Research topic: Greenwich mean time

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Greenwich mean time

The Columbia Encyclopedia, Sixth Edition
Greenwich mean time or Greenwich meridian time (GMT), the former name for mean solar time at the original site of the Royal Observatory in Greenwich, England, which is located on the prime meridian . In 1925 the numbering system was changed to make GMT equivalent to civil time at the prime meridian, and in 1928 the International Astronomical Union changed the designation of the standard time of the prime meridian to universal time (UT), which is now in general use. Author not available, GREENWICH MEAN TIME. , The Columbia Encyclopedia, Sixth Edition 2007 ... Read more
Greenwich Mean Time
Greenwich Mean Time (GMT) The mean solar time on the Greenwich...uniformity. However, it was only in 1880 that Greenwich Mean Time became the legal time throughout Great Britain...universal time) but it is still widely known as Greenwich ... Read more
Greenwich Mean Time
Greenwich Mean Time (GMT) Local time at Greenwich , London, situated on the prime meridian (0° longitude ) that passes through the Old Royal Observatory. It has been used as the basis for calculating standard time in various parts of the world since 1884. Read more

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