The mornings are darker and you might be wondering when to "fall back" this year.
Beginning at 2 a.m. Nov. 7, you'll need to set your clocks back one hour, meaning – bonus! – you'll gain an extra hour of sleep.
In March, we "sprung forward," but lost an hour of sleep as clocks moved forward one hour from 2 a.m. to 3 a.m.
More:When is the fall equinox, and what does that mean for fall weather?
Why do we have daylight saving time?
In 1966, Congress passed the Uniform Time Act, which standardized the length of daylight saving time, which runs from March to November.
Daylight saving time begins on the second Sunday of March each year and ends on the first Sunday of November.
The Department of Transportation said daylight saving time saves energy, prevents traffic injuries and reduces crime. The DOT oversees time zones and the uniform observance of daylight saving time because time standards were first instituted by the railroad industry.
Who created daylight saving time?
Benjamin Franklin is often credited with first proposing daylight saving in his 1784 essay, "An Economical Project."
The idea wasn't seriously considered, however, until more than a century later when William Willetts, a British builder, fiercely advocated for it.
The current DST format was proposed in New Zealand by entomologist George Hudson.
In 1895, he recommended a two-hour time change because he wanted to have more daylight after work to go hunting for bugs in the summer.
What states have gotten rid of daylight saving time?
Not all states and U.S. territories participate in daylight saving time.
Hawaii and Arizona (with the exception of the Navajo Nation) do not observe daylight saving time, and neither do the territories of American Samoa, Guam, the Northern Mariana Islands, Puerto Rico and the U.S. Virgin Islands.
When does daylight saving time resume?
Daylight saving time will resume at 2 a.m. March 13.
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