Europe/Istanbul

Time zone identifier: Europe/Istanbul

Current civil offset: +03:00 (+03)

Current DST state: Observing Standard Time

First standard time adoption: Adopted on 1879-12-31

Local Mean Time (LMT): +01:55:52 based on geographic meridian

Total recorded transitions: 115 transitions across 5 distinct offsets

Associated countries: TR

Aliases (Link targets): Asia/Istanbul, Turkey

Historical Offset Step Chart (1880 to Present)

Text summary: Europe/Istanbul shifted between 5 distinct offsets from 1879-12-31 through the modern era.

Complete Transition History (115 Transitions)

UTC Instant	Local Wall Time	Shift	Abbreviation	DST	Effect
`1879-12-31T22:04:08Z`	`1880-01-01 00:01:04`	+01:55:52 → +01:56:56	`IMT`	No	gap
`1910-09-30T22:03:04Z`	`1910-10-01 00:03:04`	+01:56:56 → +02:00	`EET`	No	gap
`1916-04-30T22:00:00Z`	`1916-05-01 01:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`1916-09-30T21:00:00Z`	`1916-09-30 23:00:00`	+03:00 → +02:00	`EET`	No	overlap
`1920-03-27T22:00:00Z`	`1920-03-28 01:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`1920-10-24T21:00:00Z`	`1920-10-24 23:00:00`	+03:00 → +02:00	`EET`	No	overlap
`1921-04-02T22:00:00Z`	`1921-04-03 01:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`1921-10-02T21:00:00Z`	`1921-10-02 23:00:00`	+03:00 → +02:00	`EET`	No	overlap
`1922-03-25T22:00:00Z`	`1922-03-26 01:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`1922-10-07T21:00:00Z`	`1922-10-07 23:00:00`	+03:00 → +02:00	`EET`	No	overlap
`1924-05-12T22:00:00Z`	`1924-05-13 01:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`1924-09-30T21:00:00Z`	`1924-09-30 23:00:00`	+03:00 → +02:00	`EET`	No	overlap
`1925-04-30T22:00:00Z`	`1925-05-01 01:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`1925-09-30T21:00:00Z`	`1925-09-30 23:00:00`	+03:00 → +02:00	`EET`	No	overlap
`1940-06-30T22:00:00Z`	`1940-07-01 01:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`1940-10-05T21:00:00Z`	`1940-10-05 23:00:00`	+03:00 → +02:00	`EET`	No	overlap
`1940-11-30T22:00:00Z`	`1940-12-01 01:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`1941-09-20T21:00:00Z`	`1941-09-20 23:00:00`	+03:00 → +02:00	`EET`	No	overlap
`1942-03-31T22:00:00Z`	`1942-04-01 01:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`1945-10-07T21:00:00Z`	`1945-10-07 23:00:00`	+03:00 → +02:00	`EET`	No	overlap
`1946-05-31T22:00:00Z`	`1946-06-01 01:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`1946-09-30T21:00:00Z`	`1946-09-30 23:00:00`	+03:00 → +02:00	`EET`	No	overlap
`1947-04-19T22:00:00Z`	`1947-04-20 01:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`1947-10-04T21:00:00Z`	`1947-10-04 23:00:00`	+03:00 → +02:00	`EET`	No	overlap
`1948-04-17T22:00:00Z`	`1948-04-18 01:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`1948-10-02T21:00:00Z`	`1948-10-02 23:00:00`	+03:00 → +02:00	`EET`	No	overlap
`1949-04-09T22:00:00Z`	`1949-04-10 01:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`1949-10-01T21:00:00Z`	`1949-10-01 23:00:00`	+03:00 → +02:00	`EET`	No	overlap
`1950-04-15T22:00:00Z`	`1950-04-16 01:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`1950-10-07T21:00:00Z`	`1950-10-07 23:00:00`	+03:00 → +02:00	`EET`	No	overlap
`1951-04-21T22:00:00Z`	`1951-04-22 01:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`1951-10-06T21:00:00Z`	`1951-10-06 23:00:00`	+03:00 → +02:00	`EET`	No	overlap
`1962-07-14T22:00:00Z`	`1962-07-15 01:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`1963-10-29T21:00:00Z`	`1963-10-29 23:00:00`	+03:00 → +02:00	`EET`	No	overlap
