Africa/Juba

Time zone identifier: Africa/Juba

Current civil offset: +02:00 (CAT)

Current DST state: Observing Standard Time

First standard time adoption: Adopted on 1930-12-31

Local Mean Time (LMT): +02:06:28 based on geographic meridian

Total recorded transitions: 35 transitions across 3 distinct offsets

Associated countries: SS

Historical Offset Step Chart (1880 to Present)

Text summary: Africa/Juba shifted between 3 distinct offsets from 1930-12-31 through the modern era.

Complete Transition History (35 Transitions)

UTC Instant	Local Wall Time	Shift	Abbreviation	DST	Effect
`1930-12-31T21:53:32Z`	`1930-12-31 23:53:32`	+02:06:28 → +02:00	`CAT`	No	overlap
`1970-04-30T22:00:00Z`	`1970-05-01 01:00:00`	+02:00 → +03:00	`CAST`	Yes	gap
`1970-10-14T21:00:00Z`	`1970-10-14 23:00:00`	+03:00 → +02:00	`CAT`	No	overlap
`1971-04-29T22:00:00Z`	`1971-04-30 01:00:00`	+02:00 → +03:00	`CAST`	Yes	gap
`1971-10-14T21:00:00Z`	`1971-10-14 23:00:00`	+03:00 → +02:00	`CAT`	No	overlap
`1972-04-29T22:00:00Z`	`1972-04-30 01:00:00`	+02:00 → +03:00	`CAST`	Yes	gap
`1972-10-14T21:00:00Z`	`1972-10-14 23:00:00`	+03:00 → +02:00	`CAT`	No	overlap
`1973-04-28T22:00:00Z`	`1973-04-29 01:00:00`	+02:00 → +03:00	`CAST`	Yes	gap
`1973-10-14T21:00:00Z`	`1973-10-14 23:00:00`	+03:00 → +02:00	`CAT`	No	overlap
`1974-04-27T22:00:00Z`	`1974-04-28 01:00:00`	+02:00 → +03:00	`CAST`	Yes	gap
`1974-10-14T21:00:00Z`	`1974-10-14 23:00:00`	+03:00 → +02:00	`CAT`	No	overlap
`1975-04-26T22:00:00Z`	`1975-04-27 01:00:00`	+02:00 → +03:00	`CAST`	Yes	gap
`1975-10-14T21:00:00Z`	`1975-10-14 23:00:00`	+03:00 → +02:00	`CAT`	No	overlap
`1976-04-24T22:00:00Z`	`1976-04-25 01:00:00`	+02:00 → +03:00	`CAST`	Yes	gap
`1976-10-14T21:00:00Z`	`1976-10-14 23:00:00`	+03:00 → +02:00	`CAT`	No	overlap
`1977-04-23T22:00:00Z`	`1977-04-24 01:00:00`	+02:00 → +03:00	`CAST`	Yes	gap
`1977-10-14T21:00:00Z`	`1977-10-14 23:00:00`	+03:00 → +02:00	`CAT`	No	overlap
`1978-04-29T22:00:00Z`	`1978-04-30 01:00:00`	+02:00 → +03:00	`CAST`	Yes	gap
`1978-10-14T21:00:00Z`	`1978-10-14 23:00:00`	+03:00 → +02:00	`CAT`	No	overlap
`1979-04-28T22:00:00Z`	`1979-04-29 01:00:00`	+02:00 → +03:00	`CAST`	Yes	gap
`1979-10-14T21:00:00Z`	`1979-10-14 23:00:00`	+03:00 → +02:00	`CAT`	No	overlap
`1980-04-26T22:00:00Z`	`1980-04-27 01:00:00`	+02:00 → +03:00	`CAST`	Yes	gap
`1980-10-14T21:00:00Z`	`1980-10-14 23:00:00`	+03:00 → +02:00	`CAT`	No	overlap
`1981-04-25T22:00:00Z`	`1981-04-26 01:00:00`	+02:00 → +03:00	`CAST`	Yes	gap
`1981-10-14T21:00:00Z`	`1981-10-14 23:00:00`	+03:00 → +02:00	`CAT`	No	overlap
`1982-04-24T22:00:00Z`	`1982-04-25 01:00:00`	+02:00 → +03:00	`CAST`	Yes	gap
`1982-10-14T21:00:00Z`	`1982-10-14 23:00:00`	+03:00 → +02:00	`CAT`	No	overlap
`1983-04-23T22:00:00Z`	`1983-04-24 01:00:00`	+02:00 → +03:00	`CAST`	Yes	gap
`1983-10-14T21:00:00Z`	`1983-10-14 23:00:00`	+03:00 → +02:00	`CAT`	No	overlap
`1984-04-28T22:00:00Z`	`1984-04-29 01:00:00`	+02:00 → +03:00	`CAST`	Yes	gap
`1984-10-14T21:00:00Z`	`1984-10-14 23:00:00`	+03:00 → +02:00	`CAT`	No	overlap
`1985-04-27T22:00:00Z`	`1985-04-28 01:00:00`	+02:00 → +03:00	`CAST`	Yes	gap
`1985-10-14T21:00:00Z`	`1985-10-14 23:00:00`	+03:00 → +02:00	`CAT`	No	overlap
`2000-01-15T10:00:00Z`	`2000-01-15 13:00:00`	+02:00 → +03:00	`EAT`	No	gap
`2021-01-31T21:00:00Z`	`2021-01-31 23:00:00`	+03:00 → +02:00	`CAT`	No	overlap

Notes from the Maintainers

Source: africa (Lines 1223 to 1231)

South Sudan

From Steffen Thorsen (2021-01-18):
"South Sudan will change its time zone by setting the clock back 1
hour on February 1, 2021...."
from https://eyeradio.org/south-sudan-adopts-new-time-zone-makuei/

Zone	NAME		STDOFF	RULES	FORMAT	[UNTIL]

Attributed Statements:

Steffen Thorsen (2021-01-18):

"South Sudan will change its time zone by setting the clock back 1 hour on February 1, 2021...." from https://eyeradio.org/south-sudan-adopts-new-time-zone-makuei/ 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.