New Zealand observes Daylight Saving Time in the Southern Hemisphere summer. Clocks spring forward on the last Sunday in September and fall back on the first Sunday in April. In 2026, DST starts September 27 and ends April 5.
New Zealand Standard Time (NZST) is UTC+12. During DST, New Zealand Daylight Time (NZDT) is UTC+13, making New Zealand one of the most advanced time zones on the planet. The Chatham Islands are 45 minutes ahead of the mainland: CHAST (UTC+12:45) in winter and CHADT (UTC+13:45) in summer.
New Zealand springs forward in late September, about one week before Australia's DST-observing states (early October). New Zealand and Australia also end DST on the same date — first Sunday in April. During the overlapping period, Sydney (AEDT, UTC+11) is 2 hours behind Auckland (NZDT, UTC+13).
During NZ summer (DST): Auckland (NZDT, UTC+13) is 13 hours ahead of London (GMT) and 18 hours ahead of New York (EST). When the Northern Hemisphere switches to summer time, these gaps narrow — London–Auckland becomes 12h, New York–Auckland becomes 17h.
Yes, DST applies throughout New Zealand including the Chatham Islands. The Chatham Islands maintain their unique 45-minute offset from the mainland in both standard and daylight time.