Europe/Ulyanovsk

Time zone identifier: Europe/Ulyanovsk

Current civil offset: +04:00 (+04)

Current DST state: Observing Standard Time

First standard time adoption: Adopted on 1919-07-01

Local Mean Time (LMT): +03:13:36 based on geographic meridian

Total recorded transitions: 66 transitions across 5 distinct offsets

Associated countries: RU

Historical Offset Step Chart (1880 to Present)

Text summary: Europe/Ulyanovsk shifted between 5 distinct offsets from 1919-07-01 through the modern era.

Complete Transition History (66 Transitions)

UTC Instant	Local Wall Time	Shift	Abbreviation	DST	Effect
`1919-07-01T00:00:00Z`	`1919-07-01 03:00:00`	+03:13:36 → +03:00	`+03`	No	overlap
`1930-06-20T21:00:00Z`	`1930-06-21 01:00:00`	+03:00 → +04:00	`+04`	No	gap
`1981-03-31T20:00:00Z`	`1981-04-01 01:00:00`	+04:00 → +05:00	`+05`	Yes	gap
`1981-09-30T19:00:00Z`	`1981-09-30 23:00:00`	+05:00 → +04:00	`+04`	No	overlap
`1982-03-31T20:00:00Z`	`1982-04-01 01:00:00`	+04:00 → +05:00	`+05`	Yes	gap
`1982-09-30T19:00:00Z`	`1982-09-30 23:00:00`	+05:00 → +04:00	`+04`	No	overlap
`1983-03-31T20:00:00Z`	`1983-04-01 01:00:00`	+04:00 → +05:00	`+05`	Yes	gap
`1983-09-30T19:00:00Z`	`1983-09-30 23:00:00`	+05:00 → +04:00	`+04`	No	overlap
`1984-03-31T20:00:00Z`	`1984-04-01 01:00:00`	+04:00 → +05:00	`+05`	Yes	gap
`1984-09-29T22:00:00Z`	`1984-09-30 02:00:00`	+05:00 → +04:00	`+04`	No	overlap
`1985-03-30T22:00:00Z`	`1985-03-31 03:00:00`	+04:00 → +05:00	`+05`	Yes	gap
`1985-09-28T22:00:00Z`	`1985-09-29 02:00:00`	+05:00 → +04:00	`+04`	No	overlap
`1986-03-29T22:00:00Z`	`1986-03-30 03:00:00`	+04:00 → +05:00	`+05`	Yes	gap
`1986-09-27T22:00:00Z`	`1986-09-28 02:00:00`	+05:00 → +04:00	`+04`	No	overlap
`1987-03-28T22:00:00Z`	`1987-03-29 03:00:00`	+04:00 → +05:00	`+05`	Yes	gap
`1987-09-26T22:00:00Z`	`1987-09-27 02:00:00`	+05:00 → +04:00	`+04`	No	overlap
`1988-03-26T22:00:00Z`	`1988-03-27 03:00:00`	+04:00 → +05:00	`+05`	Yes	gap
`1988-09-24T22:00:00Z`	`1988-09-25 02:00:00`	+05:00 → +04:00	`+04`	No	overlap
`1989-03-25T22:00:00Z`	`1989-03-26 02:00:00`	+04:00 → +04:00	`+04`	Yes	offset-only
`1989-09-23T23:00:00Z`	`1989-09-24 02:00:00`	+04:00 → +03:00	`+03`	No	overlap
`1990-03-24T23:00:00Z`	`1990-03-25 03:00:00`	+03:00 → +04:00	`+04`	Yes	gap
`1990-09-29T23:00:00Z`	`1990-09-30 02:00:00`	+04:00 → +03:00	`+03`	No	overlap
`1991-03-30T23:00:00Z`	`1991-03-31 02:00:00`	+03:00 → +03:00	`+03`	Yes	offset-only
`1991-09-29T00:00:00Z`	`1991-09-29 02:00:00`	+03:00 → +02:00	`+02`	No	overlap
`1992-01-19T00:00:00Z`	`1992-01-19 03:00:00`	+02:00 → +03:00	`+03`	No	gap
`1992-03-28T23:00:00Z`	`1992-03-29 03:00:00`	+03:00 → +04:00	`+04`	Yes	gap
`1992-09-26T23:00:00Z`	`1992-09-27 02:00:00`	+04:00 → +03:00	`+03`	No	overlap
`1993-03-27T23:00:00Z`	`1993-03-28 03:00:00`	+03:00 → +04:00	`+04`	Yes	gap
`1993-09-25T23:00:00Z`	`1993-09-26 02:00:00`	+04:00 → +03:00	`+03`	No	overlap
`1994-03-26T23:00:00Z`	`1994-03-27 03:00:00`	+03:00 → +04:00	`+04`	Yes	gap
`1994-09-24T23:00:00Z`	`1994-09-25 02:00:00`	+04:00 → +03:00	`+03`	No	overlap
`1995-03-25T23:00:00Z`	`1995-03-26 03:00:00`	+03:00 → +04:00	`+04`	Yes	gap
`1995-09-23T23:00:00Z`	`1995-09-24 02:00:00`	+04:00 → +03:00	`+03`	No	overlap
`1996-03-30T23:00:00Z`	`1996-03-31 03:00:00`	+03:00 → +04:00	`+04`	Yes	gap
`1996-10-26T23:00:00Z`	`1996-10-27 02:00:00`	+04:00 → +03:00	`+03`	No	overlap
`1997-03-29T23:00:00Z`	`1997-03-30 03:00:00`	+03:00 → +04:00	`+04`	Yes	gap
`1997-10-25T23:00:00Z`	`1997-10-26 02:00:00`	+04:00 → +03:00	`+03`	No	overlap
`1998-03-28T23:00:00Z`	`1998-03-29 03:00:00`	+03:00 → +04:00	`+04`	Yes	gap
`1998-10-24T23:00:00Z`	`1998-10-25 02:00:00`	+04:00 → +03:00	`+03`	No	overlap
`1999-03-27T23:00:00Z`	`1999-03-28 03:00:00`	+03:00 → +04:00	`+04`	Yes	gap
`1999-10-30T23:00:00Z`	`1999-10-31 02:00:00`	+04:00 → +03:00	`+03`	No	overlap
`2000-03-25T23:00:00Z`	`2000-03-26 03:00:00`	+03:00 → +04:00	`+04`	Yes	gap
`2000-10-28T23:00:00Z`	`2000-10-29 02:00:00`	+04:00 → +03:00	`+03`	No	overlap
`2001-03-24T23:00:00Z`	`2001-03-25 03:00:00`	+03:00 → +04:00	`+04`	Yes	gap
`2001-10-27T23:00:00Z`	`2001-10-28 02:00:00`	+04:00 → +03:00	`+03`	No	overlap
`2002-03-30T23:00:00Z`	`2002-03-31 03:00:00`	+03:00 → +04:00	`+04`	Yes	gap
`2002-10-26T23:00:00Z`	`2002-10-27 02:00:00`	+04:00 → +03:00	`+03`	No	overlap
`2003-03-29T23:00:00Z`	`2003-03-30 03:00:00`	+03:00 → +04:00	`+04`	Yes	gap
`2003-10-25T23:00:00Z`	`2003-10-26 02:00:00`	+04:00 → +03:00	`+03`	No	overlap
`2004-03-27T23:00:00Z`	`2004-03-28 03:00:00`	+03:00 → +04:00	`+04`	Yes	gap
`2004-10-30T23:00:00Z`	`2004-10-31 02:00:00`	+04:00 → +03:00	`+03`	No	overlap
`2005-03-26T23:00:00Z`	`2005-03-27 03:00:00`	+03:00 → +04:00	`+04`	Yes	gap
`2005-10-29T23:00:00Z`	`2005-10-30 02:00:00`	+04:00 → +03:00	`+03`	No	overlap
`2006-03-25T23:00:00Z`	`2006-03-26 03:00:00`	+03:00 → +04:00	`+04`	Yes	gap
`2006-10-28T23:00:00Z`	`2006-10-29 02:00:00`	+04:00 → +03:00	`+03`	No	overlap
`2007-03-24T23:00:00Z`	`2007-03-25 03:00:00`	+03:00 → +04:00	`+04`	Yes	gap
`2007-10-27T23:00:00Z`	`2007-10-28 02:00:00`	+04:00 → +03:00	`+03`	No	overlap
`2008-03-29T23:00:00Z`	`2008-03-30 03:00:00`	+03:00 → +04:00	`+04`	Yes	gap
`2008-10-25T23:00:00Z`	`2008-10-26 02:00:00`	+04:00 → +03:00	`+03`	No	overlap
`2009-03-28T23:00:00Z`	`2009-03-29 03:00:00`	+03:00 → +04:00	`+04`	Yes	gap
`2009-10-24T23:00:00Z`	`2009-10-25 02:00:00`	+04:00 → +03:00	`+03`	No	overlap
`2010-03-27T23:00:00Z`	`2010-03-28 03:00:00`	+03:00 → +04:00	`+04`	Yes	gap
`2010-10-30T23:00:00Z`	`2010-10-31 02:00:00`	+04:00 → +03:00	`+03`	No	overlap
`2011-03-26T23:00:00Z`	`2011-03-27 03:00:00`	+03:00 → +04:00	`+04`	No	gap
`2014-10-25T22:00:00Z`	`2014-10-26 01:00:00`	+04:00 → +03:00	`+03`	No	overlap
`2016-03-26T23:00:00Z`	`2016-03-27 03:00:00`	+03:00 → +04:00	`+04`	No	gap

