Africa/Algiers

Time zone identifier: Africa/Algiers

Current civil offset: +01:00 (CET)

Current DST state: Observing Standard Time

First standard time adoption: Adopted on 1891-03-15

Local Mean Time (LMT): +00:12:12 based on geographic meridian

Total recorded transitions: 34 transitions across 5 distinct offsets

Associated countries: DZ

Historical Offset Step Chart (1880 to Present)

Text summary: Africa/Algiers shifted between 5 distinct offsets from 1891-03-15 through the modern era.

Complete Transition History (34 Transitions)

UTC Instant	Local Wall Time	Shift	Abbreviation	DST	Effect
`1891-03-15T23:47:48Z`	`1891-03-15 23:57:09`	+00:12:12 → +00:09:21	`PMT`	No	overlap
`1911-03-10T23:50:39Z`	`1911-03-10 23:50:39`	+00:09:21 → +00:00	`WET`	No	overlap
`1916-06-14T23:00:00Z`	`1916-06-15 00:00:00`	+00:00 → +01:00	`WEST`	Yes	gap
`1916-10-01T23:00:00Z`	`1916-10-01 23:00:00`	+01:00 → +00:00	`WET`	No	overlap
`1917-03-24T23:00:00Z`	`1917-03-25 00:00:00`	+00:00 → +01:00	`WEST`	Yes	gap
`1917-10-07T23:00:00Z`	`1917-10-07 23:00:00`	+01:00 → +00:00	`WET`	No	overlap
`1918-03-09T23:00:00Z`	`1918-03-10 00:00:00`	+00:00 → +01:00	`WEST`	Yes	gap
`1918-10-06T23:00:00Z`	`1918-10-06 23:00:00`	+01:00 → +00:00	`WET`	No	overlap
`1919-03-01T23:00:00Z`	`1919-03-02 00:00:00`	+00:00 → +01:00	`WEST`	Yes	gap
`1919-10-05T23:00:00Z`	`1919-10-05 23:00:00`	+01:00 → +00:00	`WET`	No	overlap
`1920-02-14T23:00:00Z`	`1920-02-15 00:00:00`	+00:00 → +01:00	`WEST`	Yes	gap
`1920-10-23T23:00:00Z`	`1920-10-23 23:00:00`	+01:00 → +00:00	`WET`	No	overlap
`1921-03-14T23:00:00Z`	`1921-03-15 00:00:00`	+00:00 → +01:00	`WEST`	Yes	gap
`1921-06-21T23:00:00Z`	`1921-06-21 23:00:00`	+01:00 → +00:00	`WET`	No	overlap
`1939-09-11T23:00:00Z`	`1939-09-12 00:00:00`	+00:00 → +01:00	`WEST`	Yes	gap
`1939-11-19T00:00:00Z`	`1939-11-19 00:00:00`	+01:00 → +00:00	`WET`	No	overlap
`1940-02-25T02:00:00Z`	`1940-02-25 03:00:00`	+00:00 → +01:00	`CET`	No	gap
`1944-04-03T01:00:00Z`	`1944-04-03 03:00:00`	+01:00 → +02:00	`CEST`	Yes	gap
`1944-10-08T00:00:00Z`	`1944-10-08 01:00:00`	+02:00 → +01:00	`CET`	No	overlap
`1945-04-02T01:00:00Z`	`1945-04-02 03:00:00`	+01:00 → +02:00	`CEST`	Yes	gap
`1945-09-15T23:00:00Z`	`1945-09-16 00:00:00`	+02:00 → +01:00	`CET`	No	overlap
`1946-10-06T23:00:00Z`	`1946-10-06 23:00:00`	+01:00 → +00:00	`WET`	No	overlap
`1956-01-29T00:00:00Z`	`1956-01-29 01:00:00`	+00:00 → +01:00	`CET`	No	gap
`1963-04-13T23:00:00Z`	`1963-04-13 23:00:00`	+01:00 → +00:00	`WET`	No	overlap
`1971-04-25T23:00:00Z`	`1971-04-26 00:00:00`	+00:00 → +01:00	`WEST`	Yes	gap
`1971-09-26T23:00:00Z`	`1971-09-26 23:00:00`	+01:00 → +00:00	`WET`	No	overlap
`1977-05-06T00:00:00Z`	`1977-05-06 01:00:00`	+00:00 → +01:00	`WEST`	Yes	gap
`1977-10-20T23:00:00Z`	`1977-10-21 00:00:00`	+01:00 → +01:00	`CET`	No	offset-only
`1978-03-24T00:00:00Z`	`1978-03-24 02:00:00`	+01:00 → +02:00	`CEST`	Yes	gap
`1978-09-22T01:00:00Z`	`1978-09-22 02:00:00`	+02:00 → +01:00	`CET`	No	overlap
`1979-10-25T23:00:00Z`	`1979-10-25 23:00:00`	+01:00 → +00:00	`WET`	No	overlap
`1980-04-25T00:00:00Z`	`1980-04-25 01:00:00`	+00:00 → +01:00	`WEST`	Yes	gap
`1980-10-31T01:00:00Z`	`1980-10-31 01:00:00`	+01:00 → +00:00	`WET`	No	overlap
`1981-05-01T00:00:00Z`	`1981-05-01 01:00:00`	+00:00 → +01:00	`CET`	No	gap

Notes from the Maintainers

Source: africa (Lines 91 to 92)

See Europe/Paris for PMT-related transitions.
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.