The establishment of a Royal Observatory in Greenwich, London was proposed in 1674 by Sir Jonas Moore who, in his role as Surveyor-General of the Ordnance, persuaded King Charles II to create the observatory, with John Flamsteed installed as its director

The establishment of a Royal Observatory in Greenwich, London was proposed in 1674 by Sir Jonas Moore who, in his role as Surveyor-General of the Ordnance, persuaded King Charles II to create the observatory, with John Flamsteed installed as its director.

Royal Observatory, Greenwich (ROG) played a major role in the history of astronomy and navigation, and because the Prime Meridian passes 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.

Attribution: Kjetil Bjørnsrud

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