Notes from the Maintainers

Source: europe (Lines 3040 to 3053)

From Paul Eggert (2016-03-18):
Europe/Ulyanovsk covers:
73	RU-ULY	Ulyanovsk Oblast

The 1989 transition is from USSR act No. 227 (1989-03-14).

From Alexander Krivenyshev (2016-02-17):
Ulyanovsk ... on their way to change time zones by March 27, 2016 at 2am.
Ulyanovsk Oblast ... from MSK to MSK+1 (UTC+3 to UTC+4) ...
920582-6 ... 02/17/2016 The State Duma passed the bill in the first reading.
From Matt Johnson (2016-03-09):
http://publication.pravo.gov.ru/Document/View/0001201603090051

Attributed Statements:

Paul Eggert (2016-03-18):

Europe/Ulyanovsk covers: 73 RU-ULY Ulyanovsk Oblast The 1989 transition is from USSR act No. 227 (1989-03-14).

Alexander Krivenyshev (2016-02-17):

Ulyanovsk ... on their way to change time zones by March 27, 2016 at 2am. Ulyanovsk Oblast ... from MSK to MSK+1 (UTC+3 to UTC+4) ... 920582-6 ... 02/17/2016 The State Duma passed the bill in the first reading.

Matt Johnson (2016-03-09):

http://publication.pravo.gov.ru/Document/View/0001201603090051

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.