Asia/Tomsk

Time zone identifier: Asia/Tomsk

Current civil offset: +07:00 (+07)

Current DST state: Observing Standard Time

First standard time adoption: Adopted on 1919-12-21

Local Mean Time (LMT): +05:39:51 based on geographic meridian

Total recorded transitions: 67 transitions across 4 distinct offsets

Associated countries: RU

Historical Offset Step Chart (1880 to Present)

Text summary: Asia/Tomsk shifted between 4 distinct offsets from 1919-12-21 through the modern era.

Complete Transition History (67 Transitions)

UTC Instant	Local Wall Time	Shift	Abbreviation	DST	Effect
`1919-12-21T18:20:09Z`	`1919-12-22 00:20:09`	+05:39:51 → +06:00	`+06`	No	gap
`1930-06-20T18:00:00Z`	`1930-06-21 01:00:00`	+06:00 → +07:00	`+07`	No	gap
`1981-03-31T17:00:00Z`	`1981-04-01 01:00:00`	+07:00 → +08:00	`+08`	Yes	gap
`1981-09-30T16:00:00Z`	`1981-09-30 23:00:00`	+08:00 → +07:00	`+07`	No	overlap
`1982-03-31T17:00:00Z`	`1982-04-01 01:00:00`	+07:00 → +08:00	`+08`	Yes	gap
`1982-09-30T16:00:00Z`	`1982-09-30 23:00:00`	+08:00 → +07:00	`+07`	No	overlap
`1983-03-31T17:00:00Z`	`1983-04-01 01:00:00`	+07:00 → +08:00	`+08`	Yes	gap
`1983-09-30T16:00:00Z`	`1983-09-30 23:00:00`	+08:00 → +07:00	`+07`	No	overlap
`1984-03-31T17:00:00Z`	`1984-04-01 01:00:00`	+07:00 → +08:00	`+08`	Yes	gap
`1984-09-29T19:00:00Z`	`1984-09-30 02:00:00`	+08:00 → +07:00	`+07`	No	overlap
`1985-03-30T19:00:00Z`	`1985-03-31 03:00:00`	+07:00 → +08:00	`+08`	Yes	gap
`1985-09-28T19:00:00Z`	`1985-09-29 02:00:00`	+08:00 → +07:00	`+07`	No	overlap
`1986-03-29T19:00:00Z`	`1986-03-30 03:00:00`	+07:00 → +08:00	`+08`	Yes	gap
`1986-09-27T19:00:00Z`	`1986-09-28 02:00:00`	+08:00 → +07:00	`+07`	No	overlap
`1987-03-28T19:00:00Z`	`1987-03-29 03:00:00`	+07:00 → +08:00	`+08`	Yes	gap
`1987-09-26T19:00:00Z`	`1987-09-27 02:00:00`	+08:00 → +07:00	`+07`	No	overlap
`1988-03-26T19:00:00Z`	`1988-03-27 03:00:00`	+07:00 → +08:00	`+08`	Yes	gap
`1988-09-24T19:00:00Z`	`1988-09-25 02:00:00`	+08:00 → +07:00	`+07`	No	overlap
`1989-03-25T19:00:00Z`	`1989-03-26 03:00:00`	+07:00 → +08:00	`+08`	Yes	gap
`1989-09-23T19:00:00Z`	`1989-09-24 02:00:00`	+08:00 → +07:00	`+07`	No	overlap
`1990-03-24T19:00:00Z`	`1990-03-25 03:00:00`	+07:00 → +08:00	`+08`	Yes	gap
`1990-09-29T19:00:00Z`	`1990-09-30 02:00:00`	+08:00 → +07:00	`+07`	No	overlap
`1991-03-30T19:00:00Z`	`1991-03-31 02:00:00`	+07:00 → +07:00	`+07`	Yes	offset-only
`1991-09-28T20:00:00Z`	`1991-09-29 02:00:00`	+07:00 → +06:00	`+06`	No	overlap
`1992-01-18T20:00:00Z`	`1992-01-19 03:00:00`	+06:00 → +07:00	`+07`	No	gap
`1992-03-28T19:00:00Z`	`1992-03-29 03:00:00`	+07:00 → +08:00	`+08`	Yes	gap
`1992-09-26T19:00:00Z`	`1992-09-27 02:00:00`	+08:00 → +07:00	`+07`	No	overlap
`1993-03-27T19:00:00Z`	`1993-03-28 03:00:00`	+07:00 → +08:00	`+08`	Yes	gap
`1993-09-25T19:00:00Z`	`1993-09-26 02:00:00`	+08:00 → +07:00	`+07`	No	overlap
`1994-03-26T19:00:00Z`	`1994-03-27 03:00:00`	+07:00 → +08:00	`+08`	Yes	gap
`1994-09-24T19:00:00Z`	`1994-09-25 02:00:00`	+08:00 → +07:00	`+07`	No	overlap
`1995-03-25T19:00:00Z`	`1995-03-26 03:00:00`	+07:00 → +08:00	`+08`	Yes	gap
`1995-09-23T19:00:00Z`	`1995-09-24 02:00:00`	+08:00 → +07:00	`+07`	No	overlap
`1996-03-30T19:00:00Z`	`1996-03-31 03:00:00`	+07:00 → +08:00	`+08`	Yes	gap
`1996-10-26T19:00:00Z`	`1996-10-27 02:00:00`	+08:00 → +07:00	`+07`	No	overlap
`1997-03-29T19:00:00Z`	`1997-03-30 03:00:00`	+07:00 → +08:00	`+08`	Yes	gap
`1997-10-25T19:00:00Z`	`1997-10-26 02:00:00`	+08:00 → +07:00	`+07`	No	overlap
`1998-03-28T19:00:00Z`	`1998-03-29 03:00:00`	+07:00 → +08:00	`+08`	Yes	gap
`1998-10-24T19:00:00Z`	`1998-10-25 02:00:00`	+08:00 → +07:00	`+07`	No	overlap
`1999-03-27T19:00:00Z`	`1999-03-28 03:00:00`	+07:00 → +08:00	`+08`	Yes	gap
`1999-10-30T19:00:00Z`	`1999-10-31 02:00:00`	+08:00 → +07:00	`+07`	No	overlap
`2000-03-25T19:00:00Z`	`2000-03-26 03:00:00`	+07:00 → +08:00	`+08`	Yes	gap
`2000-10-28T19:00:00Z`	`2000-10-29 02:00:00`	+08:00 → +07:00	`+07`	No	overlap
`2001-03-24T19:00:00Z`	`2001-03-25 03:00:00`	+07:00 → +08:00	`+08`	Yes	gap
`2001-10-27T19:00:00Z`	`2001-10-28 02:00:00`	+08:00 → +07:00	`+07`	No	overlap
`2002-03-30T19:00:00Z`	`2002-03-31 03:00:00`	+07:00 → +08:00	`+08`	Yes	gap
`2002-04-30T19:00:00Z`	`2002-05-01 02:00:00`	+08:00 → +07:00	`+07`	Yes	overlap
`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
`2016-05-28T20:00:00Z`	`2016-05-29 03:00:00`	+06:00 → +07:00	`+07`	No	gap

