+The International Date Line is an imaginary line on Earth's surface, defining the boundary between one calendar day and the next. Primarily traversing the [Pacific Ocean](/wiki/pacific_ocean), it generally follows the 180° [longitude](/wiki/longitude) meridian, where crossing changes the [calendar](/wiki/calendar) day.
+## See also
+- [Time Zone](/wiki/time_zone)
+- [Prime Meridian](/wiki/prime_meridian)
+- [Greenwich Mean Time](/wiki/greenwich_mean_time)
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