Occasionally some closures may affect your visit to the Royal Observatory. Please see the table below for information.
| Date | What's closed? | Time | Reason |
|---|---|---|---|
| 8 September 2025 onwards | Peter Harrison Planetarium and Astronomy Centre | Long-term closure | First Light transformation project |
| Sunday 6 September 2026 | Whole site | Early closure at 5pm | |
| Monday 7 and Tuesday 8 September 2026 | Whole site | Early closure at 5pm | |
| Tuesday 8 September 2026 | Great Equatorial Telescope | All day | Private event |
| Thursday 10 September 2026 | Whole site | Early closure at 5pm | |
| Saturday 12 and Sunday 13 September 2026 | Whole site | Early closure at 5pm | |
| Tuesday 15 September 2026 | Whole site | Early closure at 5pm | Private event |
| Friday 25 September 2026 | Whole site | Early closure at 5pm | Private event |
| Wednesday 7 October 2026 | Whole site (and all other Royal Museums Greenwich sites) | Early closure at 3.30pm | Staff event |
Supporting your visit
Plan your visit to the Royal Observatory
Opening times, tickets, visitor information and helpful guides
Getting to Royal Museums Greenwich
Travel information for the National Maritime Museum, Royal Observatory Greenwich, Cutty Sark and Queen's House
Tickets and prices
Book tickets for the National Maritime Museum, Cutty Sark, Royal Observatory and Queen's House
Top things to do at the Royal Observatory
History-making discoveries and cutting edge astronomy at the home of Greenwich Mean Time
Visit Greenwich
Green space, historic London attractions and beautiful city views - discover the best that Greenwich has to offer