Beginning Nov. 6 at 2 a.m., millions of people across the United States will turn their clocks back one hour to end daylight saving time.

Hawaii and Arizona, except for the Navajo Nation reservation, don't recognize daylight saving and no change in the time will occur in those two states.

For residents of the 48 other states, clocks are typically reset back before going to bed. Mobile phones and other smart devices change times automatically.

Daylight saving time started March 13 and this could be the last reset if the U.S. House of Representatives passes a bill approved earlier in the Senate that would permanently end the time changes starting in 2023. A vote, however, has yet to be scheduled.

Supporters of the Sunshine Protection Act introduced by Sen. Marco Rubio, a Florida Republican, say the law would mean brighter afternoons and more economic activity.

"I know this is not the most important issue confronting America, but it's one of those issues where there's a lot of agreement," Rubio said at the time. "If we can get this passed, we don't have to do this stupidity anymore."

He added, "Pardon the pun, but this is an idea whose time has come."

Daylight saving time was first established in the 1960s when Congress passed the Uniform Time Act.

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Sunday, at 2 a.m. EST, clocks will spring forward for Daylight Saving Time and some could lose sleep or have their days completely thrown off. Reuters
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Daylight Saving Time