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NZDT/NZST

New Zealand Daylight Time

GMT +13

12am

3am

6am

9am

12pm

3pm

6pm

9pm

New Zealand is on daylight saving time: NZDT (UTC+13) until Sun, Apr 4, 2027.

Use NZST all year (UTC+12)

CHADT/CHAST

Chatham Island Daylight Time

GMT +13:45

12am

3am

6am

9am

12pm

3pm

6pm

9pm

Chatham Island is on daylight saving time: CHADT (UTC+13:45) until Sun, Apr 4, 2027.

Use CHAST all year (UTC+12:45)

Quick answers

Selected conversion

1:00 am01:00 NZDT (UTC+13), Oct 13, 2026 = 1:45 am01:45 CHADT (UTC+13:45), Oct 13, 2026

NZDT is 45 minutes behind CHADT.

NZST and CHAST examples

These examples always use NZST (UTC+12) and CHAST (UTC+12:45). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.

NZST is 45 minutes behind CHAST.

How the time difference changes

Depending on seasonal clock changes, NZDT is 45 minutes behind CHADT or NZST is 45 minutes behind CHAST.

Depending on seasonal clock changes, working hours of 9:00 am to 5:00 pm in NZDT correspond to 9:45 am to 5:45 pm in CHADT or working hours of 9:00 am to 5:00 pm in NZST correspond to 9:45 am to 5:45 pm in CHAST.Depending on seasonal clock changes, working hours of 09:00 to 17:00 in NZDT correspond to 09:45 to 17:45 in CHADT or working hours of 09:00 to 17:00 in NZST correspond to 09:45 to 17:45 in CHAST.

Compare NZST time with CHAST time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.

Time Difference

New Zealand Daylight Time is 45 minutes behind Chatham Island Daylight Time.
1:00 am01:00 in NZDT is 1:45 am01:45 in CHADT

NZDT to CHADT call time
Best time for a conference call or a meeting is between 9am-4:15pm09:00-16:15 in NZDT which corresponds to 9:45am-5pm09:45-17:00 in CHADT

1:00 am01:00 New Zealand Daylight Time (NZDT). Offset UTC +13:00 hours
1:45 am01:45 Chatham Island Daylight Time (CHADT). Offset UTC +13:45 hours

1:00 am01:00 NZDT / 1:45 am01:45 CHADT

NZDT	CHADT
12:00am	12:45am
1:00am	1:45am
2:00am	2:45am
3:00am	3:45am
4:00am	4:45am
5:00am	5:45am
6:00am	6:45am
7:00am	7:45am
8:00am	8:45am
9:00am	9:45am
10:00am	10:45am
11:00am	11:45am
12:00pm	12:45pm
1:00pm	1:45pm
2:00pm	2:45pm
3:00pm	3:45pm
4:00pm	4:45pm
5:00pm	5:45pm
6:00pm	6:45pm
7:00pm	7:45pm
8:00pm	8:45pm
9:00pm	9:45pm
10:00pm	10:45pm
11:00pm	11:45pm
00:00	00:45
01:00	01:45
02:00	02:45
03:00	03:45
04:00	04:45
05:00	05:45
06:00	06:45
07:00	07:45
08:00	08:45
09:00	09:45
10:00	10:45
11:00	11:45
12:00	12:45
13:00	13:45
14:00	14:45
15:00	15:45
16:00	16:45
17:00	17:45
18:00	18:45
19:00	19:45
20:00	20:45
21:00	21:45
22:00	22:45
23:00	23:45

New Zealand Standard Time

Offset: NZST is 12 hours ahead Greenwich Mean Time (GMT) and is used in Pacific

Countries using this time zone: Antarctica, New Zealand

Principal Cities: The largest city in the NZST time zone is Auckland in New Zealand, with about 1.547 million people. Other major cities in this time zone include Christchurch, Wellington, Hamilton, Tauranga.

NZST Time Zone Geo Map — NZST timezone map

Daylight Saving: This is a standard time zone. During summer, some places set clocks forward one hour for daylight saving time and observe New Zealand Daylight Time (NZDT).

End: New Zealand Standard Time (NZST) ended on Sunday, September 27, 2026 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, September 27, 2026, 3:00 am03:00 local daylight time instead. Standard time ends annually on the last Sunday of September.

Start: New Zealand Standard Time (NZST) starts on Sunday, April 4, 2027 at 3:00 am03:00 local time and clocks are set one hour back to Sunday, April 4, 2027, 2:00 am02:00. Standard time starts annually on the first Sunday of April.

See upcoming clock changes worldwide.

NZST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data

+12 - basic short
+1200 - basic
+12:00 - extended

Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers

+1200 - sign character (+) followed by a four digit time providing hours (12) and minutes (00) of the offset. Indicates an offset of twelve hours to the east of the zero meridian.

Military/NATO: Used by the U.S. military, Chinese military and others

Mike - Military abbreviation for NZST
M - short form of 'Mike'

IANA/Olson: Reflects NZST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems

Antarctica/McMurdo
Antarctica/South_Pole
NZ
Pacific/Auckland

Time zones with the GMT +12 offset:

ANAST - Anadyr Summer Time
ANAT - Anadyr Time
FJT - Fiji Time
GILT - Gilbert Island Time
M - Mike Time Zone
MAGST - Magadan Summer Time
MHT - Marshall Islands Time
NRT - Nauru Time
NZST - New Zealand Standard Time
PETST - Kamchatka Summer Time
TVT - Tuvalu Time
WFT - Wallis and Futuna Time

Chatham Island Standard Time

Offset: CHAST is 12 hours and 45 minutes ahead Greenwich Mean Time (GMT) and is used in Pacific

Countries using this time zone: New Zealand

CHAST Time Zone Geo Map — CHAST timezone map

Daylight Saving: This is a standard time zone. During summer, some places set clocks forward one hour for daylight saving time and observe Chatham Island Daylight Time (CHADT).

End: Chatham Island Standard Time (CHAST) ended on Sunday, September 27, 2026 at 2:45 am02:45 local time and clocks were set one hour forward to Sunday, September 27, 2026, 3:45 am03:45 local daylight time instead. Standard time ends annually on the last Sunday of September.

Start: Chatham Island Standard Time (CHAST) starts on Sunday, April 4, 2027 at 3:45 am03:45 local time and clocks are set one hour back to Sunday, April 4, 2027, 2:45 am02:45. Standard time starts annually on the first Sunday of April.