Caliper Mapping and Transportation Glossary


What is longitude?

In geography, longitude is the distance on the earth’s surface, east or west of a defined meridian, usually the meridian of Greenwich, England (0° Longitude), expressed in angular measurements from 180° West (or -180°) to 180° East. Latitude and longitude can be used together to specify a precise location on the Earth.

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What is a Longitude/Longitude definition: Map of longitudes created with Maptitude map software

Longitude is expressed in degrees East or West of the Prime Meridian.