The Greenwich Prime Meridian is the internationally recognized line of 0 degrees longitude.
The longitude Prime Meridian divides the Earth into Eastern and Western Hemispheres.
The decision to establish the Prime Meridian at Greenwich was made at the International Meridian Conference in 1884.
The universal Prime Meridian serves as the reference point for time zones around the world.
The choice of the Prime Meridian as an arbitrary line was based on historical reasons rather than scientific ones.