Pacific/Rarotonga

Time zone identifier: Pacific/Rarotonga

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

Current DST state: Observing Standard Time

First standard time adoption: Adopted on 1899-12-25

Local Mean Time (LMT): +13:20:56 based on geographic meridian

Total recorded transitions: 28 transitions across 5 distinct offsets

Associated countries: CK

Historical Offset Step Chart (1880 to Present)

Text summary: Pacific/Rarotonga shifted between 5 distinct offsets from 1899-12-25 through the modern era.

Complete Transition History (28 Transitions)

UTC Instant	Local Wall Time	Shift	Abbreviation	DST	Effect
`1899-12-25T10:39:04Z`	`1899-12-25 00:00:00`	+13:20:56 → -10:39:04	`LMT`	No	overlap
`1952-10-16T10:39:04Z`	`1952-10-16 00:09:04`	-10:39:04 → -10:30	`-1030`	No	gap
`1978-11-12T10:30:00Z`	`1978-11-12 01:00:00`	-10:30 → -09:30	`-0930`	Yes	gap
`1979-03-04T09:30:00Z`	`1979-03-03 23:30:00`	-09:30 → -10:00	`-10`	No	overlap
`1979-10-28T10:00:00Z`	`1979-10-28 00:30:00`	-10:00 → -09:30	`-0930`	Yes	gap
`1980-03-02T09:30:00Z`	`1980-03-01 23:30:00`	-09:30 → -10:00	`-10`	No	overlap
`1980-10-26T10:00:00Z`	`1980-10-26 00:30:00`	-10:00 → -09:30	`-0930`	Yes	gap
`1981-03-01T09:30:00Z`	`1981-02-28 23:30:00`	-09:30 → -10:00	`-10`	No	overlap
`1981-10-25T10:00:00Z`	`1981-10-25 00:30:00`	-10:00 → -09:30	`-0930`	Yes	gap
`1982-03-07T09:30:00Z`	`1982-03-06 23:30:00`	-09:30 → -10:00	`-10`	No	overlap
`1982-10-31T10:00:00Z`	`1982-10-31 00:30:00`	-10:00 → -09:30	`-0930`	Yes	gap
`1983-03-06T09:30:00Z`	`1983-03-05 23:30:00`	-09:30 → -10:00	`-10`	No	overlap
`1983-10-30T10:00:00Z`	`1983-10-30 00:30:00`	-10:00 → -09:30	`-0930`	Yes	gap
`1984-03-04T09:30:00Z`	`1984-03-03 23:30:00`	-09:30 → -10:00	`-10`	No	overlap
`1984-10-28T10:00:00Z`	`1984-10-28 00:30:00`	-10:00 → -09:30	`-0930`	Yes	gap
`1985-03-03T09:30:00Z`	`1985-03-02 23:30:00`	-09:30 → -10:00	`-10`	No	overlap
`1985-10-27T10:00:00Z`	`1985-10-27 00:30:00`	-10:00 → -09:30	`-0930`	Yes	gap
`1986-03-02T09:30:00Z`	`1986-03-01 23:30:00`	-09:30 → -10:00	`-10`	No	overlap
`1986-10-26T10:00:00Z`	`1986-10-26 00:30:00`	-10:00 → -09:30	`-0930`	Yes	gap
`1987-03-01T09:30:00Z`	`1987-02-28 23:30:00`	-09:30 → -10:00	`-10`	No	overlap
`1987-10-25T10:00:00Z`	`1987-10-25 00:30:00`	-10:00 → -09:30	`-0930`	Yes	gap
`1988-03-06T09:30:00Z`	`1988-03-05 23:30:00`	-09:30 → -10:00	`-10`	No	overlap
`1988-10-30T10:00:00Z`	`1988-10-30 00:30:00`	-10:00 → -09:30	`-0930`	Yes	gap
`1989-03-05T09:30:00Z`	`1989-03-04 23:30:00`	-09:30 → -10:00	`-10`	No	overlap
`1989-10-29T10:00:00Z`	`1989-10-29 00:30:00`	-10:00 → -09:30	`-0930`	Yes	gap
`1990-03-04T09:30:00Z`	`1990-03-03 23:30:00`	-09:30 → -10:00	`-10`	No	overlap
`1990-10-28T10:00:00Z`	`1990-10-28 00:30:00`	-10:00 → -09:30	`-0930`	Yes	gap
`1991-03-03T09:30:00Z`	`1991-03-02 23:30:00`	-09:30 → -10:00	`-10`	No	overlap

Notes from the Maintainers

Source: australasia (Lines 635 to 635)

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.