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Daylight saving time

ELLSWORTH AIR FORCE BASE, S.D. -- On March 14 at 2 a.m. the United States will participate in daylight saving time.

Clocks around the country should be moved one hour ahead, in observance of this event.

Federal law dictates that daylight saving time applies to 2 a.m. on the second Sunday of March until 2 a.m. on the first Sunday of November in areas that are not specifically exempt.

Ellworth will be observing Mountain Daylight Time, resetting the clocks on base according to the local time.

Daylight saving time has been observed in the United States since World War I as a means to save energy for war production by utilizing the longer daylight hours between April and Oct. In 2007, it was extended by four weeks as part of the Energy Policy Act of 2005.

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