National Geographic News, Reporting Your World Daily

Thursday, September 2, 2010

Photo: Daylight Saving Time History in the U.S.


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Construction workers stand in silhouette against a clock face in the Old Post Office building in Washington, D.C. This Sunday, November 2, 2008, at 2 a.m. marks the start of daylight saving time in the United States. Most Americans will turn their clocks ahead one hour.

Photograph by Volkmar K. Wentzel, copyright National Geographic Society