Earth locations use lines {longitude}| {meridian} running from pole to pole. Longitude is in degrees, up to 180 degrees east or west from the prime meridian that runs through Greenwich, England.
At meridian 180 degrees east or west {International Date Line}|, time adds one day if traveling east, and time subtracts one day if traveling west.
The reference meridian {prime meridian}| runs through Greenwich, England, at zero degrees longitude.
5-Earth Science-Planet-Earth Coordinates
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Date Modified: 2022.0225