US daylight saving time: When do clocks change and why was it created?

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US daylight saving time: When do clocks change and why was it created?
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US daylight saving time: When do clocks change and why was it created?
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US daylight saving time: When do clocks change and why was it created?
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US daylight saving time: When do clocks change and why was it created?
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US daylight saving time: When do clocks change and why was it created?
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US daylight saving time: When do clocks change and why was it created?
US daylight saving time: When do clocks change and why was it
US daylight saving time: When do clocks change and why was it created?
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