Time zone history in Oceania and the Pacific
42 zones of the tz database have their reference point in Oceania and the Pacific. They use 17 different standard times today; the most common is UTC+10, kept by 8 zones. 11 still change their clocks during the year. 12 used daylight saving time at some point since 1970 and no longer do, most recently in 2021. The record with the most changes of standard time since 1970 is Kiritimati, with twice.
Standard times in use
Every zone, with its clock changes since 1970
The strip shows 1970 to 2028; amber marks years with seasonal clock changes.
| Zone | Standard time | Clock changes today | New standard times since 1970 | 1970 to 2028 |
|---|---|---|---|---|
| Kiritimati, Kiribati | UTC+14 | no | 2 | |
| Samoa | UTC+13 | no (last 2021) | 1 | |
| Tokelau | UTC+13 | no | 1 | |
| Kanton Island, Kiribati | UTC+13 | no | 2 | |
| Tonga | UTC+13 | no (last 2017) | 0 | |
| Chatham Islands, New Zealand | UTC+12:45 | yes | 0 | |
| Auckland, New Zealand | UTC+12 | yes | 0 | |
| Fiji | UTC+12 | no (last 2021) | 0 | |
| Marshall Islands | UTC+12 | no | 1 | |
| Nauru | UTC+12 | no | 1 | |
| Tarawa, Kiribati | UTC+12 | no | 0 | |
| Bougainville, Papua New Guinea | UTC+11 | no | 1 | |
| Vanuatu | UTC+11 | no (last 1993) | 0 | |
| Solomon Islands | UTC+11 | no | 0 | |
| Micronesia | UTC+11 | no | 1 | |
| Norfolk Island | UTC+11 | yes | 1 | |
| New Caledonia | UTC+11 | no (last 1997) | 0 | |
| Lord Howe Island, Australia | UTC+10:30 | yes | 1 | |
| Brisbane, Australia | UTC+10 | no (last 1992) | 0 | |
| Guam | UTC+10 | no (last 1977) | 0 | |
| Hobart, Australia | UTC+10 | yes | 0 | |
| Lindeman, Australia | UTC+10 | no (last 1994) | 0 | |
| Macquarie Island, Australia | UTC+10 | yes | 0 | |
| Melbourne, Australia | UTC+10 | yes | 0 | |
| Port Moresby, Papua New Guinea | UTC+10 | no | 0 | |
| Sydney, Australia | UTC+10 | yes | 0 | |
| Adelaide, Australia | UTC+9:30 | yes | 0 | |
| Broken Hill, Australia | UTC+9:30 | yes | 0 | |
| Darwin, Australia | UTC+9:30 | no | 0 | |
| Palau | UTC+9 | no | 0 | |
| Eucla, Australia | UTC+8:45 | no (last 2009) | 0 | |
| Perth, Australia | UTC+8 | no (last 2009) | 0 | |
| Easter Island, Chile | UTC−6 | yes | 1 | |
| Galápagos Islands, Ecuador | UTC−6 | no (last 1993) | 1 | |
| Pitcairn Islands | UTC−8 | no | 1 | |
| Gambier Islands, French Polynesia | UTC−9 | no | 0 | |
| Marquesas Islands, French Polynesia | UTC−9:30 | no | 0 | |
| Honolulu, United States | UTC−10 | no | 0 | |
| Cook Islands | UTC−10 | no (last 1991) | 1 | |
| Tahiti, French Polynesia | UTC−10 | no | 0 | |
| Niue | UTC−11 | no | 0 | |
| American Samoa | UTC−11 | no | 0 |