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facts about Daylight Saving Time 

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The first country to implement Daylight Saving Time was Germany in 1916 

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The United States first observed Daylight Saving Time during World War I in an effort to conserve energy 

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Daylight Saving Time is often referred to as "summer time" in other countries 

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Not all countries observe Daylight Saving Time. For example, most countries in Africa do not participate 

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Hawaii and most of Arizona do not observe Daylight Saving Time in the United States 

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In 2007, Daylight Saving Time in the United States was extended by four weeks, starting earlier in March and ending later in November.

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Russia used to observe Daylight Saving Time but abolished it in 2011 

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Daylight Saving Time is not observed in the state of Queensland in Australia 

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Some studies suggest that Daylight Saving Time may increase the risk of heart attacks and other health issues