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Royal Observatory Greenwich

Royal Observatory Greenwich is the historic observatory that defined the Greenwich meridian and helped establish the global system of longitude and timekeeping. Founded in 1675, it preserves the Airy Transit Circle, major astronomical instruments, and the public marker of the historic Prime Meridian.

Identity

Name
Royal Observatory Greenwich
Region
EU
Slug
royal-observatory-greenwich
Type
observatory

Details

Description
Royal Observatory Greenwich is the historic observatory that defined the Greenwich meridian and helped establish the global system of longitude and timekeeping. Founded in 1675, it preserves the Airy Transit Circle, major astronomical instruments, and the public marker of the historic Prime Meridian.
Established Year
1,675
Latitude
51.47488
Location
Blackheath Avenue, Greenwich, London SE10 8QY, United Kingdom
Longitude
0.001781
Operational Status
operational
Ownership
public

Links

Assets & Meta

Creation Time
7/11/2026, 4:43:58 AM
Updated Time
7/11/2026, 4:43:58 AM