`1964-05-14T22:00:00Z`	`1964-05-15 01:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`1964-09-30T21:00:00Z`	`1964-09-30 23:00:00`	+03:00 → +02:00	`EET`	No	overlap
`1973-06-02T23:00:00Z`	`1973-06-03 02:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`1973-11-03T23:00:00Z`	`1973-11-04 01:00:00`	+03:00 → +02:00	`EET`	No	overlap
`1974-03-31T00:00:00Z`	`1974-03-31 03:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`1974-11-02T23:00:00Z`	`1974-11-03 01:00:00`	+03:00 → +02:00	`EET`	No	overlap
`1975-03-22T00:00:00Z`	`1975-03-22 03:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`1975-11-01T23:00:00Z`	`1975-11-02 01:00:00`	+03:00 → +02:00	`EET`	No	overlap
`1976-03-21T00:00:00Z`	`1976-03-21 03:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`1976-10-30T23:00:00Z`	`1976-10-31 01:00:00`	+03:00 → +02:00	`EET`	No	overlap
`1977-04-03T00:00:00Z`	`1977-04-03 03:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`1977-10-15T23:00:00Z`	`1977-10-16 01:00:00`	+03:00 → +02:00	`EET`	No	overlap
`1978-04-02T00:00:00Z`	`1978-04-02 03:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`1978-06-28T21:00:00Z`	`1978-06-29 00:00:00`	+03:00 → +03:00	`+03`	No	offset-only
`1983-07-30T23:00:00Z`	`1983-07-31 03:00:00`	+03:00 → +04:00	`+04`	Yes	gap
`1983-10-01T22:00:00Z`	`1983-10-02 01:00:00`	+04:00 → +03:00	`+03`	No	overlap
`1984-10-31T23:00:00Z`	`1984-11-01 01:00:00`	+03:00 → +02:00	`EET`	No	overlap
`1985-04-19T23:00:00Z`	`1985-04-20 02:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`1985-09-27T23:00:00Z`	`1985-09-28 01:00:00`	+03:00 → +02:00	`EET`	No	overlap
`1986-03-29T23:00:00Z`	`1986-03-30 02:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`1986-09-27T23:00:00Z`	`1986-09-28 01:00:00`	+03:00 → +02:00	`EET`	No	overlap
`1987-03-28T23:00:00Z`	`1987-03-29 02:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`1987-09-26T23:00:00Z`	`1987-09-27 01:00:00`	+03:00 → +02:00	`EET`	No	overlap
`1988-03-26T23:00:00Z`	`1988-03-27 02:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`1988-09-24T23:00:00Z`	`1988-09-25 01:00:00`	+03:00 → +02:00	`EET`	No	overlap
`1989-03-25T23:00:00Z`	`1989-03-26 02:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`1989-09-23T23:00:00Z`	`1989-09-24 01:00:00`	+03:00 → +02:00	`EET`	No	overlap
`1990-03-24T23:00:00Z`	`1990-03-25 02:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`1990-09-29T23:00:00Z`	`1990-09-30 01:00:00`	+03:00 → +02:00	`EET`	No	overlap
`1991-03-30T23:00:00Z`	`1991-03-31 02:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`1991-09-28T23:00:00Z`	`1991-09-29 01:00:00`	+03:00 → +02:00	`EET`	No	overlap
`1992-03-28T23:00:00Z`	`1992-03-29 02:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`1992-09-26T23:00:00Z`	`1992-09-27 01:00:00`	+03:00 → +02:00	`EET`	No	overlap
`1993-03-27T23:00:00Z`	`1993-03-28 02:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`1993-09-25T23:00:00Z`	`1993-09-26 01:00:00`	+03:00 → +02:00	`EET`	No	overlap
`1994-03-19T23:00:00Z`	`1994-03-20 02:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`1994-09-24T23:00:00Z`	`1994-09-25 01:00:00`	+03:00 → +02:00	`EET`	No	overlap
`1995-03-25T23:00:00Z`	`1995-03-26 02:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`1995-09-23T23:00:00Z`	`1995-09-24 01:00:00`	+03:00 → +02:00	`EET`	No	overlap
`1996-03-30T23:00:00Z`	`1996-03-31 02:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`1996-10-26T23:00:00Z`	`1996-10-27 01:00:00`	+03:00 → +02:00	`EET`	No	overlap
