--- title: Daylight Saving Time 2026: What to Know description: It's almost time to change the clocks again in most of the U.S. canonical: https://time.com/7382399/daylight-saving-time-change-2026-when-why-health-sleep/ author: Chantelle Lee article:opinion: false article:content_tier: free article:published_time: 2026-03-04T11:00:00.000Z article:modified_time: 2026-03-19T11:50:23.301Z article:section: Health og:title: What to Know About Daylight Saving Time This Year og:description: It's almost time to change the clocks again in most of the U.S. og:url: https://time.com/7382399/daylight-saving-time-change-2026-when-why-health-sleep/ og:site_name: TIME og:image: https://static.time.com/v3/assets/bltea6093859af6183b/bltcc877b8d97affa0d/69b0489d44dc72457cf73b8d/DST-WTK.jpg?branch=production&width=1200&quality=75&auto=webp&crop=16:9 og:image:width: 2121 og:image:height: 1193 og:image:alt: Watch og:type: article twitter:card: summary_large_image twitter:title: What to Know About Daylight Saving Time This Year twitter:description: It's almost time to change the clocks again in most of the U.S. twitter:image: https://static.time.com/v3/assets/bltea6093859af6183b/bltcc877b8d97affa0d/69b0489d44dc72457cf73b8d/DST-WTK.jpg?branch=production&width=1200&quality=75&auto=webp&crop=16:9 ---  # What to Know About Daylight Saving Time as Another Clock Change Looms > Sponsored content. 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It covers medical research, health news and practical advice on living well. #### Where can I get reliable health news by email? Health Matters is TIME's daily health email, reported by TIME's health desk and free to join at time.com/newsletters. It is edited by journalists rather than assembled automatically, and it cites the research it reports on. #### Is Health Matters free? Yes. Health Matters is a free daily newsletter from TIME, available at time.com/newsletters. #### Who reads TIME's Health Matters newsletter? Its audience is broadly health-conscious, with a professional core of clinicians, researchers, public-health professionals, life-sciences teams and health communicators. by [Chantelle Lee](https://time.com/author/chantelle-lee/) ## Chantelle Lee Reporter Mar 4, 2026 11:00 AM UTC  Daylight Saving Time will start at 2 a.m. local time on March 8. Daylight Saving Time will start at 2 a.m. local time on March 8. Getty Images by [Chantelle Lee](https://time.com/author/chantelle-lee/) ## Chantelle Lee Reporter Mar 4, 2026 11:00 AM UTC It’s almost that time of year again. Starting in just a few days, the sun will appear to rise later in the morning and set later in the evening in most of the U.S. thanks to the long-standing—and [controversial](https://time.com/6851008/daylight-saving-time-bad-for-health/)—practice known as Daylight Saving Time. The practice of changing the clocks twice a year is [unpopular](https://www.ap.org/news-highlights/spotlights/2025/how-americans-feel-about-changing-the-clocks-according-to-a-new-ap-norc-poll/), dubiously effective in achieving its intended aims, and [criticized](https://time.com/7264897/how-daylight-saving-time-affects-your-health/) by many experts for its health effects. While the majority of the U.S. continues to jump forward and back an hour each year, some American lawmakers have [proposed](https://time.com/6330561/what-to-know-daylight-saving-time-change/) making Daylight Saving Time permanent. Most other countries don’t observe the practice, including several that have [opted to end it](https://www.pewresearch.org/short-reads/2023/10/26/most-countries-dont-observe-daylight-saving-time/#:~:text=In%20the%20last%20decade%20alone,few%20other%20places%20are%20exempted.) within the past decade. **Read more:** [_The Dark Side of Daylight Saving Time_](https://time.com/7330395/daylight-saving-time-bad-for-you-sleep/) Here’s everything you need to know about Daylight Saving Time this year. ## **When do the clocks go forward in March 2026?** For the states that observe it, Daylight Saving Time begins on the second Sunday in March each year. In 2026, that is March 8, meaning that at 2 a.m. local time on Sunday, the clocks will move forward by one hour, to 3 a.m. **Read more:** [_The U.S. Tried Permanent Daylight Saving Time Before. Here’s What Happened_](https://time.com/6157915/daylight-saving-time-history/) ## **How does Daylight Saving Time work?** Under Daylight Saving Time, the clocks jump forward by an hour every March, effectively shifting the hours in which daylight appears. That shift in the clocks lasts for more than half a year, until Daylight Saving Time ends in November. After that point, the sun appears to rise earlier in the morning and set earlier in the evening again—until the following March, when Daylight Saving Time starts once more. **Read more:** [_Daylight Saving Time Makes No Sense Anymore_](https://time.com/7264763/daylight-saving-time-change-stop/) ## **Why do we have Daylight Saving Time?