- An imaginary line through the Pacific Ocean about corresponding to 180° longitude, towards the east that, by international agreement, the diary time is just one day sooner than into the west.
- an imaginary line at first glance associated with planet following (more or less) the 180th meridian
- An imaginary line on the Earth's surface at 180° longitude, mostly through the Pacific Ocean, to the east of which the calendar date is one day earlier than to the west.
Sentence for "International Date Line"
- (And you thought crossing the International…
Hypernym for "International Date Line"