America/Regina

Time zone identifier: America/Regina

Current civil offset: -06:00 (CST)

Current DST state: Observing Standard Time

First standard time adoption: Adopted on 1905-09-01

Local Mean Time (LMT): -06:58:36 based on geographic meridian

Total recorded transitions: 53 transitions across 3 distinct offsets

Associated countries: CA

Aliases (Link targets): Canada/Saskatchewan

Historical Offset Step Chart (1880 to Present)

Text summary: America/Regina shifted between 3 distinct offsets from 1905-09-01 through the modern era.

Complete Transition History (53 Transitions)

UTC Instant	Local Wall Time	Shift	Abbreviation	DST	Effect
`1905-09-01T06:58:36Z`	`1905-08-31 23:58:36`	-06:58:36 → -07:00	`MST`	No	overlap
`1918-04-14T09:00:00Z`	`1918-04-14 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
`1930-05-04T07:00:00Z`	`1930-05-04 01:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1930-10-05T06:00:00Z`	`1930-10-04 23:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1931-05-03T07:00:00Z`	`1931-05-03 01:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1931-10-04T06:00:00Z`	`1931-10-03 23:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1932-05-01T07:00:00Z`	`1932-05-01 01:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1932-10-02T06:00:00Z`	`1932-10-01 23:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1933-05-07T07:00:00Z`	`1933-05-07 01:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1933-10-01T06:00:00Z`	`1933-09-30 23:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1934-05-06T07:00:00Z`	`1934-05-06 01:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1934-10-07T06:00:00Z`	`1934-10-06 23:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1937-04-11T07:00:00Z`	`1937-04-11 01:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1937-10-10T06:00:00Z`	`1937-10-09 23:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1938-04-10T07:00:00Z`	`1938-04-10 01:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1938-10-02T06:00:00Z`	`1938-10-01 23:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1939-04-09T07:00:00Z`	`1939-04-09 01:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1939-10-08T06:00:00Z`	`1939-10-07 23:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1940-04-14T07:00:00Z`	`1940-04-14 01:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1940-10-13T06:00:00Z`	`1940-10-12 23:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1941-04-13T07:00:00Z`	`1941-04-13 01:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1941-10-12T06:00:00Z`	`1941-10-11 23:00:00`	-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
`1946-04-14T09:00:00Z`	`1946-04-14 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1946-10-13T08:00:00Z`	`1946-10-13 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1947-04-27T09:00:00Z`	`1947-04-27 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1947-09-28T08:00:00Z`	`1947-09-28 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1948-04-25T09:00:00Z`	`1948-04-25 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1948-09-26T08:00:00Z`	`1948-09-26 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1949-04-24T09:00:00Z`	`1949-04-24 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1949-09-25T08:00:00Z`	`1949-09-25 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1950-04-30T09:00:00Z`	`1950-04-30 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1950-09-24T08:00:00Z`	`1950-09-24 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1951-04-29T09:00:00Z`	`1951-04-29 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1951-09-30T08:00:00Z`	`1951-09-30 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1952-04-27T09:00:00Z`	`1952-04-27 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1952-09-28T08:00:00Z`	`1952-09-28 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1953-04-26T09:00:00Z`	`1953-04-26 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1953-09-27T08:00:00Z`	`1953-09-27 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1954-04-25T09:00:00Z`	`1954-04-25 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1954-09-26T08:00:00Z`	`1954-09-26 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1955-04-24T09:00:00Z`	`1955-04-24 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1955-09-25T08:00:00Z`	`1955-09-25 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1956-04-29T09:00:00Z`	`1956-04-29 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1956-09-30T08:00:00Z`	`1956-09-30 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1957-04-28T09:00:00Z`	`1957-04-28 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1957-09-29T08:00:00Z`	`1957-09-29 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1959-04-26T09:00:00Z`	`1959-04-26 03:00:00`	-07:00 → -06:00	`MDT`	Yes	gap
`1959-10-25T08:00:00Z`	`1959-10-25 01:00:00`	-06:00 → -07:00	`MST`	No	overlap
`1960-04-24T09:00:00Z`	`1960-04-24 03:00:00`	-07:00 → -06:00	`CST`	No	gap

Notes from the Maintainers

Source: northamerica (Lines 1915 to 1915)

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.