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Time to Spring Ahead

TELLING TIME A clock displays the time in New York City’s Grand Central Terminal. BEATA ZAWRZEL—NURPHOTO/GETTY IMAGES

On March 9, most people in the U.S. saw their clocks jump an hour into the future. This was the start of daylight saving time (DST). DST involves setting clocks forward by one hour in the spring. Clocks are turned back an hour in the fall. This began in the U.S. during World War I. It started as a way to save energy. DST gave people more daylight during the warm months.

DST became federal law in 1966. The law allows states to opt out. Hawaii doesn’t participate. Neither do residents in much of Arizona. Some people want to end DST, arguing that it disrupts sleep. President Donald Trump has expressed support for ending the practice. On social media in December, he called DST “inconvenient, and very costly.”

At press time, there’s no official plan in place to end DST.