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The Royal Observatory, Greenwich (ROG; [1] known as the Old Royal Observatory from 1957 to 1998, when the working Royal Greenwich Observatory, RGO, temporarily moved south from Greenwich to Herstmonceux) is an observatory situated on a hill in Greenwich Park in south east London, overlooking the River Thames to the north.
The Greenwich meridian is a prime meridian, a geographical reference line that passes through the Royal Observatory, Greenwich, in London, England. [1] From 1884 to 1974, the Greenwich meridian was the international standard prime meridian, used worldwide for timekeeping and navigation.
Greenwich Pier is a major stop for a number of river operators including: Uber Boat by Thames Clippers, which operates a commuter catamaran service between Greenwich and Central London, via Embankment, Tower Millennium Pier and Canary Wharf. This service also extends down river to The O 2 and Barking Riverside Pier.
His Majesty's Nautical Almanac Office (HMNAO), now part of the United Kingdom Hydrographic Office, was established in 1832 on the site of the Royal Observatory, Greenwich (ROG), where The Nautical Almanac had been published since 1767. HMNAO produces astronomical data for a wide range of users, such as astronomers, mariners, aviators, surveyors ...
The Royal Observatory with the time ball atop the Octagon Room. Greenwich Mean Time (GMT) is a term originally referring to mean solar time at the Royal Observatory, Greenwich, which overlooks the River Thames from a hill in Greenwich Park.
Royal Observatory, Wall and Clock to Right of Entrance Gates. More images. Cutty Sark: Greenwich: Museum: By 1973: ... Greenwich: Gate Pier: 1697: 8 June 1973
It shows Greenwich Mean Time all year round. The Shepherd Gate Clock) is mounted on the wall outside the gate of the Royal Observatory, Greenwich building in Greenwich, Greater London. The clock, an early example of an electrically connected clock system, was a sympathetic clock mechanism controlled by electric pulses transmitted by a motor ...
At the latitude of the Royal Observatory, Greenwich the difference is 102 metres (335 ft). [ 1 ] [ 2 ] [ a ] It is the reference meridian of the Global Positioning System (GPS) operated by the United States Space Force , and of WGS 84 and its two formal versions, the ideal International Terrestrial Reference System (ITRS) and its realization ...