| Current: | CHAST — Chatham Island Standard Time |
|---|---|
| Next Change: | CHADT — Chatham Island Daylight Time |
| Current Offset: | UTC/GMT +12:45 hours |
| Difference: | 16:45 hours ahead of Columbus |
2024 Time Zones - Chatham Islands
The graph above illustrates clock changes in Chatham Islands during 2024.
Note that Chatham Islands uses a special quarter-hour time zone.
Chatham Island's Time
The Chatham Island observes Chatham Island Standard Time (CHAST) which is 12 hours and 45 minutes ahead of Coordinated Universal Time (UTC) during standard time. During the Daylight Saving Time (DST) period Chatham Island Daylight Time (CHADT) with a UTC offset of +13:45 is in use.
The island is an external territory of New Zealand and is located 873 kilometers (542 miles) east of Christchurch.
Time Changes in Chatham Islands Over the Years
Daylight Saving Time (DST) changes do not necessarily occur on the same date every year.
| Year | Date & Time | Abbreviation | Time Change | Offset After |
|---|---|---|---|---|
| 2023 | Sun, Apr 2 at 3:45 am | CHADT → CHAST | -1 hour (DST end) | UTC+12:45h |
| Sun, Sep 24 at 2:45 am | CHAST → CHADT | +1 hour (DST start) | UTC+13:45h | |
| 2024 | Sun, Apr 7 at 3:45 am | CHADT → CHAST | -1 hour (DST end) | UTC+12:45h |
| Sun, Sep 29 at 2:45 am | CHAST → CHADT | +1 hour (DST start) | UTC+13:45h | |
| 2025 | Sun, Apr 6 at 3:45 am | CHADT → CHAST | -1 hour (DST end) | UTC+12:45h |
| Sun, Sep 28 at 2:45 am | CHAST → CHADT | +1 hour (DST start) | UTC+13:45h | |
| 2026 | Sun, Apr 5 at 3:45 am | CHADT → CHAST | -1 hour (DST end) | UTC+12:45h |
| Sun, Sep 27 at 2:45 am | CHAST → CHADT | +1 hour (DST start) | UTC+13:45h | |
| 2027 | Sun, Apr 4 at 3:45 am | CHADT → CHAST | -1 hour (DST end) | UTC+12:45h |
| Sun, Sep 26 at 2:45 am | CHAST → CHADT | +1 hour (DST start) | UTC+13:45h | |
| * All times are local Chatham Islands time. Next time change is highlighted. | ||||
Time Zone History - Chatham Islands
The Chatham Islands standardized their time in 1868 to 12 hours and 15 minutes ahead of Greenwich Mean Time (GMT), then the world's time standard.
Even though the Standard Time Act 1945 set the time in New Zealand to UTC+12, the Chatham Islands informally set their clocks 45 minutes forward of the mainland. In 1956, New Zealand’s Parliament formalized the time difference by amending the Standard Time Act 1945. The law was effective from January 1, 1957.
Daylight Saving Time (DST) was introduced to the Chatham Islands and New Zealand in 1974 with the Time Act 1974.
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