponenaite review concluded that the changes are not uniformly harmful and that the evidence is limited. It issued no formal policy recommendation, but said the heart-attack finding supports ending the changes and that, if they end, standard time would be favored.

Sleep loss is the explanation most often proposed for those links, but the review found little consistent evidence of sleep change after the spring shift and calls the proposed mechanisms speculative. It also noted that standard time is potentially linked to shorter winter sleep, and that the sleep evidence behind its lean toward standard time is limited. The review also raises darker morning roads as a possible reason for the crash numbers. In my house, the gained hour is a gift on Monday and a problem by Thursday, when the evening is dark and the dogs are still on the old hour. In my house, a few days of the new pattern is what resets the dogs, the same way it resets a person who will not move bedtime.

Work and school

There is no clean national figure for “hours of work lost to the clock change.” PBS has reported a RAND-linked estimate of about $411 billion a year in lost productivity and health care costs from insufficient sleep in the United States. That covers chronic short sleep over a whole year, and no one has measured the clock change alone.

Sleep effects vary by place. A 2019 study in the Journal of Health Economics compared areas on either side of U.S. time-zone borders and found that an extra hour of evening sunlight cut sleep by about 19 minutes a night on average. That matters most for permanent daylight time, which would push sunsets later all year. People with fixed early start times have the least room to adjust. I have a fixed wake-up, so I am in that group.

Teenagers are a particular concern. Adolescents have a delayed body clock into their late teens, and early school start times already work against it. An analysis in the Canadian Medical Association Journal (CMAJ), published Oct. 5 by researchers in British Columbia, cites a Florida study linking more sunlight before school, which standard time provides, to higher math and reading scores among adolescents. One of its authors, Ralph Mistlberger of Simon Fraser University, quoted by CP24, uses the term social jet lag for the mismatch between a person’s social calendar and body clock. The authors concluded that the health evidence favors permanent standard time, and they recommend ways to soften the effects, such as later or more flexible school and work start times, where daylight time stays. The British Sleep Society and the Sleep Research Society also favor permanent standard time. The 2026 review said the evidence behind position statements like these is not comprehensive.

According to CP24, British Columbia’s government gave improved health, less family disruption, simpler scheduling and winter evening light as reasons for permanent daylight time, and a 2019 online survey in British Columbia found 93 percent of more than 223,000 participants preferred permanent daylight time. The CMAJ authors say the survey offered only two options, daylight time or switching clocks, and it left out permanent standard time.

The House bill

Supporters of the House bill to make daylight time permanent, quoted by Fox 7 Austin, say it would mean less sleep disruption, more winter evening light and fewer injuries and crashes, and opponents warn of sunrises near 9 a.m. in parts of the country.

Editor written. AI used for spelling and grammar only.