Timezones: Difference between revisions
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| Line 3: | Line 3: | ||
; From local to GMT | ; From local to GMT | ||
: To determine how to get back to GMT time from a local time, always add | : To determine how to get back to GMT time from a local time, always add the offsets given below to get GMT time. | ||
; From GMT to local | ; From GMT to local | ||
: To get from GMT time to local time, subtract the value if positive (west of Greenwich) to get local time. | : To get from GMT time to local time, subtract the value of the offset if positive (west of Greenwich) to get local time. | ||
: Add the absolute value if the value is negative (east of Greenwich), or simply subtract the value. | : Add the absolute value if the value is negative (east of Greenwich), or simply subtract the value. | ||
| Line 14: | Line 14: | ||
|+ 1937 timezones. | |+ 1937 timezones. | ||
|- | |- | ||
!Ship/Place | ! Ship/Place | ||
!Time of TZ Change | ! Time of TZ Change | ||
! | ! Offset from GMT | ||
|- | |- | ||
| Howland | | Howland | ||
| Line 74: | Line 74: | ||
| 8 | | 8 | ||
|- | |- | ||
| rowspan="3"| ''Duane'' | |||
| 13 Jan 1937 | | 13 Jan 1937 | ||
| 10.5 | | 10.5 | ||
| Line 84: | Line 84: | ||
| 10.5 | | 10.5 | ||
|- | |- | ||
| ''Shoshone'' | |||
| March 10, 0700 | | March 10, 0700 | ||
| 10.5 <br> | | 10.5 <br> | ||
(stays 10.5 for duration of first attempt) | (stays 10.5 for duration of first attempt) | ||
|- | |- | ||
|rowspan="7"| ''Itasca'' | |||
| 19 June 0000 | | 19 June 0000 | ||
| 10.5 | | 10.5 | ||
| Line 111: | Line 111: | ||
| 10.5 | | 10.5 | ||
|- | |- | ||
|rowspan="7"| ''Ontario'' | |||
| 17 June 1937 | | 17 June 1937 | ||
| 0700 11 | | 0700 11 | ||
| Line 133: | Line 133: | ||
| 11 | | 11 | ||
|- | |- | ||
|rowspan="6"| ''Swan'' | |||
| 1 July 0000 | | 1 July 0000 | ||
| 11 | | 11 | ||
| Line 152: | Line 152: | ||
| -12 | | -12 | ||
|- | |- | ||
|rowspan="4"| ''Colorado'' | |||
| 3 July 1400 | | 3 July 1400 | ||
| 10.5 | | 10.5 | ||
| Line 165: | Line 165: | ||
| 10.5 | | 10.5 | ||
|- | |- | ||
|rowspan="6"| | |||
''Lexington''<br> | ''Lexington''<br> | ||
''Drayton''<br> | ''Drayton''<br> | ||
Revision as of 15:13, 16 December 2011
- From local to GMT
- To determine how to get back to GMT time from a local time, always add the offsets given below to get GMT time.
- From GMT to local
- To get from GMT time to local time, subtract the value of the offset if positive (west of Greenwich) to get local time.
- Add the absolute value if the value is negative (east of Greenwich), or simply subtract the value.
| Ship/Place | Time of TZ Change | Offset from GMT |
|---|---|---|
| Howland | 10.5 | |
| Jarvis | 10.5 | |
| Baker | 11 | |
| Honolulu | 10.5 | |
| San Francisco | 8 | |
| Washington, DC | 5 | |
| London | -1 | |
| American Samoa | 11 | |
| CINCUS | 8 | |
| COMINBATFOR | 10.5 | |
| COMDESCOFOR | 8 | |
| COMAIRBASEFOR | 8 | |
| COMBATSHIPS | 8 | |
| COMAIRBATFOR | 8 | |
| Duane | 13 Jan 1937 | 10.5 |
| 15 Jan 0530 | 11 | |
| 24 Jan 1300 | 10.5 | |
| Shoshone | March 10, 0700 | 10.5 (stays 10.5 for duration of first attempt) |
| Itasca | 19 June 0000 | 10.5 |
| 20 June 1400 | 11 | |
| 22 June 1400 | 11.5 | |
| 12 July 1400 | 12 | |
| 14 July 0000 | 11.5 | |
| 20 July 1400 | 11 | |
| 23 July 0800 | 10.5 | |
| Ontario | 17 June 1937 | 0700 11 |
| 18 June 0000 | 12 | |
| 20 June 1100 | -12 | |
| 22 June 1800 | -11 | |
| 5 July 0800 | -12 | |
| 7 July 1500 | 12 | |
| 9 July 1500 | 11 | |
| Swan | 1 July 0000 | 11 |
| 6 July 1300 | 11.5 | |
| 10 July 0300 | 11 | |
| 10 July 1700 | 11.5 | |
| 12 July 1900 | 12 | |
| 15 July 0000 | -12 | |
| Colorado | 3 July 1400 | 10.5 |
| 4 July 4 1300 | 11 | |
| 7 July 1300 | 11.5 | |
| 14 July 1300 | 10.5 | |
|
Lexington |
1 July 1937 | 8 |
| 5 July 1600 | 9 | |
| 7 July 1600 | 10 | |
| 8 July 1030: | 10.5 | |
| 12 July | 11.5 | |
| 21 July | 10.5 |