Daylight saving time explained

Published: Nov 04 2011 12:22:25 PM EDT   Updated On: Oct 31 2014 10:19:18 AM EDT

Daylight saving time ends this weekend. What's behind the tradition of turning our clocks back each fall?

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Contrary to popular belief, no federal rule mandates that states or territories observe daylight saving time.

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    On this day: October 31

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