Asia/Omsk

Time zone identifier: Asia/Omsk

Current civil offset: +06:00 (+06)

Current DST state: Observing Standard Time

First standard time adoption: Adopted on 1919-11-13

Local Mean Time (LMT): +04:53:30 based on geographic meridian

Total recorded transitions: 65 transitions across 4 distinct offsets

Associated countries: RU

Historical Offset Step Chart (1880 to Present)

Text summary: Asia/Omsk shifted between 4 distinct offsets from 1919-11-13 through the modern era.

Complete Transition History (65 Transitions)

UTC Instant	Local Wall Time	Shift	Abbreviation	DST	Effect
`1919-11-13T19:06:30Z`	`1919-11-14 00:06:30`	+04:53:30 → +05:00	`+05`	No	gap
`1930-06-20T19:00:00Z`	`1930-06-21 01:00:00`	+05:00 → +06:00	`+06`	No	gap
`1981-03-31T18:00:00Z`	`1981-04-01 01:00:00`	+06:00 → +07:00	`+07`	Yes	gap
`1981-09-30T17:00:00Z`	`1981-09-30 23:00:00`	+07:00 → +06:00	`+06`	No	overlap
`1982-03-31T18:00:00Z`	`1982-04-01 01:00:00`	+06:00 → +07:00	`+07`	Yes	gap
`1982-09-30T17:00:00Z`	`1982-09-30 23:00:00`	+07:00 → +06:00	`+06`	No	overlap
`1983-03-31T18:00:00Z`	`1983-04-01 01:00:00`	+06:00 → +07:00	`+07`	Yes	gap
`1983-09-30T17:00:00Z`	`1983-09-30 23:00:00`	+07:00 → +06:00	`+06`	No	overlap
`1984-03-31T18:00:00Z`	`1984-04-01 01:00:00`	+06:00 → +07:00	`+07`	Yes	gap
`1984-09-29T20:00:00Z`	`1984-09-30 02:00:00`	+07:00 → +06:00	`+06`	No	overlap
`1985-03-30T20:00:00Z`	`1985-03-31 03:00:00`	+06:00 → +07:00	`+07`	Yes	gap
`1985-09-28T20:00:00Z`	`1985-09-29 02:00:00`	+07:00 → +06:00	`+06`	No	overlap
`1986-03-29T20:00:00Z`	`1986-03-30 03:00:00`	+06:00 → +07:00	`+07`	Yes	gap
`1986-09-27T20:00:00Z`	`1986-09-28 02:00:00`	+07:00 → +06:00	`+06`	No	overlap
`1987-03-28T20:00:00Z`	`1987-03-29 03:00:00`	+06:00 → +07:00	`+07`	Yes	gap
`1987-09-26T20:00:00Z`	`1987-09-27 02:00:00`	+07:00 → +06:00	`+06`	No	overlap
`1988-03-26T20:00:00Z`	`1988-03-27 03:00:00`	+06:00 → +07:00	`+07`	Yes	gap
`1988-09-24T20:00:00Z`	`1988-09-25 02:00:00`	+07:00 → +06:00	`+06`	No	overlap
`1989-03-25T20:00:00Z`	`1989-03-26 03:00:00`	+06:00 → +07:00	`+07`	Yes	gap
`1989-09-23T20:00:00Z`	`1989-09-24 02:00:00`	+07:00 → +06:00	`+06`	No	overlap
`1990-03-24T20:00:00Z`	`1990-03-25 03:00:00`	+06:00 → +07:00	`+07`	Yes	gap
`1990-09-29T20:00:00Z`	`1990-09-30 02:00:00`	+07:00 → +06:00	`+06`	No	overlap
`1991-03-30T20:00:00Z`	`1991-03-31 02:00:00`	+06:00 → +06:00	`+06`	Yes	offset-only
`1991-09-28T21:00:00Z`	`1991-09-29 02:00:00`	+06:00 → +05:00	`+05`	No	overlap
`1992-01-18T21:00:00Z`	`1992-01-19 03:00:00`	+05:00 → +06:00	`+06`	No	gap
`1992-03-28T20:00:00Z`	`1992-03-29 03:00:00`	+06:00 → +07:00	`+07`	Yes	gap
`1992-09-26T20:00:00Z`	`1992-09-27 02:00:00`	+07:00 → +06:00	`+06`	No	overlap
`1993-03-27T20:00:00Z`	`1993-03-28 03:00:00`	+06:00 → +07:00	`+07`	Yes	gap
`1993-09-25T20:00:00Z`	`1993-09-26 02:00:00`	+07:00 → +06:00	`+06`	No	overlap
`1994-03-26T20:00:00Z`	`1994-03-27 03:00:00`	+06:00 → +07:00	`+07`	Yes	gap
`1994-09-24T20:00:00Z`	`1994-09-25 02:00:00`	+07:00 → +06:00	`+06`	No	overlap
