PST to MST Converter & Meeting Planner
Quick answer: 9:00 AM PST = 10:00 AM MST (fixed -08:00 standard offset — not DST-adjusted). Use the interactive converter below for DST-aware local-time scheduling.
Planning a call or meeting between Pacific Standard Time (PST) and Mountain Standard Time (MST)? You need to account for the standard time difference. Mountain Standard Time is normally 1 hours ahead of Pacific Standard Time. Whether you are coordinating between teams in Los Angeles and San Francisco and Denver and Phoenix, our live tool has you covered. Use our interactive overlap studio below to find the perfect waking hours for both regions, taking into account any seasonal Daylight Saving Time (DST) changes.
24-Hour Conversion Table
Quick reference: 12:00 AM PST = 1:00 AM MST. The full 24-hour PST to MST table below uses fixed standard offsets for exact abbreviation searches.
Example: 3:00 PM PST = 4:00 PM MST.
| PST Time | MST Time |
|---|---|
| 12:00 AM (00:00) | 1:00 AM (01:00) |
| 1:00 AM (01:00) | 2:00 AM (02:00) |
| 2:00 AM (02:00) | 3:00 AM (03:00) |
| 3:00 AM (03:00) | 4:00 AM (04:00) |
| 4:00 AM (04:00) | 5:00 AM (05:00) |
| 5:00 AM (05:00) | 6:00 AM (06:00) |
| 6:00 AM (06:00) | 7:00 AM (07:00) |
| 7:00 AM (07:00) | 8:00 AM (08:00) |
| 8:00 AM (08:00) | 9:00 AM (09:00) |
| 9:00 AM (09:00) | 10:00 AM (10:00) |
| 10:00 AM (10:00) | 11:00 AM (11:00) |
| 11:00 AM (11:00) | 12:00 PM (12:00) |
| 12:00 PM (12:00) | 1:00 PM (13:00) |
| 1:00 PM (13:00) | 2:00 PM (14:00) |
| 2:00 PM (14:00) | 3:00 PM (15:00) |
| 3:00 PM (15:00) | 4:00 PM (16:00) |
| 4:00 PM (16:00) | 5:00 PM (17:00) |
| 5:00 PM (17:00) | 6:00 PM (18:00) |
| 6:00 PM (18:00) | 7:00 PM (19:00) |
| 7:00 PM (19:00) | 8:00 PM (20:00) |
| 8:00 PM (20:00) | 9:00 PM (21:00) |
| 9:00 PM (21:00) | 10:00 PM (22:00) |
| 10:00 PM (22:00) | 11:00 PM (23:00) |
| 11:00 PM (23:00) | 12:00 AM (00:00)+1 day |
Best time to call Denver from Los Angeles
For most work calls, compare the normal business day in Los Angeles (PST) with the business day in Denver (MST). PST commonly covers North America, while MST is mainly associated with North America.
⚠️ Note: 2026-07-05 is not a normal workday in one or both regions based on their configured calendar. The overlap below should be treated as a reference, not a guaranteed office-hours window.
✅ The most practical overlap on 2026-07-05 is usually 9:00 AM - 4:00 PM PST, which corresponds to 10:00 AM - 5:00 PM MST. This window sits inside the typical PST workday (9:00 AM - 5:00 PM) and the MST workday (9:00 AM - 5:00 PM).
- DST Safety: PST or MST may shift during Daylight Saving Time. Always confirm the converted time for your specific date.
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Frequently Asked Questions
What is the time difference between PST and MST?
During standard time, Mountain Standard Time is 1 hours ahead of Pacific Standard Time.
What is the difference between PST and PDT?
PST (Pacific Standard Time) is the winter offset at UTC-8, observed from the first Sunday in November through the second Sunday in March. PDT (Pacific Daylight Time) is the summer offset at UTC-7, active when Daylight Saving Time shifts clocks forward by one hour.
Which major cities observe Pacific Standard Time?
Major cities that observe Pacific Standard Time include Los Angeles, San Francisco, Seattle, Las Vegas, Vancouver, and Tijuana.
Does Arizona observe Daylight Saving Time?
Most of Arizona — including Phoenix, Tucson, and the state government — does not observe Daylight Saving Time, remaining on MST (UTC-7) year-round under a state law in effect since 1968. The significant exception is the Navajo Nation, which spans parts of northeastern Arizona, Utah, and New Mexico and does observe DST, creating one of the most complex intrastate time zone situations in the United States.
What is the difference between MST and MDT?
MST (Mountain Standard Time) is the winter offset at UTC-7:00, observed from the first Sunday in November through the second Sunday in March. MDT (Mountain Daylight Time) is the summer offset at UTC-6:00, applied when most Mountain Time regions advance their clocks by one hour during Daylight Saving Time.