Question

What is called 1800

longitude?​

Answer 1

Answer:

There was an agreement world over that the longitude passing through Greenwich Observatory near the city of London will be considered as the Prime Meridian. It is considered to be 00 Longitude and from it we count 1800 eastward as well as 1800 westward.

Answer 2

Answer:

There was an agreement world over that the longitude passing through Greenwich Observatory near the city of London will be considered as the Prime Meridian. It is considered to be 00 Longitude and from it we count 1800 eastward as well as 1800 westward.