Garmin GPS III Plus Owner's Manual - Page 107

Appendix H

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The chart below gives an approximate UTC (Universal Time Coordinate) 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. APPENDIX H Time Offsets Longitudinal Zone W180.0º to W172.5º W172.5º to W157.5º W157.5º to W142.5º W142.5º to W127.5º W127.5º to W112.5º W112.5º to W097.5º W097.5º to W082.5º W082.5º to W067.5º W067.5º to W052.5º W052.5º to W037.5º W037.5º to W022.5º W022.5º to W007.5º W007.5º to E007.5º Offset -12 -11 -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 Longitudinal Zone E007.5º to E022.5º E022.5º to E037.5º E037.5º to E052.5º E052.5º to E067.5º E067.5º to E082.5º E082.5º to E097.5º E097.5º to E112.5º E112.5º to E127.5º E127.5º to E142.5º E142.5º to E157.5º E157.5º to E172.5º E172.5º to E180.0º Offset +1 +2 H +3 A simple way to determine your local +4 time offset is how many hours you are +5 behind or ahead of UTC (also called +6 'Greenwich' or 'zulu' time). Example: EST (Eastern Standard +7 Time) is 5 hours behind UTC, so your +8 offset would be -5. Adding one hour +9 for daylight savings would make EDT +10 (Eastern Daylight Time) - 4. Subtract an hour for each time zone as you +11 travel west. +12 Offsets for Continental U.S. would be: EST -5 EDT -4 CST -6 CDT -5 MST -7 MDT -6 PST -8 PDT -7 97

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97
APPENDIX H
Time Offsets
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
Longitudinal Zone
Offset
E007.5º to E022.5º
+1
E022.5º to E037.5º
+2
E037.5º to E052.5º
+3
E052.5º to E067.5º
+4
E067.5º to E082.5º
+5
E082.5º to E097.5º
+6
E097.5º to E112.5º
+7
E112.5º to E127.5º
+8
E127.5º to E142.5º
+9
E142.5º to E157.5º
+10
E157.5º to E172.5º
+11
E172.5º to E180.0º
+12
A simple way to determine your local
time offset is how many hours you are
behind or ahead of UTC (also called
‘Greenwich’ or ‘zulu’ time).
Example: EST (Eastern Standard
Time) is 5 hours behind UTC, so your
offset would be -5. Adding one hour
for daylight savings would make EDT
(Eastern Daylight Time) - 4. Subtract
an hour for each time zone as you
travel west.
Offsets for Continental U.S. would be:
EST
-5
EDT
-4
CST
-6
CDT
-5
MST
-7
MDT
-6
PST
-8
PDT
-7
The chart below gives an approximate UTC (Universal Time Coordinate) 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.
H