The home of GMT
All shows at the Peter Harrison Planetarium today (Friday 22 February) are now sold out. The Royal Observatory is still open for all visitors. For Planetarium ticket holders: please ensure you arrive at least 15 minutes before the show as late entry is not permitted.
Visit the Royal Observatory in Greenwich, London. Home of Greenwich Mean Time (GMT), the Prime Meridian of the world and London’s Planetarium.
Explore the fascinating mysteries of time and space
Make the most of your trip
Download our essential guide to the very best things to do and see at the Royal Observatory Greenwich.
Royal Observatory Greenwich is a quick and easy journey from central London, by DLR, rail or boat