East/West Longitude
Longitude is the location east and west of the Greenwich prime meridian in London, measured in degrees from this reference point, which is 0. Europe is plus degrees to the east, and the Americas are minus degrees to the west.
To pinpoint a location on earth, the north/south latitude (y-axis) is combined with the east/west longitude (x-axis). For example, the Empire State Building in New York is expressed in degrees, minutes and seconds as follows:
![]() | Reproduced with permission from Computer Desktop Encyclopedia. Copyright (c) 1981-2009 The Computer Language Company Inc. All rights reserved. |
Additional Resources
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