As winter approaches, Americans only have a few more weeks before adjusting their clocks for the second time this year.

According to USA Today, daylight saving time, which is “a period of the year between spring and fall when clocks in most parts of the United States are set one hour ahead of standard time” practiced by most states in the U.S., is coming to an end in two weeks. Clocks will “fall back” and offer those in states that observe daylight saving time an extra hour of sleep, early sunsets, and more hours in the dark of night.

Read on for everything to know about the end of daylight saving time.

Daylight saving time ends on Nov. 2 at 2 a.m.

According to ABC News, daylight saving time starts on the second Sunday of March at 2 a.m., during which clocks “spring forward” an hour. The period concludes on the first Sunday of November at the same time, during which clocks “fall back” an hour.

This year, daylight saving time, which was implemented in 1918 as a means of saving on energy consumption during World War I, will end a day earlier than last year, concluding on Nov. 2. It’s the second-earliest possible date for the time change.

Hawaii, New Mexico, Utah and most of Arizona do not participate in the period

But not every state in America follows daylight saving time. According to the Department of Transportation, Hawaii, New Mexico, Utah and the majority of Arizona, except the Navajo Nation which stretches across the state, do not participate in the period.

U.S. territories like American Samoa, Guam, the Northern Mariana Islands, Puerto Rico and the U.S. Virgin Islands also do not follow daylight saving time.

Trump has called daylight saving time “inconvenient” and “costly”

According to USA Today, there have been efforts to get rid of daylight saving time. President Donald Trump has supported axing the period, calling it “inconvenient” and “very costly to our Nation” in December.

More recently, Trump has shared that it’s been difficult to gather support for abolishing daylight saving time.

“This should be the easiest one of all, but it’s a 50-50 issue. If something’s a 50-50 issue, it’s hard to get excited. I assume people would like to have more light later, but some people want to have more light earlier, because they don’t want to take their kids to school in the dark,” Trump said in March, Reuters reported. “A lot of people like it one way, a lot of people like it the other way, it’s very even.”

A month later, Trump said the House and Senate should advocate for more daylight during the day, which is more aligned with his 2019 stance on daylight saving time, Politico reported.

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