Benin Whitman says they switched to 1:00 in 1946, not 1934; go with Shanks & Pottenger.
Africa/Porto-Novo
Time zone identifier: Africa/Porto-Novo
Current civil offset: +01:00 (WAT)
Current DST state: Observing Standard Time
First standard time adoption: Adopted on 1911-12-31
Local Mean Time (LMT): +00:10:28 based on geographic meridian
Total recorded transitions: 2 transitions across 3 distinct offsets
Associated countries: BJ
Advertisement Space
Historical Offset Step Chart (1880 to Present)
Text summary: Africa/Porto-Novo shifted between 3 distinct offsets from 1911-12-31 through the modern era.
Complete Transition History (2 Transitions)
| UTC Instant | Local Wall Time | Shift | Abbreviation | DST | Effect |
|---|---|---|---|---|---|
1911-12-31T23:49:32Z | 1911-12-31 23:49:32 | +00:10:28 → +00:00 | GMT | No | overlap |
1934-02-26T00:00:00Z | 1934-02-26 01:00:00 | +00:00 → +01:00 | WAT | No | gap |
Notes from the Maintainers
Years on Record
Methodology Note: The 1970 Rule
tzdb guarantees accuracy for timestamps from 1970 onwards. Transitions prior to 1970 represent best-effort historical reconstructions.
backzone(Lines 414 to 417)