|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 Washington DC|
1868 Time Zones - Chatham Islands
The graph above illustrates clock changes in Chatham Islands during 1868.
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.
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|
|1850 — 1867||No changes, UTC +12:13:48 hours all of the period|
|1868||Mon, Nov 2 at 12:00 am||LMT → CHAST||+0:01:12 hours (TZ change)||UTC+12:15h|
|1869 — 1899||No changes, UTC +12:15 hours all of the period|
|* All times are local Chatham Islands time.|
Time Zone History - Chatham Islands
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.