`1995-03-25T20:00:00Z`	`1995-03-26 03:00:00`	+06:00 → +07:00	`+07`	Yes	gap
`1995-09-23T20:00:00Z`	`1995-09-24 02:00:00`	+07:00 → +06:00	`+06`	No	overlap
`1996-03-30T20:00:00Z`	`1996-03-31 03:00:00`	+06:00 → +07:00	`+07`	Yes	gap
`1996-10-26T20:00:00Z`	`1996-10-27 02:00:00`	+07:00 → +06:00	`+06`	No	overlap
`1997-03-29T20:00:00Z`	`1997-03-30 03:00:00`	+06:00 → +07:00	`+07`	Yes	gap
`1997-10-25T20:00:00Z`	`1997-10-26 02:00:00`	+07:00 → +06:00	`+06`	No	overlap
`1998-03-28T20:00:00Z`	`1998-03-29 03:00:00`	+06:00 → +07:00	`+07`	Yes	gap
`1998-10-24T20:00:00Z`	`1998-10-25 02:00:00`	+07:00 → +06:00	`+06`	No	overlap
`1999-03-27T20:00:00Z`	`1999-03-28 03:00:00`	+06:00 → +07:00	`+07`	Yes	gap
`1999-10-30T20:00:00Z`	`1999-10-31 02:00:00`	+07:00 → +06:00	`+06`	No	overlap
`2000-03-25T20:00:00Z`	`2000-03-26 03:00:00`	+06:00 → +07:00	`+07`	Yes	gap
`2000-10-28T20:00:00Z`	`2000-10-29 02:00:00`	+07:00 → +06:00	`+06`	No	overlap
`2001-03-24T20:00:00Z`	`2001-03-25 03:00:00`	+06:00 → +07:00	`+07`	Yes	gap
`2001-10-27T20:00:00Z`	`2001-10-28 02:00:00`	+07:00 → +06:00	`+06`	No	overlap
`2002-03-30T20:00:00Z`	`2002-03-31 03:00:00`	+06:00 → +07:00	`+07`	Yes	gap
`2002-10-26T20:00:00Z`	`2002-10-27 02:00:00`	+07:00 → +06:00	`+06`	No	overlap
`2003-03-29T20:00:00Z`	`2003-03-30 03:00:00`	+06:00 → +07:00	`+07`	Yes	gap
`2003-10-25T20:00:00Z`	`2003-10-26 02:00:00`	+07:00 → +06:00	`+06`	No	overlap
`2004-03-27T20:00:00Z`	`2004-03-28 03:00:00`	+06:00 → +07:00	`+07`	Yes	gap
`2004-10-30T20:00:00Z`	`2004-10-31 02:00:00`	+07:00 → +06:00	`+06`	No	overlap
`2005-03-26T20:00:00Z`	`2005-03-27 03:00:00`	+06:00 → +07:00	`+07`	Yes	gap
`2005-10-29T20:00:00Z`	`2005-10-30 02:00:00`	+07:00 → +06:00	`+06`	No	overlap
`2006-03-25T20:00:00Z`	`2006-03-26 03:00:00`	+06:00 → +07:00	`+07`	Yes	gap
`2006-10-28T20:00:00Z`	`2006-10-29 02:00:00`	+07:00 → +06:00	`+06`	No	overlap
`2007-03-24T20:00:00Z`	`2007-03-25 03:00:00`	+06:00 → +07:00	`+07`	Yes	gap
`2007-10-27T20:00:00Z`	`2007-10-28 02:00:00`	+07:00 → +06:00	`+06`	No	overlap
`2008-03-29T20:00:00Z`	`2008-03-30 03:00:00`	+06:00 → +07:00	`+07`	Yes	gap
`2008-10-25T20:00:00Z`	`2008-10-26 02:00:00`	+07:00 → +06:00	`+06`	No	overlap
`2009-03-28T20:00:00Z`	`2009-03-29 03:00:00`	+06:00 → +07:00	`+07`	Yes	gap
`2009-10-24T20:00:00Z`	`2009-10-25 02:00:00`	+07:00 → +06:00	`+06`	No	overlap
`2010-03-27T20:00:00Z`	`2010-03-28 03:00:00`	+06:00 → +07:00	`+07`	Yes	gap
`2010-10-30T20:00:00Z`	`2010-10-31 02:00:00`	+07:00 → +06:00	`+06`	No	overlap
`2011-03-26T20:00:00Z`	`2011-03-27 03:00:00`	+06:00 → +07:00	`+07`	No	gap
`2014-10-25T19:00:00Z`	`2014-10-26 01:00:00`	+07:00 → +06:00	`+06`	No	overlap

Notes from the Maintainers

Source: europe (Lines 3093 to 3100)

From Tim Parenti (2014-07-03), per Oscar van Vlijmen (2001-08-25):
Asia/Omsk covers...
55	RU-OMS	Omsk Oblast

Byalokoz 1919 says Omsk was 4:53:30.

Attributed Statements:

Tim Parenti (2014-07-03):

Asia/Omsk covers... 55 RU-OMS Omsk Oblast Byalokoz 1919 says Omsk was 4:53:30.

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.