To fix this the Royal Observatory decided to set a standard time that everyone could set clocks to. This was called Greenwich Mean time(GMT). GMT became the only official time used in the UK ...

In 1884, an international conference decided that the Prime Meridian, which runs through Greenwich, would be the starting point for timekeeping. The line runs through the Royal Observatory ...

The Royal Observatory Greenwich is the home of Greenwich Mean Time and the Prime Meridian of the World. It is also home to London's only planetarium, the Harrison timekeepers and the UK's largest ...

Ryan Imperio has been named the Royal Observatory Greenwich’s Astronomy Photographer ... Crossing the field-of-view in just 0.2 seconds, ISS transits of the Sun are particularly rare to see ...

Herstmonceux Observatory, formerly owned by the Royal Observatory Greenwich, has been owned by Queen's University in Canada since the 1990s and leased to the Observatory Science Centre.