Question

What is the time difference between IDL and Prime Meridian?

Answer 1

Answer:

the difference is 180 degree of longitude.

Explanation:

There are two different [imaginary] lines on the earth surface directly opposite each other. The prime meridian connect's the north and south poles and runs through Europe and Africa. The international Date line also connect's the north and south poles, but runs down the other side of the earth, through the Pacific Ocean. If you stand at any point on either one of them (expect at the north or south poles) then you can't see any point on the other one.

hope this will help you