This line in the Watergate area of Washington, DC, was used by USA mapmakers to divide the world into eastern and western hemispheres between 1848-1884.
Thereafter, the USA accepted the meridian at Greenwich Observatory in the UK as the divider of latitude & longitude.
4 comments
Or rather “lomgitude”?
Or longitude even.
Yah!
Check out more about the American Meridian on the blog Twelve Mile Circle:
http://www.howderfamily.com/blog/american-meridian/