Until November 18th, 1883, railroads across the United States operated under 53 different time schedules, differentiated on railroad maps by a complicated system of colors. For travelers, time shifts meant constant confusion and, frequently, missed trains. And then, at noon on Sunday, November 18th, 1883, railroads across the North American continent shifted their schedules to conform to a new standard time. Under the new system, North America would have just five time zones.
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