Magellan CrossoverGPS 980890-05 - Manual (Page 65)

Magellan CrossoverGPS POI Manager 49
Magellan CrossoverGPS POI Manager
The Magellan CrossoverGPS POI Manager enables you to transfer custom points of
interest files from your computer to your Magellan CrossoverGPS.
Before adding any custom POIs to the Magellan CrossoverGPS, you should understand
how the POI Manager plots POIs.
Latitude
Latitude can be expressed by dividing Earth into
horizontal segments totalling 180 degrees.
Starting at the Equator, or zero degrees Latitude,
lines (or Parallels) are drawn in 10-degree
increments 90 degrees to the north and
90 degrees to the south. If your location is below
the Equator, you are at a South Latitude.
Longitude
Conversely, longitude lines can be expressed by
dividing Earth into vertical segments totalling
360 degrees. Starting at the Prime Meridian
(which is The Royal Observatory in Greenwich,
England), or zero degrees Longitude, lines are
drawn in 10-degree increments 180 degrees to
the West and 180 degrees to the East. If your
location is on the western hemisphere, you are at
a West Longitude.
Additionally, to narrow down your location
further, each 10-degree segment is divided into 60 smaller segments called minutes and,
further still, each minute is divided into 60 segments called seconds.
To express this in coordinates, the city of Paris is located at 48° (degrees) 51’ (minutes)
and 00 (seconds) North of the Equator, and 2° (degrees) 20’ (minutes) and 00 (seconds)
East of the Prime Meridian.
North Latitude
South Latitude
0°
10°
20°
30°
40°
50°
60°
70°
80°
90° (North Pole)
0°
10°
20°
30°
40°
50°
60°
70°
80°
90° (South Pole)
Equator
90°
West Longitude
East Longitude
70° 50° 30° 10° 10° 30° 50° 70° 90°
80° 60° 40° 20° 0° 20° 40° 60° 80°