The International Date Line -LRB- IDL -RRB- is an imaginary line on the surface of the LOCATION@1 opposite the Prime Meridian where the date changes as one travels east or west across it .

The International Date Line -LRB- IDL -RRB- , also known as just the Date Line , is an imaginary line on the surface of the LOCATION@1 , going from north to south in the LOCATION@2 .