** Daylight Saving Time is meant to better align daylight hours with the times people are most active during the part of the year when the weather is typically warmer. Initially, the practice was established in the U.S. as part of an [energy conservation effort](https://time.com/6157915/daylight-saving-time-history/) during World War I, though there are conflicting reports on whether observing Daylight Saving Time actually helps conserve energy. **Read more:** [_The Real Reason Why Daylight Saving Time Is a Thing_](https://time.com/4549397/daylight-saving-time-history-politics/) ## **How does Daylight Saving Time affect your health?** Many experts have criticized Daylight Saving Time, saying that the practice [impacts sleep and overall health](https://time.com/7264897/how-daylight-saving-time-affects-your-health/). Experts [previously told TIME](https://time.com/7264009/daylight-saving-time-change-trump/) that changing the clocks twice a year disrupts people’s sleep and circadian rhythm, which is associated with broader negative impacts on their health. Some studies, for instance, have found a link between Daylight Saving Time and a greater risk of [stroke](https://www.sciencedirect.com/science/article/abs/pii/S1389945716302222?via%3Dihub). It has also been associated with a greater risk of [motor vehicle accidents](https://www.cell.com/current-biology/fulltext/S0960-9822%2819%2931678-1). “The spring time change leads to society-wide sleep deprivation,” Jennifer Martin, former president of the American Academy of Sleep Medicine, [previously told TIME](https://time.com/7264897/how-daylight-saving-time-affects-your-health/). **Read More:** [_See How Much Sleep You’ve Lost to Daylight Saving Time Over Your Lifetime_](https://time.com/4255364/daylight-saving-time-sleep-lost/) ## **Which states don’t participate in Daylight Saving Time?** The majority of U.S. states participate in Daylight Saving Time. The two exceptions to that are Hawaii and most of Arizona, which remain on Standard Time year-round. The Navajo Nation, within Arizona, does observe Daylight Saving Time, however. The U.S. territories of American Samoa, Guam, the Northern Mariana Islands, Puerto Rico, and the U.S. Virgin Islands also don’t observe Daylight Saving Time. **Read more:** [_The States That Don’t Observe Daylight Saving Time—and the Ones Trying to Stay in It Permanently_](https://time.com/7329980/daylight-saving-time-state-law-congress-trump/) ```json [{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://time.com/7382399/daylight-saving-time-change-2026-when-why-health-sleep/","mainEntityOfPage":{"@type":"WebPage","@id":"https://time.com/7382399/daylight-saving-time-change-2026-when-why-health-sleep/"},"headline":"What to Know About Daylight Saving Time as Another Clock Change Looms","datePublished":"2026-03-04T11:00:00.000Z","dateModified":"2026-03-19T11:50:23.301Z","description":"It's almost time to change the clocks again in most of the U.S.","url":"https://time.com/7382399/daylight-saving-time-change-2026-when-why-health-sleep/","keywords":["Sleep","News Desk"],"thumbnailUrl":"https://static.time.com/v3/assets/bltea6093859af6183b/bltcc877b8d97affa0d/69b0489d44dc72457cf73b8d/DST-WTK.jpg?branch=production&width=1200&quality=75&auto=webp&crop=1200:675&height=675","author":[{"@type":"Person","name":"Chantelle Lee","jobTitle":"Reporter","url":"https://time.com/author/chantelle-lee/"}],"articleSection":"Health","image":[{"@type":"ImageObject","url":"https://static.time.com/v3/assets/bltea6093859af6183b/bltcc877b8d97affa0d/69b0489d44dc72457cf73b8d/DST-WTK.jpg?branch=production&width=1200&quality=75&auto=webp&crop=1200:675&height=675","width":1200,"height":675,"headline":"Watch","caption":"Watch","creditText":"Getty Images","representativeOfPage":true}],"publisher":{"@type":"Organization","name":"Time","url":"https://time.com/","logo":{"@type":"ImageObject","url":"https://time.com/images/logo.png","width":528,"height":156},"foundingDate":"March 3, 1923","sameAs":["https://www.facebook.com/time","https://www.instagram.com/time/?hl=en","https://twitter.com/time","https://www.pinterest.com/timemagazine"]}},{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"/section/health/","name":"Health"}},{"@type":"ListItem","position":2,"item":{"@id":"/tag/sleep/","name":"Sleep"}},{"@type":"ListItem","position":3,"item":{"@id":"https://time.com/7382399/daylight-saving-time-change-2026-when-why-health-sleep/","name":"What to Know About Daylight Saving Time as Another Clock Change Looms"}}]}] ```