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NZST to CHAST Converter

Updating current time…
NZST
New Zealand Standard Time
GMT +12
12am
3am
6am
9am
12pm
3pm
6pm
9pm
NZST is not used on this date
This converter keeps NZST at GMT +12. Auckland uses NZDT (GMT +13) on this date. Open the NZDT converter, or choose Auckland, Christchurch, or Wellington for city-specific time.
CHAST
Chatham Island Standard Time
GMT +12:45
12am
3am
6am
9am
12pm
3pm
6pm
9pm
CHAST is not used on this date
This converter keeps CHAST at GMT +12:45. Chatham uses CHADT (GMT +13:45) on this date. Open the CHADT converter.

Quick answers

Selected conversion

The selected date and time will appear here when the converter loads.

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

NZST is 45 minutes behind CHAST year-round.

Working hours of 9:00 am to 5:00 pm in NZST correspond to 9:45 am to 5:45 pm 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 Standard Time is 0 hours and 45 minutes behind Chatham Island Standard Time
12:00 pm12:00 in NZST is 12:45 pm12:45 in CHAST

NZST to CHAST call time
Best time for a conference call or a meeting is between 9am-4:15pm in NZST which corresponds to 9:45am-5pm in CHAST

12:00 pm12:00 New Zealand Standard Time (NZST). Offset UTC +12:00 hours
12:45 pm12:45 Chatham Island Standard Time (CHAST). Offset UTC +12:45 hours

12:00 pm12:00 NZST / 12:45 pm12:45 CHAST

NZSTCHAST
12am (midnight)12:45 am
1am1:45 am
2am2:45 am
3am3:45 am
4am4:45 am
5am5:45 am
6am6:45 am
7am7:45 am
8am8:45 am
9am9:45 am
10am10:45 am
11am11:45 am
12pm (noon)12:45 pm
1pm1:45 pm
2pm2:45 pm
3pm3:45 pm
4pm4:45 pm
5pm5:45 pm
6pm6:45 pm
7pm7:45 pm
8pm8:45 pm
9pm9:45 pm
10pm10:45 pm
11pm11:45 pm
00:0000:45
01:0001:45
02:0002:45
03:0003:45
04:0004:45
05:0005:45
06:0006:45
07:0007:45
08:0008:45
09:0009:45
10:0010:45
11:0011:45
12:0012:45
13:0013:45
14:0014:45
15:0015:45
16:0016:45
17:0017:45
18:0018:45
19:0019:45
20:0020:45
21:0021:45
22:0022:45
23:0023:45

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).

Daylight saving time clock moves forward for one hour from 2am to 3amEnd: New Zealand Standard Time (NZST) ended on Sunday, September 27, 2026 at 2:00 am local time and clocks were set one hour forward to Sunday, September 27, 2026, 3:00 am local daylight time instead. Standard time ends annually on the last Sunday of September.

Daylight saving time clock moves back for one hour from 3am to 2amStart: New Zealand Standard Time (NZST) starts on Sunday, April 4, 2027 at 3:00 am local time and clocks are set one hour back to Sunday, April 4, 2027, 2:00 am. Standard time starts annually on the first Sunday of April.

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

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 am local time and clocks were set one hour forward to Sunday, September 27, 2026, 3:45 am 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 am local time and clocks are set one hour back to Sunday, April 4, 2027, 2:45 am. Standard time starts annually on the first Sunday of April.

CHAST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +1245 - basic
  • +12:45 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +1245 - sign character (+) followed by a four digit time providing hours (12) and minutes (45) of the offset. Indicates an offset of twelve hours and forty-five minutes to the east of the zero meridian.
EST to ISTGMT to ESTPST to ESTEST to GMTPST to GMT