difference b/w international dateline and prime meridian
The difference between International Date Line and Prime Meridian is -
The difference is 180 degrees of longitude. They're two different [imaginary] lines on the earth's surface, directly opposite each other. The Prime Meridian connects the north and south poles and runs through Europe and Africa. The International Date Line also connects 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 (except at the north or south pole), then you can't see any point on the other one.