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About GMT
GMT (Greenwich Mean Time) is one of the world’s oldest time standards, based on the mean solar time at the Royal Observatory in Greenwich, London. It is widely used as a reference time zone across the globe.
The time zone offset of GMT is UTC+00:00, which means it is the same as Coordinated Universal Time (UTC) with no time difference.
GMT does not observe daylight saving time, so the time remains consistent throughout the year.
GMT is commonly used in aviation, navigation, weather systems, and global communication as a baseline for time coordination across different countries.
Major cities and regions using GMT or closely related time standards include London (winter), Dublin, Lisbon, and several West African countries.