You can try the full form of GMT and gain confidence at least in the meaning of GMT. Edumantra takes good care of you so buying books for competitive exams is not necessary. Additionally we would like to tell that the full form of GMT is Greenwich Meridian Time
GMT — Greenwich Meridian Time
GMT Full-Form stands for Greenwich Meridian Time. GMT is the local meantime at RGO (Royal Greenwich Observatory) in London. Earlier, it was utilized as the global standard of civil time. Currently, UTC (Coordinated Universal Time) has taken its place in that function. For civil purposes in the UK, UTC and GMT are considered equivalent.
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For navigation purposes, however, GMT and UT1 are considered equivalent. There is a difference of 0.9 seconds between the two-timing systems. Hence, GMT cannot be utilized for precision purposes.
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The speed of the Earth is uneven in its elliptical orbit. This, accompanied by the axial tilt of this planet, leads to the conclusion that noon GMT (that is, 12:00:00) is not occasionally the exact time when the Prime Meridian is crossed by the sun, and the sun reaches the sky’s highest point at that place. The time duration of this event is nearly sixteen minutes afternoon or before noon GMT. The time equation has been used by researchers to calculate this discrepancy.
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The bodies that are connected with the UK use the ‘GMT’ term. These bodies include Met Office, the Royal Navy, and the BBC Service. It is also used by other bodies in Arab Countries like OSN (Orbit Showtime Network), and the Middle-East Broadcasting Center. Apart from the UK, the commonwealth countries use this term abundantly.
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These countries include Malaysia, India, New Zealand, Pakistan, South Africa, Australia, and other nations in the eastern hemisphere of the planet. In Britain and some other nations, GMT is used as a legal time during the winter season.
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The European territories or nations that use GMT for the entire year are Iceland and Greenland. The nations in Europe that use BST or IST in the summer season and GMT in its winter season include Jersey, Ireland, Guernsey, and the Isle of Man. The African nations that use GMT the entire year are Sierra Leone, Sao Tome, and Principe, Mauritania, Liberia, Guinea, Gambia Burkina Faso, Togo, Senegal, Saint Helena, Mali, Guinea-Bissau, Ghana, and Cote d’Ivoire.