The Royal Observatory in Greenwich is the home of Greenwich Mean Time (GMT) and the Prime Meridian of the world.
What is a meridian?
A meridian is a north-south line selected as the zero reference line for astronomical observations. By comparing thousands of observations taken from the same meridian it is possible to build up an accurate [...]
Archive for the tag 'Prime Meridian'
Filed under Heritage, Holidays, London 2014, Science & Nature
The Prime Meridian
8 Comments CherryPie on Sep 12th 2014
