America/North_Dakota/Beulah

Time zone identifier: America/North_Dakota/Beulah

Current civil offset: -06:00 (CST)

Current DST state: Observing Standard Time

First standard time adoption: Adopted on 1883-11-18

Local Mean Time (LMT): -06:47:07 based on geographic meridian

Total recorded transitions: 150 transitions across 4 distinct offsets

Associated countries: US

Historical Offset Step Chart (1880 to Present)

Text summary: America/North_Dakota/Beulah shifted between 4 distinct offsets from 1883-11-18 through the modern era.

Complete Transition History (150 Transitions)

UTC Instant	Local Wall Time	Shift	Abbreviation	DST	Effect
`1883-11-18T19:00:00Z`	`1883-11-18 12:00:00`	-06:47:07 → -07:00	`MST`	No	overlap
`1918-03-31T09:00:00Z`	`1918-03-31 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1918-10-27T08:00:00Z`	`1918-10-27 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1919-03-30T09:00:00Z`	`1919-03-30 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1919-10-26T08:00:00Z`	`1919-10-26 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1942-02-09T09:00:00Z`	`1942-02-09 03:00:00`	-07:00 → -06:00	`MWT`	Yes	gap
`1945-08-14T23:00:00Z`	`1945-08-14 17:00:00`	-06:00 → -06:00	`MPT`	Yes	offset-only
`1945-09-30T08:00:00Z`	`1945-09-30 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1967-04-30T09:00:00Z`	`1967-04-30 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1967-10-29T08:00:00Z`	`1967-10-29 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1968-04-28T09:00:00Z`	`1968-04-28 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1968-10-27T08:00:00Z`	`1968-10-27 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1969-04-27T09:00:00Z`	`1969-04-27 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1969-10-26T08:00:00Z`	`1969-10-26 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1970-04-26T09:00:00Z`	`1970-04-26 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1970-10-25T08:00:00Z`	`1970-10-25 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1971-04-25T09:00:00Z`	`1971-04-25 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1971-10-31T08:00:00Z`	`1971-10-31 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1972-04-30T09:00:00Z`	`1972-04-30 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1972-10-29T08:00:00Z`	`1972-10-29 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1973-04-29T09:00:00Z`	`1973-04-29 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1973-10-28T08:00:00Z`	`1973-10-28 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1974-01-06T09:00:00Z`	`1974-01-06 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1974-10-27T08:00:00Z`	`1974-10-27 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1975-02-23T09:00:00Z`	`1975-02-23 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1975-10-26T08:00:00Z`	`1975-10-26 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1976-04-25T09:00:00Z`	`1976-04-25 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1976-10-31T08:00:00Z`	`1976-10-31 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1977-04-24T09:00:00Z`	`1977-04-24 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1977-10-30T08:00:00Z`	`1977-10-30 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1978-04-30T09:00:00Z`	`1978-04-30 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1978-10-29T08:00:00Z`	`1978-10-29 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1979-04-29T09:00:00Z`	`1979-04-29 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1979-10-28T08:00:00Z`	`1979-10-28 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1980-04-27T09:00:00Z`	`1980-04-27 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1980-10-26T08:00:00Z`	`1980-10-26 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1981-04-26T09:00:00Z`	`1981-04-26 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1981-10-25T08:00:00Z`	`1981-10-25 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1982-04-25T09:00:00Z`	`1982-04-25 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1982-10-31T08:00:00Z`	`1982-10-31 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1983-04-24T09:00:00Z`	`1983-04-24 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1983-10-30T08:00:00Z`	`1983-10-30 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1984-04-29T09:00:00Z`	`1984-04-29 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1984-10-28T08:00:00Z`	