Daylight saving time explained

Published On: Nov 04 2011 11:22:25 AM CDT   Updated On: Mar 07 2014 01:00:00 AM CST

What's behind the tradition of turning our clocks ahead each spring?

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The idea of daylight saving time was introduced nationwide in 1918, when Congress formally approved the time zones the U.S. railroad industry had been following since 1883, according to National Geographic.

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