Garmin GPSMAP 175 - Manual (Page 87)

APPENDIX
Definitions & Time Offsets
E
The chart below gives an approximate UTC time offset for the various
longitudinal zones. Check with local charts for more detailed information. If you
are in daylight savings time, add one hour to the offset.
Longitudinal Zone Offset
W180.0º to W172.5º -12
W172.5º to W157.5º -11
W157.5º to W142.5º -10
W142.5º to W127.5º -9
W127.5º to W112.5º -8
W112.5º to W097.5º -7
W097.5º to W082.5º -6
W082.5º to W067.5º -5
W067.5º to W052.5º -4
W052.5º to W037.5º -3
W037.5º to W022.5º -2
W022.5º to W007.5º -1
W007.5º to E007.5º 0
E007.5º to E022.5º 1
E022.5º to E037.5º 2
E037.5º to E052.5º 3
E052.5º to E067.5º 4
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Turn (TRN)— The difference and direction in degrees between the bearing to your
destination and your course over ground. The TRN value is used to indicate what
direction, and how many degrees, to turn to get back on course.
Universal Time Coordinated (UTC)— The time of day at the prime meridian (0º
longitude) in Greenwich, England.
Universal Transverse Mercator- (UTM)— A grid coordinate system that projects
global sections onto a flat surface to measure position in specific zones.
Velocity Made Good (VMG)—The speed you are traveling in the direction of the
destination.
Waypoint—A specific location saved in the receiver’s memory.
175 Manual 7/31/98 3:58 PM Page 83