Daylight saving time explained

Published On: Nov 04 2011 09:22:25 AM PDT   Updated On: Oct 30 2015 07:59:43 AM PDT

Daylight saving time begins this weekend. What's behind the tradition of pushing our clocks ahead each spring and setting them back each autumn?

DST Clock 3
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Ozgur Alican/

Part of the 1918 law also legislated for the observance of daylight saving time nationwide, but that section was repealed and the matter left to local jurisdictions a year later in 1919.


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