`1984-10-28 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1985-04-28T09:00:00Z`	`1985-04-28 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1985-10-27T08:00:00Z`	`1985-10-27 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1986-04-27T09:00:00Z`	`1986-04-27 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1986-10-26T08:00:00Z`	`1986-10-26 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1987-04-05T09:00:00Z`	`1987-04-05 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1987-10-25T08:00:00Z`	`1987-10-25 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1988-04-03T09:00:00Z`	`1988-04-03 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1988-10-30T08:00:00Z`	`1988-10-30 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1989-04-02T09:00:00Z`	`1989-04-02 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1989-10-29T08:00:00Z`	`1989-10-29 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1990-04-01T09:00:00Z`	`1990-04-01 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1990-10-28T08:00:00Z`	`1990-10-28 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1991-04-07T09:00:00Z`	`1991-04-07 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1991-10-27T08:00:00Z`	`1991-10-27 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1992-04-05T09:00:00Z`	`1992-04-05 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1992-10-25T08:00:00Z`	`1992-10-25 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1993-04-04T09:00:00Z`	`1993-04-04 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1993-10-31T08:00:00Z`	`1993-10-31 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1994-04-03T09:00:00Z`	`1994-04-03 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1994-10-30T08:00:00Z`	`1994-10-30 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1995-04-02T09:00:00Z`	`1995-04-02 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1995-10-29T08:00:00Z`	`1995-10-29 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1996-04-07T09:00:00Z`	`1996-04-07 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1996-10-27T08:00:00Z`	`1996-10-27 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1997-04-06T09:00:00Z`	`1997-04-06 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1997-10-26T08:00:00Z`	`1997-10-26 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1998-04-05T09:00:00Z`	`1998-04-05 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1998-10-25T08:00:00Z`	`1998-10-25 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1999-04-04T09:00:00Z`	`1999-04-04 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1999-10-31T08:00:00Z`	`1999-10-31 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`2000-04-02T09:00:00Z`	`2000-04-02 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`2000-10-29T08:00:00Z`	`2000-10-29 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`2001-04-01T09:00:00Z`	`2001-04-01 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`2001-10-28T08:00:00Z`	`2001-10-28 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`2002-04-07T09:00:00Z`	`2002-04-07 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`2002-10-27T08:00:00Z`	`2002-10-27 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`2003-04-06T09:00:00Z`	`2003-04-06 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`2003-10-26T08:00:00Z`	`2003-10-26 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`2004-04-04T09:00:00Z`	`2004-04-04 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`2004-10-31T08:00:00Z`	`2004-10-31 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`2005-04-03T09:00:00Z`	`2005-04-03 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`2005-10-30T08:00:00Z`	`2005-10-30 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`2006-04-02T09:00:00Z`	`2006-04-02 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`2006-10-29T08:00:00Z`	`2006-10-29 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`2007-03-11T09:00:00Z`	`2007-03-11 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`2007-11-04T08:00:00Z`	`2007-11-04 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`2008-03-09T09:00:00Z`	`2008-03-09 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`2008-11-02T08:00:00Z`	`2008-11-02 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`2009-03-08T09:00:00Z`	`2009-03-08 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`2009-11-01T08:00:00Z`	`2009-11-01 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`2010-03-14T09:00:00Z`	`2010-03-14 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`2010-11-07T08:00:00Z`	`2010-11-07 02:00:00`	-06:00 → -06:00	`CST`	No	offset-only
