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Standard Time Act of 1918

3:20

When Did Time Zones Become a Thing? (Short Animated Documentary)

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How did trains standardize time in the United States? - William Heuisler

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Daylight Saving Time Story

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Standard Time

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Railroad Standard Time

The Standard Time Act of 1918, also known as the Calder Act, was the first United States federal law implementing Standard time and Daylight saving time in the United States. It authorized the Interstate Commerce Commission to define each time zone.
    • General