The home of GMT
- Royal Observatory
- Meridian Line
- Cutty Sark
- Planetarium shows
- Free museums
Due to important restoration works, the Meridian Gallery and Building will be closed to our visitors as of 7th of January until 15th of February 2019. Flamsteed House, the Octagon Room, Meridian Line, Great Equatorial Telescope and Meridian shop will be accessible as normal.
Stand on the historic Prime Meridian of the World at Royal Observatory Greenwich, the home of Greenwich Mean Time (GMT).
Since the late 19th century, the Prime Meridian at Greenwich has divided the eastern and western hemispheres of the earth - just as the equator divides the northern and southern hemispheres.
In 1884 the Prime Meridian was defined by Transit Circle telescope at the Royal Observatory which was built by Sir George Biddell Airy, the 7th Astronomer Royal, in 1850. The cross-hairs in the eyepiece of the telescope precisely defined Longitude 0° for the world.
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