Asia/Ust-Nera

Time zone identifier: Asia/Ust-Nera

Current civil offset: +10:00 (+10)

Current DST state: Observing Standard Time

First standard time adoption: Adopted on 1919-12-14

Local Mean Time (LMT): +09:32:54 based on geographic meridian

Total recorded transitions: 66 transitions across 6 distinct offsets

Associated countries: RU

Historical Offset Step Chart (1880 to Present)

Text summary: Asia/Ust-Nera shifted between 6 distinct offsets from 1919-12-14 through the modern era.

Complete Transition History (66 Transitions)

UTC Instant	Local Wall Time	Shift	Abbreviation	DST	Effect
`1919-12-14T14:27:06Z`	`1919-12-14 22:27:06`	+09:32:54 → +08:00	`+08`	No	overlap
`1930-06-20T16:00:00Z`	`1930-06-21 01:00:00`	+08:00 → +09:00	`+09`	No	gap
`1981-03-31T15:00:00Z`	`1981-04-01 03:00:00`	+09:00 → +12:00	`+12`	Yes	gap
`1981-09-30T12:00:00Z`	`1981-09-30 23:00:00`	+12:00 → +11:00	`+11`	No	overlap
`1982-03-31T13:00:00Z`	`1982-04-01 01:00:00`	+11:00 → +12:00	`+12`	Yes	gap
`1982-09-30T12:00:00Z`	`1982-09-30 23:00:00`	+12:00 → +11:00	`+11`	No	overlap
`1983-03-31T13:00:00Z`	`1983-04-01 01:00:00`	+11:00 → +12:00	`+12`	Yes	gap
`1983-09-30T12:00:00Z`	`1983-09-30 23:00:00`	+12:00 → +11:00	`+11`	No	overlap
`1984-03-31T13:00:00Z`	`1984-04-01 01:00:00`	+11:00 → +12:00	`+12`	Yes	gap
`1984-09-29T15:00:00Z`	`1984-09-30 02:00:00`	+12:00 → +11:00	`+11`	No	overlap
`1985-03-30T15:00:00Z`	`1985-03-31 03:00:00`	+11:00 → +12:00	`+12`	Yes	gap
`1985-09-28T15:00:00Z`	`1985-09-29 02:00:00`	+12:00 → +11:00	`+11`	No	overlap
`1986-03-29T15:00:00Z`	`1986-03-30 03:00:00`	+11:00 → +12:00	`+12`	Yes	gap
`1986-09-27T15:00:00Z`	`1986-09-28 02:00:00`	+12:00 → +11:00	`+11`	No	overlap
`1987-03-28T15:00:00Z`	`1987-03-29 03:00:00`	+11:00 → +12:00	`+12`	Yes	gap
`1987-09-26T15:00:00Z`	`1987-09-27 02:00:00`	+12:00 → +11:00	`+11`	No	overlap
`1988-03-26T15:00:00Z`	`1988-03-27 03:00:00`	+11:00 → +12:00	`+12`	Yes	gap
`1988-09-24T15:00:00Z`	`1988-09-25 02:00:00`	+12:00 → +11:00	`+11`	No	overlap
`1989-03-25T15:00:00Z`	`1989-03-26 03:00:00`	+11:00 → +12:00	`+12`	Yes	gap
`1989-09-23T15:00:00Z`	`1989-09-24 02:00:00`	+12:00 → +11:00	`+11`	No	overlap
`1990-03-24T15:00:00Z`	`1990-03-25 03:00:00`	+11:00 → +12:00	`+12`	Yes	gap
`1990-09-29T15:00:00Z`	`1990-09-30 02:00:00`	+12:00 → +11:00	`+11`	No	overlap
`1991-03-30T15:00:00Z`	`1991-03-31 02:00:00`	+11:00 → +11:00	`+11`	Yes	offset-only
`1991-09-28T16:00:00Z`	`1991-09-29 02:00:00`	+11:00 → +10:00	`+10`	No	overlap
`1992-01-18T16:00:00Z`	`1992-01-19 03:00:00`	+10:00 → +11:00	`+11`	No	gap
`1992-03-28T15:00:00Z`	`1992-03-29 03:00:00`	+11:00 → +12:00	`+12`	Yes	gap
`1992-09-26T15:00:00Z`	`1992-09-27 02:00:00`	+12:00 → +11:00	`+11`	No	overlap
`1993-03-27T15:00:00Z`	`1993-03-28 03:00:00`	+11:00 → +12:00	`+12`	Yes	gap
`1993-09-25T15:00:00Z`	`1993-09-26 02:00:00`	+12:00 → +11:00	`+11`	No	overlap
`1994-03-26T15:00:00Z`	`1994-03-27 03:00:00`	+11:00 → +12:00	`+12`	Yes	gap
`1994-09-24T15:00:00Z`	`1994-09-25 02:00:00`	+12:00 → +11:00	`+11`	No	overlap
`1995-03-25T15:00:00Z`	`1995-03-26 03:00:00`	+11:00 → +12:00	`+12`	Yes	gap
`1995-09-23T15:00:00Z`	`1995-09-24 02:00:00`	+12:00 → +11:00	`+11`	No	overlap
`1996-03-30T15:00:00Z`	`1996-03-31 03:00:00`	+11:00 → +12:00	`+12`	Yes	gap
`1996-10-26T15:00:00Z`	`1996-10-27 02:00:00`	+12:00 → +11:00	`+11`	No	overlap
`1997-03-29T15:00:00Z`	`1997-03-30 03:00:00`	+11:00 → +12:00	`+12`	Yes	gap
`1997-10-25T15:00:00Z`	`1997-10-26 02:00:00`	+12:00 → +11:00	`+11`	No	overlap
`1998-03-28T15:00:00Z`	`1998-03-29 03:00:00`	+11:00 → +12:00	`+12`	Yes	gap
`1998-10-24T15:00:00Z`	`1998-10-25 02:00:00`	+12:00 → +11:00	`+11`	No	overlap
`1999-03-27T15:00:00Z`	`1999-03-28 03:00:00`	+11:00 → +12:00	`+12`	Yes	gap
`1999-10-30T15:00:00Z`	`1999-10-31 02:00:00`	+12:00 → +11:00	`+11`	No	overlap
`2000-03-25T15:00:00Z`	`2000-03-26 03:00:00`	+11:00 → +12:00	`+12`	Yes	gap
`2000-10-28T15:00:00Z`	`2000-10-29 02:00:00`	+12:00 → +11:00	`+11`	No	overlap
`2001-03-24T15:00:00Z`	`2001-03-25 03:00:00`	+11:00 → +12:00	`+12`	Yes	gap
`2001-10-27T15:00:00Z`	`2001-10-28 02:00:00`	+12:00 → +11:00	`+11`	No	overlap
`2002-03-30T15:00:00Z`	`2002-03-31 03:00:00`	+11:00 → +12:00	`+12`	Yes	gap
`2002-10-26T15:00:00Z`	`2002-10-27 02:00:00`	+12:00 → +11:00	`+11`	No	overlap
`2003-03-29T15:00:00Z`	`2003-03-30 03:00:00`	+11:00 → +12:00	`+12`	Yes	gap
`2003-10-25T15:00:00Z`	`2003-10-26 02:00:00`	+12:00 → +11:00	`+11`	No	overlap
`2004-03-27T15:00:00Z`	`2004-03-28 03:00:00`	+11:00 → +12:00	`+12`	Yes	gap
`2004-10-30T15:00:00Z`	`2004-10-31 02:00:00`	+12:00 → +11:00	`+11`	No	overlap
`2005-03-26T15:00:00Z`	`2005-03-27 03:00:00`	+11:00 → +12:00	`+12`	Yes	gap
`2005-10-29T15:00:00Z`	`2005-10-30 02:00:00`	+12:00 → +11:00	`+11`	No	overlap
`2006-03-25T15:00:00Z`	`2006-03-26 03:00:00`	+11:00 → +12:00	`+12`	Yes	gap
`2006-10-28T15:00:00Z`	`2006-10-29 02:00:00`	+12:00 → +11:00	`+11`	No	overlap
`2007-03-24T15:00:00Z`	`2007-03-25 03:00:00`	+11:00 → +12:00	`+12`	Yes	gap
`2007-10-27T15:00:00Z`	`2007-10-28 02:00:00`	+12:00 → +11:00	`+11`	No	overlap
`2008-03-29T15:00:00Z`	`2008-03-30 03:00:00`	+11:00 → +12:00	`+12`	Yes	gap
`2008-10-25T15:00:00Z`	`2008-10-26 02:00:00`	+12:00 → +11:00	`+11`	No	overlap
`2009-03-28T15:00:00Z`	`2009-03-29 03:00:00`	+11:00 → +12:00	`+12`	Yes	gap
`2009-10-24T15:00:00Z`	`2009-10-25 02:00:00`	+12:00 → +11:00	`+11`	No	overlap
`2010-03-27T15:00:00Z`	`2010-03-28 03:00:00`	+11:00 → +12:00	`+12`	Yes	gap
`2010-10-30T15:00:00Z`	`2010-10-31 02:00:00`	+12:00 → +11:00	`+11`	No	overlap
`2011-03-26T15:00:00Z`	`2011-03-27 03:00:00`	+11:00 → +12:00	`+12`	No	gap
`2011-09-12T12:00:00Z`	`2011-09-12 23:00:00`	+12:00 → +11:00	`+11`	No	overlap
`2014-10-25T15:00:00Z`	`2014-10-26 01:00:00`	+11:00 → +10:00	`+10`	No	overlap

