You get an extra hour of sleep Saturday night, courtesy of the federal government.
Daylight-saving time will end at 2 a.m. Sunday. If you have clocks that won’t automatically fall back from 2 to 1 a.m., you may want to set them back Saturday night.
Daylight-saving time was first introduced in the U.S. in 1918, and it aims to “keep the hours of daylight coordinated with the time that most people are active,” according to the National Institute of Standards and Technology. It is believed to save energy because more people may be spending more time outside in the evening.
Forty-eight U.S. states adhere to the semi-annual clock adjustments — Arizona, Hawaii, Puerto Rico, American Samoa and the U.S. Virgin Islands don’t.
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Arizona has held out largely because of the weather, because the hot summer sun wouldn’t set until 9 p.m.
The practice has come under an increasing amount of criticism — an Arizona Republic editorial described it as “like cutting a foot off the top of a blanket, then sewing the piece onto the bottom of the blanket, and expecting to have a blanket that is a foot longer than it was.”