Garmin GPS 100 User Manual download pdf (Page 109)

APPENDIX C

LOCAL TIME TO UTC TIME CONVERSION

To find UTC time from your local time, add the adjustment for your longitude

zone given below. (If you are in a daylight savings time zone, subtract one

hour from the adjustment.) For example, if you are at longitude W081°00.00'

and your local time is 11:00 standard time, add 5 hours to obtain UTC time

which is 16:00.

Longitude Zone Adjust

W180.0° to W172.5° +12

W172.5° to W157.5° +11

W157.5° to W142.5° +10

W142.5° to W127.5° + 9

W127.5° to W112.5° + 8

W112.5° to W097.5° + 7

W097.5° to W082.5° + 6

W082.5° to W067.5° + 5

W067.5° to W052.5 + 4

W052.5° to W037.5° + 3

W037.5° to W022.5° + 2

W022.5° to W007.5° + 1

W007.5° to E007.5° 0

E007.5° to E022.5° - 1

E022.5° to E037.5° - 2

E037.5° to E052.5° - 3

E052.5° to E067.5° - 4

E067.5° to E082.5° - 5

E082.5° to E097.5° - 6

E097.5° to E112.5° - 7

E112.5° to E127.5° - 8

E127.5° to E142.5° - 9

E142.5° to E157.5° -10

E157.5° to E172.5° -11

E172.5° to E180.0° -12

NOTE: The time zone boundaries given above may be different depending

on your area. Consult your charts for more accurate information concerning

time zones.

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Garmin GPS 100 User Manual Page 109