PDT to MST
+0hPDT
PDTSOURCEMST
MSTGreen rows indicate typical business hours (9 AM - 5 PM)
PDT and MST on the World Map
The map below highlights the PDT (Pacific Daylight Time) and MST (Mountain Standard Time) timezone regions across the globe.
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 – 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 +0h Gap: PDT vs MST
PDT runs on Pacific Daylight Time (PDT) at UTC-07:00. MST runs on Mountain Standard Time (MST) at UTC-07:00. That puts PDT no time difference MST — a difference of +0h at the current offsets.
In practice, when it is 9:00 AM in PDT it is 9:00 AM in MST. Midnight in PDT is 12:00 AM in MST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
PDT to MST time conversion table
| PDT (PDT) | MST (MST) | 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 PDT to MST time
- Scheduling a call from PDT to MST: a 10:00 AM start in PDT lands at 10:00 AM in MST, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both PDT and MST are inside the 9-to-5 working day between 9:00 AM and 5:00 PM PDT time (9:00 AM–5:00 PM MST). That is roughly 8 hours of usable overlap.
- Keeping family and friends in sync: knowing that 8:00 PM in PDT is 8:00 PM in MST makes it easy to avoid calling at 3 AM.
- Always state the zone abbreviation, not just the hour. "3:00 PM PDT" is unambiguous; "3 PM" across a +0h gap is not.
- Block 9:00 AM–5:00 PM PDT as the recurring meeting window if you work primarily from PDT and need MST colleagues present.
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.
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 PDT and MST
Both PDT and MST sit inside the 9 AM – 5 PM working day between 9:00 AM–5:00 PM PDT, which is 9:00 AM–5:00 PM MST. That gives roughly 8 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
PDT and MST share 8 hours of working-hours overlap (9:00 AM–5:00 PM PDT), so scheduling a live meeting is straightforward.
PDT is no time difference MST (PDT UTC-07:00 → MST UTC-07:00). The shared working window is 9:00 AM–5:00 PM PDT. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
PDT
☀ Currently in DST
Standard: UTC-08:00 · DST: UTC-07:00
Clocks fall back on Sun, Nov 1, 2026
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 PDT and MST?
PDT (PDT, UTC-07:00) is no time difference MST (MST, UTC-07:00). The gap is currently +0h.
How do I convert PDT time to MST time?
Add +0h to PDT local time. For example, 9:00 AM in PDT is 9:00 AM in MST.
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 +0h offset from PDT.
What is the best time to call MST from PDT?
Call between 9:00 AM and 5:00 PM PDT — that maps to 9:00 AM–5:00 PM MST and keeps both parties inside the working day.
Which is ahead, PDT or MST?
PDT and MST are currently on the same clock.
Does daylight saving time affect the PDT–MST difference?
Neither zone observes daylight saving time, so the +0h offset between PDT and MST is fixed all year.
Which other cities share PDT's time zone?
PDT also covers Los Angeles, San Francisco, Seattle, Vancouver, Portland.
Which countries use PDT, PDT's zone?
PDT is used in United States (Pacific), Canada (British Columbia), Mexico (Baja California).
What is the time difference between PDT and MST?
MST is +0h from PDT.
What timezone is PDT in?
PDT operates on its local timezone.
What timezone is MST in?
MST operates on its local timezone.
Which countries use PDT (Pacific Daylight Time)?
PDT is used in United States (Pacific), Canada (British Columbia), Mexico (Baja California).
Does PDT observe daylight saving time?
Yes, PDT switches to PST during summer months.
What are some interesting facts about PDT?
PDT aligns with MST at UTC-07:00. Tech company earnings calls often reference PDT/PST times.
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 PDT, what time is it in MST?
When it is 12:00 AM (midnight) in PDT (PDT), it is +0h later in MST (MST).
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See every conversion from PDT →·See every conversion from MST →