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5.Why is the Standard Meridian selected by a country a multiple of 7.5*? |
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Answer» The world’s time zones are based on the fact that the Earth moves through 15 degrees of longitude each hour. Therefore, there are 24 standard time zones (24 hours x 15 degrees = 360). Time zones are counted from the Prime Meridian, with each time zone based on a central meridian, counted at 15 degree intervals from the Prime Meridian, and extends 7.5 degrees to either side of the central meridian. There are some deviations in some places based of the region suitability. |
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