Measured in degrees north and south of the equator; parallel circles whose lines run east and west.

latitude

The center horizontal line of latitude around the Earth; divides Earth into the Northern and Southern Hemispheres.

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equator

Measured in degrees east and west of the prime meridian; circles that intersect at the north and south pole.

longitude

0 degrees longitude; runs through Greenwich, England; divides Earth into Eastern and Western Hemispheres.

prime meridian

180 degrees longitude; continuation of Prime Meridian; marks a change in day.​

international date line

The latitude and longitude of a location.

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coordinates