1851.
George Airy
Who invented the Prime Meridian you ask? the answer is Sir George Airy. Yes it's true Sir George Airyestablished the Prime Meridian in 1851, at the Royal Observatory, Greenwich.
Sir George Airy established the Greenwich (Prime) Meridian in 1851.
The Royal Observatory, Greenwich was established as the prime meridian in 1851 by Sir George Airy, the Astronomer Royal. By 1884 over two-thirds of all shipping were using it as the reference meridian on their maps. In that year the International Meridian Conference adopted it as the international standard prime meridian line.
Greenwich, England in the UK. The arbitrary longitudinal line includes the location of the Royal Observatory, and was established as the Prime Meridian in 1884 (adopted by France in 1911). After appearing in charts by Nevil Maskelyne from 1765 to 1811, it was officially adopted by Sir George Airy (Astronomer Royal) in 1851.
The concept of zero degree longitude, also known as the Prime Meridian, was established by the 1884 International Meridian Conference held in Washington D.C. Sir George Airy, the Astronomer Royal of the United Kingdom, played a key role in determining the location of the Prime Meridian at the Royal Observatory in Greenwich, London. However, it is important to note that the concept of longitude and the need for an agreed Prime Meridian had been discussed and developed by many scientists, navigators, and cartographers over centuries prior to this conference.
George airy
In October of 1884, at the request of U.S. President Chester Arthur, 41 delegates from 25 nations met in Washington D.C. for the International Meridian Conference. There it was decided by all that the Greenwich Meridian will be the official Prime Meridian due to its popularity. John Flamsteed (1646-1719), was appointed Astronomer Royal by King Charles 2 in 1675 and given permission to build an observatory in Greenwich in South-East London on the site of the Prime Meridian. The observatory is still there and is open to visitors where the line is clearly marked on the ground. It is possible to stand on the site with one foot in the Eastern Hemisphere and the other in the Western Hemisphere.
It was chosen because, at the time England was the biggest country and superpower at the time. So the agreement was to run the prime meridian through Greenwich. It is also the closests to the middle of the earth's sphere.
George Biddell Airy died on 1892-01-02.
George Biddell Airy was born on 1801-07-27.
The Prime Meridian runs through London because it was established by Sir George Airy. The choice of location for a prime meridian is entirely arbitrary, so a British scientist chose a line passing through the astronomical observatory at Greenwich in London.