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Why do we have time zones?

April 26, 2017Geography Mathematics time zones

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Why do we have time zones?

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The earth is constantly turning on its axis.If people everywhere set their clocks to the same time,midnight will be in the middle of the night on one side of the globe and the middle of the day on the opposite side.To avoid this problem,the earth is divided into artificial time zones.These generally follow lines of longitude–imaginary lines running from the North pole to South pole.There have been 24 time zones each of 15 degree longitude and an hour apart.Those to the east are ahead of Greenwhich by one hour per zone;those to the west are behind one hour each.