`1997-03-29T23:00:00Z`	`1997-03-30 02:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`1997-10-25T23:00:00Z`	`1997-10-26 01:00:00`	+03:00 → +02:00	`EET`	No	overlap
`1998-03-28T23:00:00Z`	`1998-03-29 02:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`1998-10-24T23:00:00Z`	`1998-10-25 01:00:00`	+03:00 → +02:00	`EET`	No	overlap
`1999-03-27T23:00:00Z`	`1999-03-28 02:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`1999-10-30T23:00:00Z`	`1999-10-31 01:00:00`	+03:00 → +02:00	`EET`	No	overlap
`2000-03-25T23:00:00Z`	`2000-03-26 02:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`2000-10-28T23:00:00Z`	`2000-10-29 01:00:00`	+03:00 → +02:00	`EET`	No	overlap
`2001-03-24T23:00:00Z`	`2001-03-25 02:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`2001-10-27T23:00:00Z`	`2001-10-28 01:00:00`	+03:00 → +02:00	`EET`	No	overlap
`2002-03-30T23:00:00Z`	`2002-03-31 02:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`2002-10-26T23:00:00Z`	`2002-10-27 01:00:00`	+03:00 → +02:00	`EET`	No	overlap
`2003-03-29T23:00:00Z`	`2003-03-30 02:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`2003-10-25T23:00:00Z`	`2003-10-26 01:00:00`	+03:00 → +02:00	`EET`	No	overlap
`2004-03-27T23:00:00Z`	`2004-03-28 02:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`2004-10-30T23:00:00Z`	`2004-10-31 01:00:00`	+03:00 → +02:00	`EET`	No	overlap
`2005-03-26T23:00:00Z`	`2005-03-27 02:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`2005-10-29T23:00:00Z`	`2005-10-30 01:00:00`	+03:00 → +02:00	`EET`	No	overlap
`2006-03-25T23:00:00Z`	`2006-03-26 02:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`2006-10-28T23:00:00Z`	`2006-10-29 01:00:00`	+03:00 → +02:00	`EET`	No	overlap
`2007-03-25T01:00:00Z`	`2007-03-25 04:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`2007-10-28T01:00:00Z`	`2007-10-28 03:00:00`	+03:00 → +02:00	`EET`	No	overlap
`2008-03-30T01:00:00Z`	`2008-03-30 04:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`2008-10-26T01:00:00Z`	`2008-10-26 03:00:00`	+03:00 → +02:00	`EET`	No	overlap
`2009-03-29T01:00:00Z`	`2009-03-29 04:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`2009-10-25T01:00:00Z`	`2009-10-25 03:00:00`	+03:00 → +02:00	`EET`	No	overlap
`2010-03-28T01:00:00Z`	`2010-03-28 04:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`2010-10-31T01:00:00Z`	`2010-10-31 03:00:00`	+03:00 → +02:00	`EET`	No	overlap
`2011-03-28T01:00:00Z`	`2011-03-28 04:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`2011-10-30T01:00:00Z`	`2011-10-30 03:00:00`	+03:00 → +02:00	`EET`	No	overlap
`2012-03-25T01:00:00Z`	`2012-03-25 04:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`2012-10-28T01:00:00Z`	`2012-10-28 03:00:00`	+03:00 → +02:00	`EET`	No	overlap
`2013-03-31T01:00:00Z`	`2013-03-31 04:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`2013-10-27T01:00:00Z`	`2013-10-27 03:00:00`	+03:00 → +02:00	`EET`	No	overlap
`2014-03-31T01:00:00Z`	`2014-03-31 04:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`2014-10-26T01:00:00Z`	`2014-10-26 03:00:00`	+03:00 → +02:00	`EET`	No	overlap
`2015-03-29T01:00:00Z`	`2015-03-29 04:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`2015-11-08T01:00:00Z`	`2015-11-08 03:00:00`	+03:00 → +02:00	`EET`	No	overlap
`2016-03-27T01:00:00Z`	`2016-03-27 04:00:00`	+02:00 → +03:00	`EEST`	Yes	gap
`2016-09-06T21:00:00Z`	`2016-09-07 00:00:00`	+03:00 → +03:00	`+03`	No	offset-only

Notes from the Maintainers

Source: europe (Lines 4006 to 4006)

Zone	NAME		STDOFF	RULES	FORMAT	[UNTIL]

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.