MST to PDT
+0hMST
MSTSOURCEPDT
PDTGreen rows indicate typical business hours (9 AM - 5 PM)
MST and PDT on the World Map
The map below highlights the MST (Mountain Standard Time) and PDT (Pacific Daylight 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.
PDT – Pacific Daylight Time
UTC-07:00Pacific Daylight Time (PDT) is the daylight saving offset on the US/Canada Pacific coast, 7 hours behind UTC.
- •PDT aligns with MST at UTC-07:00.
- •Tech company earnings calls often reference PDT/PST times.
MST vs PDT: Offsets, DST and Best Call Times
MST runs on Mountain Standard Time (MST) at UTC-07:00. PDT runs on Pacific Daylight Time (PDT) at UTC-07:00. That puts MST no time difference PDT — a difference of +0h at the current offsets.
In practice, when it is 9:00 AM in MST it is 9:00 AM in PDT. Midnight in MST is 12:00 AM in PDT. Neither zone observes daylight saving time, so the offset between them stays constant all year.
MST to PDT time conversion table
| MST (MST) | PDT (PDT) | Day |
|---|---|---|
| 12:00 AM | 12:00 AM | same day |
| 6:00 AM | 6:00 AM | same day |
| 7:00 AM | 7:00 AM | same day |
| 8:00 AM | 8:00 AM | same day |
| 9:00 AM | 9:00 AM | same day |
| 12:00 PM | 12:00 PM | same day |
| 3:00 PM | 3:00 PM | same day |
| 5:00 PM | 5:00 PM | same day |
| 6:00 PM | 6:00 PM | same day |
| 9:00 PM | 9:00 PM | same day |
Why people convert MST to PDT time
- Scheduling a call from MST to PDT: a 10:00 AM start in MST lands at 10:00 AM in PDT, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both MST and PDT are inside the 9-to-5 working day between 9:00 AM and 5:00 PM MST time (9:00 AM–5:00 PM PDT). That is roughly 8 hours of usable overlap.
- Keeping family and friends in sync: knowing that 8:00 PM in MST is 8:00 PM in PDT makes it easy to avoid calling at 3 AM.
- Always state the zone abbreviation, not just the hour. "3:00 PM MST" is unambiguous; "3 PM" across a +0h gap is not.
- Block 9:00 AM–5:00 PM MST as the recurring meeting window if you work primarily from MST and need PDT colleagues present.
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 PDT (Pacific Daylight Time)
Pacific Daylight Time (PDT) is observed from March to November on the Pacific coast. During PDT, the west coast is 7 hours behind UTC and only 2 hours behind the east coast's EDT.
Best time to call between MST and PDT
Both MST and PDT sit inside the 9 AM – 5 PM working day between 9:00 AM–5:00 PM MST, which is 9:00 AM–5:00 PM PDT. That gives roughly 8 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
MST and PDT share 8 hours of working-hours overlap (9:00 AM–5:00 PM MST), so scheduling a live meeting is straightforward.
MST is no time difference PDT (MST UTC-07:00 → PDT UTC-07:00). The shared working window is 9:00 AM–5:00 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
PDT
☀ Currently in DST
Standard: UTC-08:00 · DST: UTC-07:00
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 PDT?
MST (MST, UTC-07:00) is no time difference PDT (PDT, UTC-07:00). The gap is currently +0h.
How do I convert MST time to PDT time?
Add +0h to MST local time. For example, 9:00 AM in MST is 9:00 AM in PDT.
What time is it in PDT right now?
PDT uses PDT at UTC-07:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +0h offset from MST.
What is the best time to call PDT from MST?
Call between 9:00 AM and 5:00 PM MST — that maps to 9:00 AM–5:00 PM PDT and keeps both parties inside the working day.
Which is ahead, MST or PDT?
MST and PDT are currently on the same clock.
Does daylight saving time affect the MST–PDT difference?
Neither zone observes daylight saving time, so the +0h offset between MST and PDT 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).
What is the time difference between MST and PDT?
PDT is +0h from MST.
What timezone is MST in?
MST operates on its local timezone.
What timezone is PDT in?
PDT 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 PDT timezone?
Major cities in the PDT timezone include Los Angeles, San Francisco, Seattle, Vancouver, Portland.
What is the UTC offset for PDT?
Pacific Daylight Time (PDT) is at UTC-07:00. During daylight saving time, it shifts to PST.
What should I know about the PDT timezone?
PDT aligns with MST at UTC-07:00. Tech company earnings calls often reference PDT/PST times.
When is it midnight in MST, what time is it in PDT?
When it is 12:00 AM (midnight) in MST (MST), it is +0h later in PDT (PDT).
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See every conversion from MST →·See every conversion from PDT →