Zone NAME STDOFF RULES FORMAT [UNTIL]
Asia/Dhaka
Time zone identifier: Asia/Dhaka
Current civil offset: +06:00 (+06)
Current DST state: Observing Standard Time
First standard time adoption: Adopted on 1889-12-31
Local Mean Time (LMT): +06:01:40 based on geographic meridian
Total recorded transitions: 7 transitions across 6 distinct offsets
Associated countries: BD
Aliases (Link targets): Asia/Dacca
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Historical Offset Step Chart (1880 to Present)
Text summary: Asia/Dhaka shifted between 6 distinct offsets from 1889-12-31 through the modern era.
Complete Transition History (7 Transitions)
| UTC Instant | Local Wall Time | Shift | Abbreviation | DST | Effect |
|---|---|---|---|---|---|
1889-12-31T17:58:20Z | 1889-12-31 23:51:40 | +06:01:40 → +05:53:20 | HMT | No | overlap |
1941-09-30T18:06:40Z | 1941-10-01 00:36:40 | +05:53:20 → +06:30 | +0630 | No | gap |
1942-05-14T17:30:00Z | 1942-05-14 23:00:00 | +06:30 → +05:30 | +0530 | No | overlap |
1942-08-31T18:30:00Z | 1942-09-01 01:00:00 | +05:30 → +06:30 | +0630 | No | gap |
1951-09-29T17:30:00Z | 1951-09-29 23:30:00 | +06:30 → +06:00 | +06 | No | overlap |
2009-06-19T17:00:00Z | 2009-06-20 00:00:00 | +06:00 → +07:00 | +07 | Yes | gap |
2009-12-31T17:00:00Z | 2009-12-31 23:00:00 | +07:00 → +06:00 | +06 | No | overlap |
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.
asia(Lines 227 to 228)