Notes from the Maintainers

Source: europe (Lines 3169 to 3211)

From Paul Eggert (2016-03-18):
Asia/Tomsk covers:
70	RU-TOM	Tomsk Oblast

From Stepan Golosunov (2016-03-24):
Byalokoz listed Tomsk at 5:39:51.

From Stanislaw A. Kuzikowski (1994-06-29):
Tomsk is still 4 hours ahead of Moscow.

From Stepan Golosunov (2016-03-19):
http://pravo.gov.ru/proxy/ips/?docbody=&nd=102075743
(fifth time belt being UTC+5+1(decree time)
/ UTC+5+1(decree time)+1(summer time)) ...
Note that time belts (numbered from 2 (Moscow) to 12 according to their
GMT/UTC offset and having too many exceptions like regions formally
belonging to one belt but using time from another) were replaced
with time zones in 2011 with different numbering (there was a
2-hour gap between second and third zones in 2011-2014).

From Stepan Golosunov (2016-04-12):
http://asozd2.duma.gov.ru/main.nsf/(SpravkaNew)?OpenAgent&RN=1006865-6
This bill was approved in the first reading today.  It moves Tomsk oblast
from UTC+6 to UTC+7 and is supposed to come into effect on 2016-05-29 at
2:00.  The bill needs to be approved in the second and the third readings by
the State Duma, approved by the Federation Council, signed by the President
and published to become a law.  Minor changes in the text are to be expected
before the second reading (references need to be updated to account for the
recent changes).

Judging by the ultra-short one-day amendments period, recent similar laws,
the State Duma schedule and the Federation Council schedule
http://www.duma.gov.ru/legislative/planning/day-shedule/por_vesna_2016/
http://council.gov.ru/activity/meetings/schedule/63303
I speculate that the final text of the bill will be proposed tomorrow, the
bill will be approved in the second and the third readings on Friday,
approved by the Federation Council on 2016-04-20, signed by the President and
published as a law around 2016-04-26.

From Matt Johnson (2016-04-26):
http://publication.pravo.gov.ru/Document/View/0001201604260048

Attributed Statements:

Paul Eggert (2016-03-18):

Asia/Tomsk covers: 70 RU-TOM Tomsk Oblast

Stepan Golosunov (2016-03-24):

Byalokoz listed Tomsk at 5:39:51.

Stanislaw A. Kuzikowski (1994-06-29):

Tomsk is still 4 hours ahead of Moscow.

Stepan Golosunov (2016-03-19):

http://pravo.gov.ru/proxy/ips/?docbody=&nd=102075743 (fifth time belt being UTC+5+1(decree time) / UTC+5+1(decree time)+1(summer time)) ... Note that time belts (numbered from 2 (Moscow) to 12 according to their GMT/UTC offset and having too many exceptions like regions formally belonging to one belt but using time from another) were replaced with time zones in 2011 with different numbering (there was a 2-hour gap between second and third zones in 2011-2014).

Stepan Golosunov (2016-04-12):

http://asozd2.duma.gov.ru/main.nsf/(SpravkaNew)?OpenAgent&RN=1006865-6 This bill was approved in the first reading today. It moves Tomsk oblast from UTC+6 to UTC+7 and is supposed to come into effect on 2016-05-29 at 2:00. The bill needs to be approved in the second and the third readings by the State Duma, approved by the Federation Council, signed by the President and published to become a law. Minor changes in the text are to be expected before the second reading (references need to be updated to account for the recent changes). Judging by the ultra-short one-day amendments period, recent similar laws, the State Duma schedule and the Federation Council schedule http://www.duma.gov.ru/legislative/planning/day-shedule/por_vesna_2016/ http://council.gov.ru/activity/meetings/schedule/63303 I speculate that the final text of the bill will be proposed tomorrow, the bill will be approved in the second and the third readings on Friday, approved by the Federation Council on 2016-04-20, signed by the President and published as a law around 2016-04-26.

Matt Johnson (2016-04-26):

http://publication.pravo.gov.ru/Document/View/0001201604260048

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.