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Appendix B
Time Offset
Chart
The table below gives approximate UTC time offset for various longitudinal zones.
If you are in a time zone with daylight savings, add one hour to the offset.
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
Longitudinal Zone Offset
W180.0° to W172.5° -12.00
W172.5° to W157.5° -11.00
W157.5° to W142.5° -10.00
W142.5° to W127.5° -09.00
W127.5° to W112.5° -08.00
W112.5° to W097.5° -07.00
W097.5° to W082.5° -06.00
W082.5° to W067.5° -05.00
W067.5° to W052.5° -04.00
W052.5° to W037.5° -03.00
W037.5° to W022.5° -02.00
W022.5° to W007.5° -01.00
W007.5° to E007.5° -00.00
Longitudinal Zone Offset
E007.5° to E022.5° +01.00
E022.5° to E037.5° +02.00
E052.5° to E067.5° +03.00
E067.5° to E082.5° +04.00
E082.5° to E097.5° +05.00
E097.5° to E112.5° +06.00
E112.5° to E122.5° +07.00
E122.5° to E127.5° +08.00
E127.5° to E142.5° +09.00
E142.5° to E157.5° +10.00
E157.5° to E172.5° +11.00
E172.5° to E180.5° +12.00
Appendices