The International Date Line and time
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I can use time and date maps and the International Date Line to explore time zones around the world.
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West of the Prime Meridian, you ‘lose’ four minutes for every degree of longitude, and east you ‘gain’ four minutes.
The International Date Line is 180˚ east and 180˚ west of the Prime Meridian and is the place where the date changes.
Meridians are the basis for the 24 time zones; many deviate from the meridian to accommodate national/state borders.
The Antimeridian forms the basis of the International Date Line, with some deviations for national borders.
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This content is by Cashar and published under an open licence.