How to enter negative longitude values?

By convention, meridians to the west of the Prime Meridian in Greenwich (England) can be expressed as negative values. Similarly, locations south of the equator could be assigned negative latitude values.

Our apps provide buttons for designating the four directions: N, S, E, W.

If you are provided with a negative longitude value, please enter it as a positive value then tap on the “W” button to indicate the proper direction.

You may setup the angle system to let you enter latitudes and longitudes in degrees, minutes and seconds or as decimal degrees.


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