MST to NZST
+19hMST
MSTSOURCENZST
NZSTGreen rows indicate typical business hours (9 AM - 5 PM)
MST and NZST on the World Map
The map below highlights the MST (Mountain Standard Time) and NZST (New Zealand Standard Time) timezone regions across the globe.
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.
NZST – New Zealand Standard Time
UTC+12:00New Zealand Standard Time (NZST) is the time zone for New Zealand, 12 hours ahead of UTC.
- •New Zealand is among the first major countries to see a new day.
- •NZST is 17 hours ahead of EST.
- •New Zealand observes DST from September to April (Southern Hemisphere summer).
Comparing Time Zones: MST and NZST
MST runs on Mountain Standard Time (MST) at UTC-07:00. NZST runs on New Zealand Standard Time (NZST) at UTC+12:00. That puts MST 19 hours ahead of NZST — a difference of +19h at the current offsets.
In practice, when it is 9:00 AM in MST it is 4:00 AM in NZST on the next day. Midnight in MST is 7:00 PM in NZST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
MST to NZST time conversion table
| MST (MST) | NZST (NZST) | Day |
|---|---|---|
| 12:00 AM | 7:00 PM | same day |
| 6:00 AM | 1:00 AM | next day |
| 7:00 AM | 2:00 AM | next day |
| 8:00 AM | 3:00 AM | next day |
| 9:00 AM | 4:00 AM | next day |
| 12:00 PM | 7:00 AM | next day |
| 3:00 PM | 10:00 AM | next day |
| 5:00 PM | 12:00 PM | next day |
| 6:00 PM | 1:00 PM | next day |
| 9:00 PM | 4:00 PM | next day |
Why people convert MST to NZST time
- Scheduling a call from MST to NZST: a 10:00 AM start in MST lands at 5:00 AM in NZST the next day, so you can confirm the slot without doing the arithmetic yourself.
- Handling a +19h gap: MST and NZST 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 NZST is 4:00 AM in MST.
- Watching a live event or market open: MST viewers need 4:00 AM in NZST to catch a 9:00 AM start there, and 5:00 AM if the event is anchored to MST.
- Always state the zone abbreviation, not just the hour. "3:00 PM MST" is unambiguous; "3 PM" across a +19h gap is not.
- With a +19h gap there is no shared 9-to-5 window, so alternate the early start: one week MST takes the early slot, the next week NZST does.
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).
About NZST (New Zealand Standard Time)
New Zealand Standard Time (NZST) is the standard time zone for New Zealand and its dependencies. New Zealand is among the first countries to see a new calendar day. During summer (September to April), clocks advance to New Zealand Daylight Time (NZDT, UTC+13:00).
Best time to call between MST and NZST
With a +19h offset there is no overlap inside a normal 9 AM – 5 PM day. NZST opens at 9:00 AM NZST, which is 4:00 AM in MST, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
MST and NZST have no shared working hours because of the +19h gap. Teams need to alternate early starts or rely on asynchronous handovers.
MST is 19 hours ahead of NZST (MST UTC-07:00 → NZST UTC+12:00). 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
MST
☀ Currently in DST
Standard: UTC-07:00 · DST: UTC-06:00
Clocks fall back on Sun, Nov 1, 2026
NZST
☀ Currently in DST
Standard: UTC+12:00 · DST: UTC+13:00
Clocks fall back on Sat, Apr 3, 2027
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 MST and NZST?
MST (MST, UTC-07:00) is 19 hours ahead of NZST (NZST, UTC+12:00). The gap is currently +19h.
How do I convert MST time to NZST time?
Add +19h to MST local time. For example, 9:00 AM in MST is 4:00 AM in NZST (next day).
What time is it in NZST right now?
NZST uses NZST at UTC+12:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +19h offset from MST.
What is the best time to call NZST from MST?
There is no shared working-hours window because of the +19h gap. The closest option is 1:00 PM in MST, which is 8:00 AM in NZST.
Which is ahead, MST or NZST?
MST is 19 hours ahead of NZST. When it is 12:00 PM in MST it is 7:00 AM in NZST.
Does daylight saving time affect the MST–NZST difference?
Neither zone observes daylight saving time, so the +19h offset between MST and NZST is fixed all year.
Which other cities share MST's time zone?
MST also covers Denver, Phoenix, Salt Lake City, Calgary, Edmonton, Albuquerque, El Paso, Tucson and 2 more.
Which countries use MST, MST's zone?
MST is used in United States (Mountain), Canada (Alberta), Mexico (Chihuahua, Sonora).
Is there a day difference between MST and NZST?
Sometimes. The +19h gap is large enough that 8:00 PM or later in MST already falls on the next day in NZST.
What is the time difference between MST and NZST?
NZST is +19h from MST.
What timezone is MST in?
MST operates on its local timezone.
What timezone is NZST in?
NZST operates on its local timezone.
Which countries use MST (Mountain Standard Time)?
MST is used in United States (Mountain), Canada (Alberta), Mexico (Chihuahua, Sonora).
Does MST observe daylight saving time?
Yes, MST switches to MDT during summer months.
What are some interesting facts about MST?
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.
Which cities are in the NZST timezone?
Major cities in the NZST timezone include Auckland, Wellington, Christchurch, Hamilton, Dunedin.
What is the UTC offset for NZST?
New Zealand Standard Time (NZST) is at UTC+12:00. During daylight saving time, it shifts to NZDT.
What should I know about the NZST timezone?
New Zealand is among the first major countries to see a new day. NZST is 17 hours ahead of EST.
When is it midnight in MST, what time is it in NZST?
When it is 12:00 AM (midnight) in MST (MST), it is +19h later in NZST (NZST).
Related Developer Tools
Explore more tools that work great with timezone conversions for international teams:
Related Timezone Conversions
More MST time conversions
- mst to denver
- mst to mdt
- mst to new york
- mst to london
- mst to dubai
- mst to tokyo
- mst to singapore
- mst to sydney
- mst to los angeles
- mst to paris
- mst to delhi
- mst to mumbai
- mst to berlin
- mst to hong kong
- mst to toronto
- mst to kathmandu
- new york to mst
- london to mst
- dubai to mst
- tokyo to mst
- singapore to mst
- sydney to mst
- los angeles to mst
- paris to mst
- delhi to mst
- mumbai to mst
- berlin to mst
- hong kong to mst
- toronto to mst
- kathmandu to mst
See every conversion from MST →·See every conversion from NZST →