`2011-03-13T08:00:00Z`	`2011-03-13 03:00:00`	-06:00 → -05:00	`CDT`	Yes	gap
`2011-11-06T07:00:00Z`	`2011-11-06 01:00:00`	-05:00 → -06:00	`CST`	No	overlap
`2012-03-11T08:00:00Z`	`2012-03-11 03:00:00`	-06:00 → -05:00	`CDT`	Yes	gap
`2012-11-04T07:00:00Z`	`2012-11-04 01:00:00`	-05:00 → -06:00	`CST`	No	overlap
`2013-03-10T08:00:00Z`	`2013-03-10 03:00:00`	-06:00 → -05:00	`CDT`	Yes	gap
`2013-11-03T07:00:00Z`	`2013-11-03 01:00:00`	-05:00 → -06:00	`CST`	No	overlap
`2014-03-09T08:00:00Z`	`2014-03-09 03:00:00`	-06:00 → -05:00	`CDT`	Yes	gap
`2014-11-02T07:00:00Z`	`2014-11-02 01:00:00`	-05:00 → -06:00	`CST`	No	overlap
`2015-03-08T08:00:00Z`	`2015-03-08 03:00:00`	-06:00 → -05:00	`CDT`	Yes	gap
`2015-11-01T07:00:00Z`	`2015-11-01 01:00:00`	-05:00 → -06:00	`CST`	No	overlap
`2016-03-13T08:00:00Z`	`2016-03-13 03:00:00`	-06:00 → -05:00	`CDT`	Yes	gap
`2016-11-06T07:00:00Z`	`2016-11-06 01:00:00`	-05:00 → -06:00	`CST`	No	overlap
`2017-03-12T08:00:00Z`	`2017-03-12 03:00:00`	-06:00 → -05:00	`CDT`	Yes	gap
`2017-11-05T07:00:00Z`	`2017-11-05 01:00:00`	-05:00 → -06:00	`CST`	No	overlap
`2018-03-11T08:00:00Z`	`2018-03-11 03:00:00`	-06:00 → -05:00	`CDT`	Yes	gap
`2018-11-04T07:00:00Z`	`2018-11-04 01:00:00`	-05:00 → -06:00	`CST`	No	overlap
`2019-03-10T08:00:00Z`	`2019-03-10 03:00:00`	-06:00 → -05:00	`CDT`	Yes	gap
`2019-11-03T07:00:00Z`	`2019-11-03 01:00:00`	-05:00 → -06:00	`CST`	No	overlap
`2020-03-08T08:00:00Z`	`2020-03-08 03:00:00`	-06:00 → -05:00	`CDT`	Yes	gap
`2020-11-01T07:00:00Z`	`2020-11-01 01:00:00`	-05:00 → -06:00	`CST`	No	overlap
`2021-03-14T08:00:00Z`	`2021-03-14 03:00:00`	-06:00 → -05:00	`CDT`	Yes	gap
`2021-11-07T07:00:00Z`	`2021-11-07 01:00:00`	-05:00 → -06:00	`CST`	No	overlap
`2022-03-13T08:00:00Z`	`2022-03-13 03:00:00`	-06:00 → -05:00	`CDT`	Yes	gap
`2022-11-06T07:00:00Z`	`2022-11-06 01:00:00`	-05:00 → -06:00	`CST`	No	overlap
`2023-03-12T08:00:00Z`	`2023-03-12 03:00:00`	-06:00 → -05:00	`CDT`	Yes	gap
`2023-11-05T07:00:00Z`	`2023-11-05 01:00:00`	-05:00 → -06:00	`CST`	No	overlap
`2024-03-10T08:00:00Z`	`2024-03-10 03:00:00`	-06:00 → -05:00	`CDT`	Yes	gap
`2024-11-03T07:00:00Z`	`2024-11-03 01:00:00`	-05:00 → -06:00	`CST`	No	overlap
`2025-03-09T08:00:00Z`	`2025-03-09 03:00:00`	-06:00 → -05:00	`CDT`	Yes	gap
`2025-11-02T07:00:00Z`	`2025-11-02 01:00:00`	-05:00 → -06:00	`CST`	No	overlap
`2026-03-08T08:00:00Z`	`2026-03-08 03:00:00`	-06:00 → -05:00	`CDT`	Yes	gap
`2026-11-01T07:00:00Z`	`2026-11-01 01:00:00`	-05:00 → -06:00	`CST`	No	overlap
`2027-03-14T08:00:00Z`	`2027-03-14 03:00:00`	-06:00 → -05:00	`CDT`	Yes	gap
`2027-11-07T07:00:00Z`	`2027-11-07 01:00:00`	-05:00 → -06:00	`CST`	No	overlap
`2028-03-12T08:00:00Z`	`2028-03-12 03:00:00`	-06:00 → -05:00	`CDT`	Yes	gap
`2028-11-05T07:00:00Z`	`2028-11-05 01:00:00`	-05:00 → -06:00	`CST`	No	overlap
`2029-03-11T08:00:00Z`	`2029-03-11 03:00:00`	-06:00 → -05:00	`CDT`	Yes	gap
`2029-11-04T07:00:00Z`	`2029-11-04 01:00:00`	-05:00 → -06:00	`CST`	No	overlap
`2030-03-10T08:00:00Z`	`2030-03-10 03:00:00`	-06:00 → -05:00	`CDT`	Yes	gap
`2030-11-03T07:00:00Z`	`2030-11-03 01:00:00`	-05:00 → -06:00	`CST`	No	overlap
`2031-03-09T08:00:00Z`	`2031-03-09 03:00:00`	-06:00 → -05:00	`CDT`	Yes	gap
`2031-11-02T07:00:00Z`	`2031-11-02 01:00:00`	-05:00 → -06:00	`CST`	No	overlap
`2032-03-14T08:00:00Z`	`2032-03-14 03:00:00`	-06:00 → -05:00	`CDT`	Yes	gap
`2032-11-07T07:00:00Z`	`2032-11-07 01:00:00`	-05:00 → -06:00	`CST`	No	overlap
`2033-03-13T08:00:00Z`	`2033-03-13 03:00:00`	-06:00 → -05:00	`CDT`	Yes	gap
`2033-11-06T07:00:00Z`	`2033-11-06 01:00:00`	-05:00 → -06:00	`CST`	No	overlap
`2034-03-12T08:00:00Z`	`2034-03-12 03:00:00`	-06:00 → -05:00	`CDT`	Yes	gap
`2034-11-05T07:00:00Z`	`2034-11-05 01:00:00`	-05:00 → -06:00	`CST`	No	overlap
`2035-03-11T08:00:00Z`	`2035-03-11 03:00:00`	-06:00 → -05:00	`CDT`	Yes	gap
`2035-11-04T07:00:00Z`	`2035-11-04 01:00:00`	-05:00 → -06:00	`CST`	No	overlap
`2036-03-09T08:00:00Z`	`2036-03-09 03:00:00`	-06:00 → -05:00	`CDT`	Yes	gap
`2036-11-02T07:00:00Z`	`2036-11-02 01:00:00`	-05:00 → -06:00	`CST`	No	overlap
`2037-03-08T08:00:00Z`	`2037-03-08 03:00:00`	-06:00 → -05:00	`CDT`	Yes	gap
`2037-11-01T07:00:00Z`	`2037-11-01 01:00:00`	-05:00 → -06:00	`CST`	No	overlap

