Answer: Until 1883, every city and town in the United
Chapter , Problem 10(choose chapter or problem)
Until 1883, every city and town in the United States kept its own local time. Today, travelers reset their watches only when the time change equals 1.0 h. How far, on the average, must you travel in degrees of longitude between the time-zone boundaries at which your watch must be reset by 1.0 h? (Hint: Earth rotates \(360^{\circ}\) in about 24 h.)
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