How many time zones are there on the earth?How are they marked
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Every 15 longitudinal degrees , the time changed by an hour , thus creating 24 time zones around the world . Over the years , governments have adopted, altered or ignored Greenwich Mean Time (GMT) as they saw fit .
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A time zone is a region or area that observes the same standard time. The world is divided longitudinally into time zones, with each hour difference roughly 15 degrees apart. Due to some countries have half hour time zones, there are more than 24 times zones in the world.
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