Garmin GPS III Plus User Manual download pdf (Page 107)

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.

1 2 ... 102 103 104 105 106 107 108 109 110 111 112 113 114

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Garmin GPS III Plus User Manual Page 107

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