Convert Pacific Standard Time to Mountain Standard Time (PST to MST)

Understanding PST and MST Time Zones

Pacific Standard Time (PST)

Pacific Standard Time is observed in undefined and uses the offset UTC-8. Major cities in this time zone include Los Angeles, San Francisco, Seattle, Portland. This time zone serves a significant global region with important economic and cultural hubs.

Mountain Standard Time (MST)

Mountain Standard Time operates at UTC-7, covering undefined. Key cities include Denver, Phoenix, Salt Lake City, Albuquerque. The 1-hour forward offset from PST means that when professionals in Los Angeles start their workday at 9:00 AM, it is already 10:00 AM in Denver.

PST is also commonly referred to as Pacific Time, PT, West Coast time, LA time, California time. MST is also known as Mountain Time, MT, Arizona time, Denver time. So if you are searching for Pacific Time to Mountain Time, this is the same conversion as PST to MST.

Complete PST to MST Conversion Table

The table below shows every two-hour increment converted from Pacific Standard Time to Mountain Standard Time. Business hours (9 AM – 5 PM) are highlighted for easy scheduling reference.

Times shown in 12-hour and 24-hour format. Last updated 2026-03-09.

Scheduling Between PST and MST

When coordinating deliverables across PST and MST, set deadlines in the earlier time zone to avoid end-of-day confusion. A "5 PM deadline" should specify which zone to prevent missed deliveries due to the 1-hour offset.

The small 1-hour gap between PST and MST means that most of the business day overlaps, making real-time collaboration straightforward. Morning meetings in PST align well with late morning schedules in MST.

Travel Between Los Angeles and Denver

Flight times between Los Angeles and Denver often appear misleading because of the time zone shift. A departure at 10:00 AM PST arriving at 12:00 PM MST may look long, but remember to factor in the 1-hour offset.

Medical experts recommend allowing approximately one day of adjustment per hour of time difference. For the 1-hour shift between PST and MST, plan for a quick adjustment of 1–2 days.

Daylight Saving Time Considerations

Countries near the equator — including Singapore, most of Africa, and parts of South America — do not observe DST, making their offsets constant year-round. This simplifies scheduling compared to US or European zones.

For the PST to MST conversion specifically: PST (UTC-8) and MST (UTC-7) both observe DST. When both zones transition on different dates, the offset temporarily shifts by one hour for a few weeks. Always verify during March–April and October–November.

Related Time Zone Conversions

References & Resources

• TimeAndDate.com — World Time Zones
• NIST — Official US Time Standard
• IANA Time Zone Database
• Wikipedia — Time Zone Abbreviations
• WorldTimeServer — Current Times Worldwide

Frequently Asked Questions