Asia/Aqtau

Time zone identifier: Asia/Aqtau

Current civil offset: +05:00 (+05)

Current DST state: Observing Standard Time

First standard time adoption: Adopted on 1924-05-01

Local Mean Time (LMT): +03:21:04 based on geographic meridian

Total recorded transitions: 50 transitions across 4 distinct offsets

Associated countries: KZ

Historical Offset Step Chart (1880 to Present)

Text summary: Asia/Aqtau shifted between 4 distinct offsets from 1924-05-01 through the modern era.

Complete Transition History (50 Transitions)

UTC Instant	Local Wall Time	Shift	Abbreviation	DST	Effect
`1924-05-01T20:38:56Z`	`1924-05-02 00:38:56`	+03:21:04 → +04:00	`+04`	No	gap
`1930-06-20T20:00:00Z`	`1930-06-21 01:00:00`	+04:00 → +05:00	`+05`	No	gap
`1981-09-30T19:00:00Z`	`1981-10-01 01:00:00`	+05:00 → +06:00	`+06`	No	gap
`1982-03-31T18:00:00Z`	`1982-04-01 00:00:00`	+06:00 → +06:00	`+06`	Yes	offset-only
`1982-09-30T18:00:00Z`	`1982-09-30 23:00:00`	+06:00 → +05:00	`+05`	No	overlap
`1983-03-31T19:00:00Z`	`1983-04-01 01:00:00`	+05:00 → +06:00	`+06`	Yes	gap
`1983-09-30T18:00:00Z`	`1983-09-30 23:00:00`	+06:00 → +05:00	`+05`	No	overlap
`1984-03-31T19:00:00Z`	`1984-04-01 01:00:00`	+05:00 → +06:00	`+06`	Yes	gap
`1984-09-29T21:00:00Z`	`1984-09-30 02:00:00`	+06:00 → +05:00	`+05`	No	overlap
`1985-03-30T21:00:00Z`	`1985-03-31 03:00:00`	+05:00 → +06:00	`+06`	Yes	gap
`1985-09-28T21:00:00Z`	`1985-09-29 02:00:00`	+06:00 → +05:00	`+05`	No	overlap
`1986-03-29T21:00:00Z`	`1986-03-30 03:00:00`	+05:00 → +06:00	`+06`	Yes	gap
`1986-09-27T21:00:00Z`	`1986-09-28 02:00:00`	+06:00 → +05:00	`+05`	No	overlap
`1987-03-28T21:00:00Z`	`1987-03-29 03:00:00`	+05:00 → +06:00	`+06`	Yes	gap
`1987-09-26T21:00:00Z`	`1987-09-27 02:00:00`	+06:00 → +05:00	`+05`	No	overlap
`1988-03-26T21:00:00Z`	`1988-03-27 03:00:00`	+05:00 → +06:00	`+06`	Yes	gap
`1988-09-24T21:00:00Z`	`1988-09-25 02:00:00`	+06:00 → +05:00	`+05`	No	overlap
`1989-03-25T21:00:00Z`	`1989-03-26 03:00:00`	+05:00 → +06:00	`+06`	Yes	gap
`1989-09-23T21:00:00Z`	`1989-09-24 02:00:00`	+06:00 → +05:00	`+05`	No	overlap
`1990-03-24T21:00:00Z`	`1990-03-25 03:00:00`	+05:00 → +06:00	`+06`	Yes	gap
`1990-09-29T21:00:00Z`	`1990-09-30 02:00:00`	+06:00 → +05:00	`+05`	No	overlap
`1991-03-30T21:00:00Z`	`1991-03-31 02:00:00`	+05:00 → +05:00	`+05`	Yes	offset-only
`1991-09-28T22:00:00Z`	`1991-09-29 02:00:00`	+05:00 → +04:00	`+04`	No	overlap
`1992-01-18T22:00:00Z`	`1992-01-19 03:00:00`	+04:00 → +05:00	`+05`	No	gap
`1992-03-28T21:00:00Z`	`1992-03-29 03:00:00`	+05:00 → +06:00	`+06`	Yes	gap
`1992-09-26T21:00:00Z`	`1992-09-27 02:00:00`	+06:00 → +05:00	`+05`	No	overlap
`1993-03-27T21:00:00Z`	`1993-03-28 03:00:00`	+05:00 → +06:00	`+06`	Yes	gap
`1993-09-25T21:00:00Z`	`1993-09-26 02:00:00`	+06:00 → +05:00	`+05`	No	overlap
`1994-03-26T21:00:00Z`	`1994-03-27 03:00:00`	+05:00 → +06:00	`+06`	Yes	gap
`1994-09-24T21:00:00Z`	`1994-09-25 01:00:00`	+06:00 → +04:00	`+04`	No	overlap
`1995-03-25T22:00:00Z`	`1995-03-26 03:00:00`	+04:00 → +05:00	`+05`	Yes	gap
`1995-09-23T22:00:00Z`	`1995-09-24 02:00:00`	+05:00 → +04:00	`+04`	No	overlap
`1996-03-30T22:00:00Z`	`1996-03-31 03:00:00`	+04:00 → +05:00	`+05`	Yes	gap
`1996-10-26T22:00:00Z`	`1996-10-27 02:00:00`	+05:00 → +04:00	`+04`	No	overlap
`1997-03-29T22:00:00Z`	`1997-03-30 03:00:00`	+04:00 → +05:00	`+05`	Yes	gap
`1997-10-25T22:00:00Z`	`1997-10-26 02:00:00`	+05:00 → +04:00	`+04`	No	overlap
`1998-03-28T22:00:00Z`	`1998-03-29 03:00:00`	+04:00 → +05:00	`+05`	Yes	gap
`1998-10-24T22:00:00Z`	`1998-10-25 02:00:00`	+05:00 → +04:00	`+04`	No	overlap
`1999-03-27T22:00:00Z`	`1999-03-28 03:00:00`	+04:00 → +05:00	`+05`	Yes	gap
`1999-10-30T22:00:00Z`	`1999-10-31 02:00:00`	+05:00 → +04:00	`+04`	No	overlap
`2000-03-25T22:00:00Z`	`2000-03-26 03:00:00`	+04:00 → +05:00	`+05`	Yes	gap
`2000-10-28T22:00:00Z`	`2000-10-29 02:00:00`	+05:00 → +04:00	`+04`	No	overlap
`2001-03-24T22:00:00Z`	`2001-03-25 03:00:00`	+04:00 → +05:00	`+05`	Yes	gap
`2001-10-27T22:00:00Z`	`2001-10-28 02:00:00`	+05:00 → +04:00	`+04`	No	overlap
`2002-03-30T22:00:00Z`	`2002-03-31 03:00:00`	+04:00 → +05:00	`+05`	Yes	gap
`2002-10-26T22:00:00Z`	`2002-10-27 02:00:00`	+05:00 → +04:00	`+04`	No	overlap
`2003-03-29T22:00:00Z`	`2003-03-30 03:00:00`	+04:00 → +05:00	`+05`	Yes	gap
`2003-10-25T22:00:00Z`	`2003-10-26 02:00:00`	+05:00 → +04:00	`+04`	No	overlap
`2004-03-27T22:00:00Z`	`2004-03-28 03:00:00`	+04:00 → +05:00	`+05`	Yes	gap
`2004-10-30T22:00:00Z`	`2004-10-31 03:00:00`	+05:00 → +05:00	`+05`	No	offset-only

Notes from the Maintainers

Source: asia (Lines 2551 to 2553)

Mangghystaū (KZ-47)
Aqtau was not founded until 1963, but it represents an inhabited region,
so include timestamps before 1963.

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.