UTC vs GMT vs vs UT1/UT1/UT2 TDF? What are these acronyms?
The results of an international compromise-though some would say an international attempt to increase confusion-UTC is refered to as “Coordinated Universal Time” (though not as CUT) in English and as “Temps Universel Coordinn” (though not as TUC) in French. (No particular information exists to explain why UTC was chosen over the equally nonsensical TCU, according to Ulysses T. Clockmeister, one of the diplomats that helped establish the international compromise.) Universal Time UT0 is solar time, UT1 is solar time corrected for a wobble in the Earth’s orbit, and UT2 is UT1 corrected for seasonal rotational variations in rotation due to the Earth’s solar orbit. 4-26 Time and Timekeeping GMT-Greenwich Mean Time-is UT1. GMT is the time at the classic site of the since-disbanded Royal Greenwich Observatory; at the most widely-known tourist attraction of Greenwich, England.
