Stand on the historic Prime Meridian of the World at the Royal Observatory Greenwich. Since 1884, all distances east and west have been measured from the Prime Meridian line in Greenwich.

Home to the Royal Observatory and the historic Prime Meridian line, Greenwich blends scientific history, maritime heritage and world-class museums. Visit the place that gave Greenwich Mean Time to the world, and discover the best that London's historic royal borough has to offer.

The Prime Meridian in Greenwich is marked by a metal line fixed into the Royal Observatory courtyard, and at night by a laser beam. The beam originates from a point above the Airy Transit Circle, the telescope used to determine the Greenwich Meridian.

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 …

It played a major role in the history of astronomy and navigation, and because the Prime Meridian passed through it, it gave its name to Greenwich Mean Time, the precursor to today's Coordinated Universal Time (UTC). The ROG has the IAU observatory code of 000, the first in the list. [2] .

The Royal Observatory, home of Greenwich Mean Time and the Prime Meridian, is located within Greenwich Park at the top of the steep hill overlooking the Queen's House and the National Maritime Museum.

2014年12月18日 · The Prime Meridian, also known as the Greenwich Meridian, passes through longitude 0° 0' 0'' and on its journey from pole to pole, it passes through England, France, Spain, Algeria, Mali, Burkina Faso, Togo, Ghana and Antarctica, dividing the earth into east and west, just as the Equator splits it into north and south. The meridian’s ...

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 Mean Time (GMT) was established in 1884 when, at the International Meridian Conference, it was decided to place the Prime Meridian at Greenwich, England. The line down the middle of this 1911 map is the prime meridian, shown passing through Greenwich.

2025年1月28日 · The Prime Meridian. The line marker outside the Observatory. Latitude and Longitude are the means by which a ship is able to discover its whereabouts, and thus be able to navigate safely. They are, of course, imaginary lines drawn on the face of the Earth.