MST to Denver
+1hMST
MSTSOURCEDenver
MDTGreen rows indicate typical business hours (9 AM - 5 PM)
MST and MDT on the World Map
The map below highlights the MST (Mountain Standard Time) and MDT (Mountain 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.
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.
About Denver
WikipediaDenver operates on Mountain Time (MST/MDT), 2 hours behind New York. As a tech and aerospace hub, Denver bridges West Coast and Central US business hours.
Denver International Airport is the largest airport in North America by land area.
Time Conversion Guide: MST to Denver
MST runs on Mountain Standard Time (MST) at UTC-07:00. Denver runs on Mountain Daylight Time (MDT) at UTC-06:00, also currently on daylight saving time. That puts MST 1 hour ahead of Denver — a difference of +1h at the current offsets.
In practice, when it is 9:00 AM in MST it is 10:00 AM in Denver. Midnight in MST is 1:00 AM in Denver.Denver observes daylight saving time while MST does not, so the gap narrows or widens by an hour part of the year.
MST to Denver time conversion table
| MST (MST) | Denver (MDT) | Day |
|---|---|---|
| 12:00 AM | 1:00 AM | same day |
| 6:00 AM | 7:00 AM | same day |
| 7:00 AM | 8:00 AM | same day |
| 8:00 AM | 9:00 AM | same day |
| 9:00 AM | 10:00 AM | same day |
| 12:00 PM | 1:00 PM | same day |
| 3:00 PM | 4:00 PM | same day |
| 5:00 PM | 6:00 PM | same day |
| 6:00 PM | 7:00 PM | same day |
| 9:00 PM | 10:00 PM | same day |
Why people convert MST to Denver time
- Scheduling a call from MST to Denver: a 10:00 AM start in MST lands at 11:00 AM in Denver, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both MST and Denver are inside the 9-to-5 working day between 9:00 AM and 4:00 PM MST time (10:00 AM–5:00 PM MDT). That is roughly 7 hours of usable overlap.
- Booking travel or deliveries: tracking Denver local time against MST keeps pickup windows and arrival estimates honest across the +1h offset.
- Always state the zone abbreviation, not just the hour. "3:00 PM MST" is unambiguous; "3 PM" across a +1h gap is not.
- Block 9:00 AM–4:00 PM MST as the recurring meeting window if you work primarily from MST and need Denver colleagues present.
- Denver: Clocks fall back on Sun, Nov 1, 2026. Any meeting series spanning that date will shift by an hour in local time.
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 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 MST and Denver
Both MST and Denver sit inside the 9 AM – 5 PM working day between 9:00 AM–4:00 PM MST, which is 10:00 AM–5:00 PM MDT. That gives roughly 7 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
MST and Denver share 7 hours of working-hours overlap (9:00 AM–4:00 PM MST), so scheduling a live meeting is straightforward.
MST is 1 hour ahead of Denver (MST UTC-07:00 → MDT UTC-06:00). The shared working window is 9:00 AM–4:00 PM MST. 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
Denver
☀ 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 MST and Denver?
MST (MST, UTC-07:00) is 1 hour ahead of Denver (MDT, UTC-06:00). The gap is currently +1h.
How do I convert MST time to Denver time?
Add +1h to MST local time. For example, 9:00 AM in MST is 10:00 AM in Denver.
What time is it in Denver right now?
Denver uses MDT at UTC-06:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +1h offset from MST.
What is the best time to call Denver from MST?
Call between 9:00 AM and 4:00 PM MST — that maps to 10:00 AM–5:00 PM MDT and keeps both parties inside the working day.
Which is ahead, MST or Denver?
MST is 1 hour ahead of Denver. When it is 12:00 PM in MST it is 1:00 PM in Denver.
Do MST and Denver use different time zones?
MST uses MST at UTC-07:00, while Denver (USA) uses MDT at UTC-06:00. They actually share the same IANA zone.
Does daylight saving time affect the MST–Denver difference?
Yes at the moment: Denver is on daylight saving time and MST is not, so the +1h gap shifts by an hour when exactly one of them changes clocks.
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 Denver?
Not normally. The +1h gap only pushes the date over for late-evening times.
What is the time difference between MST and Denver?
Denver is +1h from MST.
What timezone is MST in?
MST operates on its local timezone.
What timezone is Denver in?
Denver operates on Mountain Time (MST/MDT), 2 hours behind New York. As a tech and aerospace hub, Denver bridges West Coast and Central US business hours.
What are the business hours in Denver?
Standard business hours in Denver are 8:00 AM - 5:00 PM MST.
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 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 MST, what time is it in Denver?
When it is 12:00 AM (midnight) in MST (MST), it is +1h later in Denver (MST).
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