GMT stands for Greenwich Mean Time, the local clock time at Greenwich. From 1884 until 1972, GMT was the international standard of civil time. Though it has now been replaced by Coordinated Universal Time (UTC), GMT is still the legal time in Britain in the winter, used by the Met Office, Royal Navy and BBC World Service. Areas with same time currently (UTC +0). Greenwich Mean Time ( GMT ) has no offset from Coordinated Universal Time (UTC). This time zone is in use during standard time in: Europe, Africa, North America, Antarctica. See full time zone map Where and When is GMT Observed? Europe European countries/territories using GMT all year: Greenland ... GMT Full Form in Dentistry In dentistry, gingival marginal trimming ( GMT ) is a procedure that involves removing excess gum tissue from around the margins of a tooth. What is the full form of GMT ? The GMT full form is Greenwich Mean Time . This refers to the solar time displayed at the Royal Observatory in Greenwich, London, England. Noon in Greenwich is when the sun is above the prime meridian. This imaginary line divides the Earth into two parts, the eastern and western hemispheres.
