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American and Canadian railroads abolished the chaos of hundreds of local sun-bas
Featured Event 1883 Event

November 18

Railroads Standardize Time: Five Zones Unite North America

American and Canadian railroads abolished the chaos of hundreds of local sun-based times by instituting five standardized continental time zones on a single day. The reform ended the nightmare of scheduling trains across cities where clocks disagreed by hours, and it forced every telegraph office and town clock in North America to synchronize simultaneously.

November 18, 1883

143 years ago

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