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NZDT/NZST

New Zealand Daylight Time

UTC+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)

MDT/MST

Mountain Daylight Time

UTC−6

yesterday

19h behind

12am

3am

6am

9am

12pm

3pm

6pm

9pm

Mountain Time is on daylight saving time: MDT (UTC−6) until Sun, Nov 1.

Arizona stays on MST (UTC−7).

Denver · MDT (UTC−6)Arizona · MST all year (UTC−7)

Quick answers

Selected conversion

1:00 am01:00 NZDT (UTC+13), Oct 19, 2026 = 6:00 am06:00 MDT (UTC-6), Oct 18, 2026

NZDT is 19 hours ahead of MDT.

NZST and MST examples

These examples always use NZST (UTC+12) and MST (UTC-7). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.

NZST is 19 hours ahead of MST.

Most of Arizona stays on MST (UTC-7) all year. Places such as Denver use MDT (UTC-6) during daylight saving time, one hour later. For daylight-time examples, use NZST to MDT.

How the time difference changes

Depending on seasonal clock changes, NZST is 18 hours ahead of MDT, NZDT is 19 hours ahead of MDT, or NZDT is 20 hours ahead of MST.

Depending on seasonal clock changes, working hours of 9:00 am to 6:00 pm in NZST correspond to 3:00 pm (previous day) to 12:00 am in MDT, working hours of 9:00 am to 6:00 pm in NZDT correspond to 2:00 pm (previous day) to 11:00 pm (previous day) in MDT, or working hours of 9:00 am to 6:00 pm in NZDT correspond to 1:00 pm (previous day) to 10:00 pm (previous day) in MST.Depending on seasonal clock changes, working hours of 09:00 to 18:00 in NZST correspond to 15:00 (previous day) to 00:00 in MDT, working hours of 09:00 to 18:00 in NZDT correspond to 14:00 (previous day) to 23:00 (previous day) in MDT, or working hours of 09:00 to 18:00 in NZDT correspond to 13:00 (previous day) to 22:00 (previous day) in MST.

Compare NZST time with MST 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 19 hours ahead of Mountain Daylight Time.
1:00 am01:00 in NZDT is 6:00 am06:00 in MDT

NZDT to MDT call time
Best time for a conference call or a meeting is between 9am-1pm09:00-13:00 in NZDT which corresponds to 2pm-6pm14:00-18:00 in MDT (previous day)

1:00 am01:00 New Zealand Daylight Time (NZDT). Offset UTC +13:00 hours
6:00 am06:00 Mountain Daylight Time (MDT). Offset UTC -6:00 hours

1:00 am01:00 NZDT / 6:00 am06:00 MDT

Choose an hour to update the converter. Day labels such as “next day” or “+1” are relative to the selected date in the first column. Use Up and Down arrow keys, Home or End to move between hours, then Enter or Space to select.

Hourly time comparison
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New Zealand Standard Time

Offset: NZST is 12 hours ahead of Greenwich Mean Time (GMT).

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.

Map of the areas on New Zealand Standard Time (NZST) — NZST part of the year
Today the shaded areas are on UTC+13 (NZDT).
Open the world time zone map © OpenStreetMap

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 New Zealand daylight saving time and 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
PETT - Kamchatka Time
PETST - Kamchatka Summer Time
TVT - Tuvalu Time
WFT - Wallis and Futuna Time

Mountain Standard Time

Offset: MST is 7 hours behind Greenwich Mean Time (GMT).

Countries using this time zone: Canada, Mexico, United States

Principal Cities: The largest city in the MST time zone is Phoenix in the United States, with about 1.65 million people. Other major cities in this time zone include Ciudad Juárez, Hermosillo, Culiacán, Denver.

French: HNR - Heure Normale des Rocheuses

Spanish: MT - Zona Pacífico

Map of the areas on Mountain Standard Time (MST) — MST all year MST part of the year
Today the lighter areas are on UTC−6 (MDT).
Open the world time zone map © OpenStreetMap

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

End: Mountain Standard Time (MST) ended on Sunday, March 8, 2026 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, March 8, 2026, 3:00 am03:00 local daylight time instead. Standard time ends annually on the second Sunday of March.

Start: Mountain Standard Time (MST) starts on Sunday, November 1, 2026 at 2:00 am02:00 local time and clocks are set one hour back to Sunday, November 1, 2026, 1:00 am01:00. Standard time starts annually on the first Sunday of November.

See USA daylight saving time and upcoming clock changes worldwide.

MST representations, usage and related time zones