Australia/Perth

Time zone identifier: Australia/Perth

Current civil offset: +08:00 (AWST)

Current DST state: Observing Standard Time

First standard time adoption: Adopted on 1895-11-30

Local Mean Time (LMT): +07:43:24 based on geographic meridian

Total recorded transitions: 19 transitions across 3 distinct offsets

Associated countries: AU

Aliases (Link targets): Australia/West

Historical Offset Step Chart (1880 to Present)

Text summary: Australia/Perth shifted between 3 distinct offsets from 1895-11-30 through the modern era.

Complete Transition History (19 Transitions)

UTC Instant	Local Wall Time	Shift	Abbreviation	DST	Effect
`1895-11-30T16:16:36Z`	`1895-12-01 00:16:36`	+07:43:24 → +08:00	`AWST`	No	gap
`1916-12-31T18:00:00Z`	`1917-01-01 03:00:00`	+08:00 → +09:00	`AWDT`	Yes	gap
`1917-03-24T18:00:00Z`	`1917-03-25 02:00:00`	+09:00 → +08:00	`AWST`	No	overlap
`1941-12-31T18:00:00Z`	`1942-01-01 03:00:00`	+08:00 → +09:00	`AWDT`	Yes	gap
`1942-03-28T18:00:00Z`	`1942-03-29 02:00:00`	+09:00 → +08:00	`AWST`	No	overlap
`1942-09-26T18:00:00Z`	`1942-09-27 03:00:00`	+08:00 → +09:00	`AWDT`	Yes	gap
`1943-03-27T18:00:00Z`	`1943-03-28 02:00:00`	+09:00 → +08:00	`AWST`	No	overlap
`1974-10-26T18:00:00Z`	`1974-10-27 03:00:00`	+08:00 → +09:00	`AWDT`	Yes	gap
`1975-03-01T18:00:00Z`	`1975-03-02 02:00:00`	+09:00 → +08:00	`AWST`	No	overlap
`1983-10-29T18:00:00Z`	`1983-10-30 03:00:00`	+08:00 → +09:00	`AWDT`	Yes	gap
`1984-03-03T18:00:00Z`	`1984-03-04 02:00:00`	+09:00 → +08:00	`AWST`	No	overlap
`1991-11-16T18:00:00Z`	`1991-11-17 03:00:00`	+08:00 → +09:00	`AWDT`	Yes	gap
`1992-02-29T18:00:00Z`	`1992-03-01 02:00:00`	+09:00 → +08:00	`AWST`	No	overlap
`2006-12-02T18:00:00Z`	`2006-12-03 03:00:00`	+08:00 → +09:00	`AWDT`	Yes	gap
`2007-03-24T18:00:00Z`	`2007-03-25 02:00:00`	+09:00 → +08:00	`AWST`	No	overlap
`2007-10-27T18:00:00Z`	`2007-10-28 03:00:00`	+08:00 → +09:00	`AWDT`	Yes	gap
`2008-03-29T18:00:00Z`	`2008-03-30 02:00:00`	+09:00 → +08:00	`AWST`	No	overlap
`2008-10-25T18:00:00Z`	`2008-10-26 03:00:00`	+08:00 → +09:00	`AWDT`	Yes	gap
`2009-03-28T18:00:00Z`	`2009-03-29 02:00:00`	+09:00 → +08:00	`AWST`	No	overlap

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.