Nov. 18, 1883: Railroad Time Goes Coast to Coast

1883: U.S. and Canadian railways adopt five standardized time zones to replace the multiplicity of local times in communities across the continent. Everyone would soon be operating on “railroad time.”
Noon on a well-made, properly paced sundial is whenever the sun is highest right there. The advent of mechanical timekeeping in the Middle Ages didn’t change [...]

Source: http://www.wired.com/thisdayintech/2010/11/1118railroad-time-zones/

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