A numeric format for storing latitude and longitude that makes it easier to import coordinates into a GIS and to use for location-based calculations. For example, a comparison of latitude and longitude formats for the location of the Library of Alexandria in Egypt is as follows:
Degrees, minutes, seconds: 31°12'31.93"N, 29°54'33.62"E
Decimal degrees: 31.208870, 29.909339
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