結果 : when did daylight savings time begin this year
2:20

Daylight Saving Time 101 | National Geographic

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Do you know the true origin story of daylight saving time?

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Fixing Daylight Saving Time Is THIS Easy

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Donald Trump vows to end daylight saving time

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Neil deGrasse Tyson Explains Daylight Saving Time

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Daylight Savings Time for Kids

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The case for getting rid of daylight-saving time

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Daylight Saving Time 101 | National Geographic

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Daylight Saving Time: Why do we change our clocks?

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Why Experts Say Permanent Daylight Saving Time is Unhealthy

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Senate approves permanent Daylight Saving Time

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Trump wants to end Daylight Saving Time permanently

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Stephen Fry on the history of Daylight Saving Time - BBC iWonder

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What is Daylight Saving Time? | CNBC Explains

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How Did We Get Here: Oregon's Daylight Saving Time

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When will daylight savings time become permanent?

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