Notes from the Maintainers

Source: northamerica (Lines 453 to 466)

From Josh Findley (2011-01-21):
...it appears that Mercer County, North Dakota, changed from the
mountain time zone to the central time zone at the last transition from
daylight-saving to standard time (on Nov. 7, 2010):
https://www.gpo.gov/fdsys/pkg/FR-2010-09-29/html/2010-24376.htm
http://www.bismarcktribune.com/news/local/article_1eb1b588-c758-11df-b472-001cc4c03286.html

From Andy Lipscomb (2011-01-24):
...according to the Census Bureau, the largest city is Beulah (although
it's commonly referred to as Beulah-Hazen, with Hazen being the next
largest city in Mercer County).  Google Maps places Beulah's city hall
at 47° 15' 51" N, 101° 46' 40" W, which yields an offset of 6h47'07".

Attributed Statements:

Josh Findley (2011-01-21):

...it appears that Mercer County, North Dakota, changed from the mountain time zone to the central time zone at the last transition from daylight-saving to standard time (on Nov. 7, 2010): https://www.gpo.gov/fdsys/pkg/FR-2010-09-29/html/2010-24376.htm http://www.bismarcktribune.com/news/local/article_1eb1b588-c758-11df-b472-001cc4c03286.html

Andy Lipscomb (2011-01-24):

...according to the Census Bureau, the largest city is Beulah (although it's commonly referred to as Beulah-Hazen, with Hazen being the next largest city in Mercer County). Google Maps places Beulah's city hall at 47° 15' 51" N, 101° 46' 40" W, which yields an offset of 6h47'07".

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.