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What is GMT


Time-keeping from sundials to computer clocks

Global time, local clocks

At first it was the sun and time passed by day and by night, with shadows marking the intervals as long as the sun was up in the sky. The moon and the stars offered a measuring tool at night time.

There is a long way from using Nature's timepieces to the latest clocks and watches of ultra-precision. In between, Greenwich Mean Time(GMT) emerged as an essential point of reference.

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place Fast Find - start by typing GMT Tools - check and bookmark ⏲ Time zone converter by place 🌎 Time converter by zone ⓘ What is Greenwich Mean Time?