+The **Date Line** is an imaginary line on Earth's surface that separates one [calendar day](/wiki/Calendar_Day) from the next. Predominantly following the [180th meridian](/wiki/180th_Meridian) in the Pacific Ocean, crossing it means travelers adjust their date, gaining or losing a full day.
+## See also
+- [Time Zone](/wiki/Time_Zone)
+- [Prime Meridian](/wiki/Prime_Meridian)
+- [GMT](/wiki/GMT)
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