Who established the prime meridian?

Answer 1

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.

Answer 2

Sir George Airy in 1851 at Greenwich, a suburb of London. In 1884 it was agreed at an international conference in Washington DC, to use the Greenwich Prime Meridian as the internationally accepted line of 0 degrees longitude..

Answer 3

Sir George Airy established the Greenwich (Prime) Meridian in 1851