Don’t Forget to Change Your Clocks Tonight

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When Does the Clock Time Change Occur?

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Daylight saving time requires an adjustment in the spring and fall.

Daylight saving time changes the time twice per year to increase the duration of daylight hours into the evening during the summer months. In areas that practice daylight saving time, the clocks move forward an hour in the spring and move back an hour in the fall.

  1. Spring Forward

    • On the second Sunday of March at 2 a.m., the clock time goes forward one hour to 3 a.m. This means people who live in areas that use daylight saving time start and end their routines an hour earlier than they normally do. This, coupled with extended daylight hours of summer, means daylight can extend well into the evening.

    Fall Back

    • On the first Sunday of November at 2 a.m., the clock time goes back one hour to 1 a.m.


    • Supporters of daylight saving time claim that it saves energy by reducing the need for artificial lighting in the early evening. The practice also benefits businesses that gain traffic in the well-lit, early evening hours of summer, such as retailers, restaurants and sports leagues.


    • Daylight saving time was first proposed by Benjamin Franklin, who suggested to Parisians that they save money on candles by waking up earlier and taking advantage of the sunlit hours. The first use of daylight saving time in the United States occurred during World War I but was repealed after the war ended. The U.S. government issued the Uniform Time Act of 1966 to standardize, but not require the use of, daylight saving time across the country.


    • The clock change does not occur in Hawaii, American Samoa, Guam, Puerto Rico, the Virgin Islands and most of Arizona. These regions use standard time the entire year.



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