Greenwich Mean Time Exact time now, time zone, time difference, sunrise sunset time and key facts for Greenwich Mean Time (GMT)
Greenwich Mean Time - Wikipedia Greenwich Mean Time (GMT) is the local mean time at the Royal Observatory in Greenwich, London, counted from midnight At different times in the past, it has been calculated in different ways, including being calculated from noon; [1] as a consequence, it cannot be used to specify a particular time unless a context is given
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