Head straight to the Prime Meridian Line for the classic photo opportunity, then explore the Meridian Courtyard and take in the views across Greenwich and London. If time allows, step into the nearby exhibits for a quick look at the Observatory’s role in measuring longitude and establishing Greenwich Mean Time.
Royal Observatory Greenwich Timings
- Today
- Open 10:00–17:00
- Last Admission
- 16:15
Best time to visit the Royal Observatory
Weekday vs Weekend
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Pleasant
Crowded
Very Crowded
Closed
Peak season vs low season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Off Season
Moderate Season
Peak Season
How long should I spend at the Royal Observatory Greenwich?
Plan your visit around the time you have available. While 1.5–2 hours is ideal for seeing the Royal Observatory Greenwich’s main highlights, even a shorter stop lets you stand on the Prime Meridian Line and discover how astronomers helped shape modern timekeeping.
If you have 30–45 minutes
If you have 1 hour
Focus on the Prime Meridian Line, Flamsteed House and the Observatory’s most significant timekeeping displays. Look out for John Harrison’s marine timekeepers, which helped solve the challenge of calculating longitude at sea. This shorter route suits visitors fitting the Observatory into a wider Greenwich itinerary.
If you have 1.5–2 hours
Allow this much time for a more complete visit. Walk the Prime Meridian Line, explore Flamsteed House and the Octagon Room, and spend time with the historic clocks, marine timekeepers and astronomical instruments. You’ll also have time to appreciate the Observatory’s scientific history and pause at viewpoints overlooking Greenwich Park and the city.
If you have half a day
Take a slower visit to the Observatory, reading the exhibits and using the audio guide to understand its contributions to astronomy, navigation and timekeeping. Then continue to nearby attractions such as the National Maritime Museum, Queen’s House or Cutty Sark.
Frequently asked questions about Royal Observatory Greenwich opening times
Before its scheduled renovation closure, the Observatory is listed as open daily from 10am to 5pm, with last admission at 4:15pm. Check the official opening times before travelling, as hours can change.
Opening hours may vary around public holidays or during special events, and occasional closures can affect access. Check the Observatory’s official opening calendar and closure updates for the date you intend to visit.
The Observatory has offered extended summer hours, including evening openings in June, July, August and September 2026. These seasonal hours are date-specific, so check the official calendar rather than assuming late opening applies to your visit.
The last admission time is 4:15pm during standard opening hours, although some official pages may display a different time. Arrive earlier to leave enough time for the exhibits and check the date-specific ticket information before booking.
Booking online is recommended to secure an entry time, as tickets on the day depend on availability. Check the booking calendar before travelling, particularly if you have a tight itinerary or plan to visit other Greenwich attractions on the same day.
Guided tours and special events may run at specific times that differ from general admission. Check the details of your selected ticket or tour for its meeting time, duration and entry arrangements, and arrive at the stated time.
For a quieter visit, consider arriving near opening time on a weekday, when visitor numbers may be lower than during weekends and school holidays. Crowds vary, so this is not guaranteed; check ticket availability and opening updates before choosing a date.
Evening visits are possible only on dates when extended hours or scheduled events are available. The Observatory is not generally open late throughout the year, so confirm the hours for your chosen date before planning an evening visit.
Greenwich has rail, DLR, bus and river services, but departure times vary by route and day. Check your return journey in advance, especially if visiting during seasonal late openings or travelling onward from Greenwich in the evening.
No. In addition to occasional temporary closures, the Observatory is scheduled to close to the public from 2 November 2026 for a long-term renovation project. The Meridian Courtyard is expected to reopen in summer 2027, with the full site due to reopen in 2028. Check official updates before planning a future visit.
