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Flag for New Zealand Time Zone in Chatham Islands, New Zealand

5:40:20 am CHAST

Saturday, July 22, 2017

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

Location of Chatham IslandsLocation

2017 Time Zones - Chatham Islands

Jan
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The graph above illustrates clock changes in Chatham Islands during 2017.

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.

YearDate & TimeAbbreviationTime ChangeOffset After
2016Sun, Apr 3 at 3:45 amCHADTCHAST-1 hour (DST end)UTC+12:45h
 Sun, Sep 25 at 2:45 amCHASTCHADT+1 hour (DST start)UTC+13:45h
2017Sun, Apr 2 at 3:45 amCHADTCHAST-1 hour (DST end)UTC+12:45h
 Sun, Sep 24 at 2:45 amCHASTCHADT+1 hour (DST start)UTC+13:45h
2018Sun, Apr 1 at 3:45 amCHADTCHAST-1 hour (DST end)UTC+12:45h
 Sun, Sep 30 at 2:45 amCHASTCHADT+1 hour (DST start)UTC+13:45h
2019Sun, Apr 7 at 3:45 amCHADTCHAST-1 hour (DST end)UTC+12:45h
 Sun, Sep 29 at 2:45 amCHASTCHADT+1 hour (DST start)UTC+13:45h
2020Sun, Apr 5 at 3:45 amCHADTCHAST-1 hour (DST end)UTC+12:45h
 Sun, Sep 27 at 2:45 amCHASTCHADT+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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Chatham Islands
New Zealand
5:4020am
Saturday, July 22, 2017