Notes from the Maintainers

Source: europe (Lines 3516 to 3531)

From Tim Parenti (2014-07-03):
Asia/Ust-Nera covers parts of (14, RU-SA) Sakha (Yakutia) Republic:
14-22	****	Oymyakonsky District

From Arthur David Olson (2022-03-21):
Oymyakonsky and the Kuril Islands switched from
Magadan time to Vladivostok time in 2011.

From Tim Parenti (2014-07-06), per Alexander Krivenyshev (2014-07-02):
It's unlikely that any of the Kuril Islands were involved in such a switch,
as the South and Middle Kurils have been on UTC+11 (SAKT) with the rest of
Sakhalin Oblast since at least 2011-09, and the North Kurils have been on
UTC+12 since at least then, too.

Attributed Statements:

Tim Parenti (2014-07-03):

Asia/Ust-Nera covers parts of (14, RU-SA) Sakha (Yakutia) Republic: 14-22 **** Oymyakonsky District

Arthur David Olson (2022-03-21):

Oymyakonsky and the Kuril Islands switched from Magadan time to Vladivostok time in 2011.

Tim Parenti (2014-07-06):

It's unlikely that any of the Kuril Islands were involved in such a switch, as the South and Middle Kurils have been on UTC+11 (SAKT) with the rest of Sakhalin Oblast since at least 2011-09, and the North Kurils have been on UTC+12 since at least then, too.

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.