Why Do We Switch Our Clocks Forward and Back Every Year?

Daylight Saving Time (DST) officially ends at 2 a.m. on Sunday, at which time clocks and watches are to be set back one hour, to standard time, until DST resumes on March 8, 2020. These biannual rituals were written into U.S. law in 1966.

Why, exactly, do we fiddle with moving our clocks forward and back an hour twice a year? Snopes.com’s David Mikkelson explains.

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