NZDT to MST
-20hNZDT
NZDTSOURCEMST
MSTGreen rows indicate typical business hours (9 AM - 5 PM)
NZDT and MST on the World Map
The map below highlights the NZDT (New Zealand Daylight Time) and MST (Mountain Standard Time) timezone regions across the globe.
NZDT – New Zealand Daylight Time
UTC+13:00New Zealand Daylight Time (NZDT, UTC+13:00) is New Zealand's summer time zone, one of the earliest offsets in the world.
- •NZDT runs from the last Sunday in September to the first Sunday in April.
- •NZDT is UTC+13:00 — one of the earliest time offsets used anywhere.
- •New Zealand changes its clocks two to three weeks before Australia.
- •The Chatham Islands observe UTC+13:45 during their summer time.
MST – Mountain Standard Time
UTC-07:00Mountain Standard Time (MST) is the time zone for the Mountain region of North America, 7 hours behind UTC.
- •Arizona does not observe daylight saving time, staying on MST year-round.
- •The Navajo Nation in Arizona does observe DST, unlike the rest of the state.
- •Denver, the 'Mile High City', is the largest city fully in MST.
- •MST covers 6 US states entirely and parts of several others.
Understanding the -20h Gap: NZDT vs MST
NZDT runs on New Zealand Daylight Time (NZDT) at UTC+13:00. MST runs on Mountain Standard Time (MST) at UTC-07:00. That puts NZDT 20 hours behind MST — a difference of -20h at the current offsets.
In practice, when it is 9:00 AM in NZDT it is 1:00 PM in MST on the previous day. Midnight in NZDT is 4:00 AM in MST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
NZDT to MST time conversion table
| NZDT (NZDT) | MST (MST) | Day |
|---|---|---|
| 12:00 AM | 4:00 AM | previous day |
| 6:00 AM | 10:00 AM | previous day |
| 7:00 AM | 11:00 AM | previous day |
| 8:00 AM | 12:00 PM | previous day |
| 9:00 AM | 1:00 PM | previous day |
| 12:00 PM | 4:00 PM | previous day |
| 3:00 PM | 7:00 PM | previous day |
| 5:00 PM | 9:00 PM | previous day |
| 6:00 PM | 10:00 PM | previous day |
| 9:00 PM | 1:00 AM | same day |
Why people convert NZDT to MST time
- Scheduling a call from NZDT to MST: a 10:00 AM start in NZDT lands at 2:00 PM in MST the previous day, so you can confirm the slot without doing the arithmetic yourself.
- Handling a -20h gap: NZDT and MST have no overlap inside a normal 9-to-5 day, so real-time meetings need an early-morning or late-evening slot on one side. 9:00 AM in MST is 1:00 PM in NZDT.
- Booking travel or deliveries: tracking MST local time against NZDT keeps pickup windows and arrival estimates honest across the -20h offset.
- Always state the zone abbreviation, not just the hour. "3:00 PM NZDT" is unambiguous; "3 PM" across a -20h gap is not.
- With a -20h gap there is no shared 9-to-5 window, so alternate the early start: one week NZDT takes the early slot, the next week MST does.
About NZDT (New Zealand Daylight Time)
New Zealand Daylight Time (NZDT) is the summer time zone for New Zealand, one hour ahead of New Zealand Standard Time (NZST, UTC+12:00). It runs from the last Sunday in September to the first Sunday in April, so New Zealand shifts a week or two earlier in spring than Australia. At UTC+13:00, NZDT is among the earliest offsets in the world — only Samoa, Tonga and parts of Kiribati run further ahead at certain times of year. Auckland and Wellington are 13 hours ahead of UTC during NZDT, 12 hours ahead of Sydney, and 18 hours ahead of New York. The Chatham Islands, 45 minutes further east, move to UTC+13:45.
About MST (Mountain Standard Time)
Mountain Standard Time (MST) covers the Rocky Mountain region of the United States and Canada. Arizona is notable for not observing daylight saving time, staying on MST year-round (except the Navajo Nation). The time zone includes major cities like Denver, Phoenix, Calgary, and Salt Lake City. During summer, most areas switch to Mountain Daylight Time (MDT, UTC-06:00).
Best time to call between NZDT and MST
With a -20h offset there is no overlap inside a normal 9 AM – 5 PM day. MST opens at 9:00 AM MST, which is 1:00 PM in NZDT, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
NZDT and MST have no shared working hours because of the -20h gap. Teams need to alternate early starts or rely on asynchronous handovers.
NZDT is 20 hours behind MST (NZDT UTC+13:00 → MST UTC-07:00). There is no shared 9-to-5 window, so plan around an early or late slot. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
NZDT
☀ Currently in DST
Standard: UTC+12:00 · DST: UTC+13:00
Clocks fall back on Sat, Apr 3, 2027
MST
☀ Currently in DST
Standard: UTC-07:00 · DST: UTC-06:00
Clocks fall back on Sun, Nov 1, 2026
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between NZDT and MST?
NZDT (NZDT, UTC+13:00) is 20 hours behind MST (MST, UTC-07:00). The gap is currently -20h.
How do I convert NZDT time to MST time?
Add -20h to NZDT local time. For example, 9:00 AM in NZDT is 1:00 PM in MST (previous day).
What time is it in MST right now?
MST uses MST at UTC-07:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -20h offset from NZDT.
What is the best time to call MST from NZDT?
There is no shared working-hours window because of the -20h gap. The closest option is 1:00 PM in NZDT, which is 5:00 PM in MST.
Which is behind, NZDT or MST?
NZDT is 20 hours behind MST. When it is 12:00 PM in NZDT it is 4:00 PM in MST.
Does daylight saving time affect the NZDT–MST difference?
Neither zone observes daylight saving time, so the -20h offset between NZDT and MST is fixed all year.
Which other cities share NZDT's time zone?
NZDT also covers Auckland, Wellington, Christchurch, Hamilton, Dunedin.
Which countries use NZDT, NZDT's zone?
NZDT is used in New Zealand.
Is there a day difference between NZDT and MST?
Sometimes. The -20h gap is large enough that 8:00 PM or later in NZDT already falls on the in MST.
What is the time difference between NZDT and MST?
MST is -20h from NZDT.
What timezone is NZDT in?
NZDT operates on its local timezone.
What timezone is MST in?
MST operates on its local timezone.
Which countries use NZDT (New Zealand Daylight Time)?
NZDT is used in New Zealand.
Does NZDT observe daylight saving time?
Yes, NZDT switches to NZDT during summer months.
What are some interesting facts about NZDT?
NZDT runs from the last Sunday in September to the first Sunday in April. NZDT is UTC+13:00 — one of the earliest time offsets used anywhere.
Which cities are in the MST timezone?
Major cities in the MST timezone include Denver, Phoenix, Salt Lake City, Calgary, Edmonton, Albuquerque, El Paso, Tucson.
What is the UTC offset for MST?
Mountain Standard Time (MST) is at UTC-07:00. During daylight saving time, it shifts to MDT.
What should I know about the MST timezone?
Arizona does not observe daylight saving time, staying on MST year-round. The Navajo Nation in Arizona does observe DST, unlike the rest of the state.
When is it midnight in NZDT, what time is it in MST?
When it is 12:00 AM (midnight) in NZDT (NZDT), it is -20h later in MST (MST).
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- singapore to nzdt
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- paris to nzdt
- delhi to nzdt
- mumbai to nzdt
- berlin to nzdt
- hong kong to nzdt
- toronto to nzdt
- kathmandu to nzdt
See every conversion from NZDT →·See every conversion from MST →