A prime meridian, based at the Royal Observatory, Greenwich, in London, England, was established by Sir George Airy in 1851. By 1884, over two-thirds of all ships and tonnage used it as the reference meridian on their charts and maps.
Stand on the world-famous Meridian Line with one foot in the west and one foot in the east at the Royal Observatory. Enjoy one of the most loved views of London at the home of Greenwich Mean Time.
The meridian line in Greenwich represents the Prime Meridian of the world, Longitude Zero (0° 0' 0"). Every place on the Earth is measured in terms of its angle east or west from this line. Since 1884, the Prime Meridian has served as the reference point for Greenwich Mean Time (GMT).
Greenwich was chosen back in 1884 as the Prime Meridian of the world, Longitude Zero (0° 0' 0"). Every place on Earth is measured in terms of its angle east or west from this line (longitude), just as the Equator divides the northern and southern hemispheres (latitude).
The Royal Observatory in Greenwich is where east meets west at Longitude 0°. Visit the Prime Meridian Line. What is a meridian? A meridian is a north-south line, selected as the zero reference line for astronomical observations.By comparing thousands of observations taken from the same meridian it's possible to build up an accurate map of the sky.
Is the Greenwich Meridian in the Wrong Place? A GPS device does not show 0 degrees of longitude on the line marking the prime meridian at the Royal Greenwich Observatory in London, England.
Greenwich is notable for its maritime history and for giving its name to the Greenwich Meridian (0° longitude) and Greenwich Mean Time. The town became the site of a royal palace, the Palace of Placentia from the 15th century, and was the birthplace of many Tudors, including Henry VIII and Elizabeth I.
Greenwich meridian: Greenwich meridian, imaginary line used to indicate 0° longitude that passes through Greenwich, a borough of London, and terminates at the North and South poles. An international conference held in Washington, D.C., in 1884 designated “the meridian passing through the centre of the transit
Look out for the green laser which marks the Meridian Line in the evening sky from the top of the hill in Greenwich Park towards the London Skyline. Since the late 19th century, the Prime Meridian at Greenwich has divided the eastern and western hemispheres of the earth - just as the equator divides the northern and southern hemispheres.
Welcome to Greenwich. Home to the Meridian Line, Cutty Sark, the Royal Observatory, the National Maritime Museum, the Old Royal Naval College including the fabulous Painted Hall, London’s cable car, Greenwich Market, Greenwich Park and The O2 arena.