Jayapura time zone history
Jayapura kept local mean time (UTC+9:22:48) until 1932, the seventh-latest switch of the 298 zones with local mean time in the record. On standard time, clocks at Jayapura run 23 minutes behind local mean solar time, the third-largest gap of the 21 zones in Asia whose clocks run behind the sun.
UTC+9
Standard time is UTC+9 (WIT) all year under the current rules.
UTC+9 every day since 1970
Before 1970
Standard time changes
| Date | Change | New standard time | Clock label |
|---|---|---|---|
| Before 1970 | |||
| November 1, 1932 | Local mean time (UTC+9:22:48) replaced | UTC+9 | numeric only |
| September 1, 1944 | Standard time forward 30 minutes | UTC+9:30 | numeric only |
| January 1, 1964 | Standard time back 30 minutes | UTC+9 | WIT |
Also on UTC+9
Palau, East Timor, Japan, South Korea, North Korea, Chita (Russia), Yakutsk (Russia) and Khandyga (Russia).
Clocks next door since 1970
- Port Moresby (Papua New Guinea) (1,054 km): always 1 hour ahead.
- Palau (1,296 km): same time every day.
- Darwin (Australia) (1,549 km): always 30 minutes ahead.
- Bougainville (Papua New Guinea) (1,698 km): usually 1 hour ahead; different on 4,387 days in 2014–2026; 2 hours ahead today.
- East Timor (1,801 km): same time except 8,903 days in 1976–2000.
How it compares
The Jayapura zone has kept UTC+9 since 1964, with no clock changes since 1970.