MST to Irvine Time Converter
PST is 1 hour behind MST. 9:00 AM MST = 8:00 AM PST.
PST is 1 hour behind MST. To convert MST to Irvine Time, subtract 1 hour from the MST time: 9:00 AM MST = 8:00 AM PST.
MST (Mountain Time) is used in Denver, Salt Lake City, Albuquerque, Calgary, Edmonton; Phoenix (Arizona) all year. Irvine Time (Irvine time) is used in Irvine, USA.
Most of Arizona uses MST all year and does not switch to MDT.
MST to Irvine Time time conversion table
MST to Irvine Time on 6 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| MST | Irvine Time | Day |
|---|---|---|
| 12:00 AM MST | 11:00 PM PST | previous day |
| 1:00 AM MST | 12:00 AM PST | night |
| 2:00 AM MST | 1:00 AM PST | night |
| 3:00 AM MST | 2:00 AM PST | night |
| 4:00 AM MST | 3:00 AM PST | night |
| 5:00 AM MST | 4:00 AM PST | night |
| 6:00 AM MST | 5:00 AM PST | night |
| 7:00 AM MST | 6:00 AM PST | — |
| 8:00 AM MST | 7:00 AM PST | — |
| 9:00 AM MST | 8:00 AM PST | — |
| 10:00 AM MST | 9:00 AM PST | work hours |
| 11:00 AM MST | 10:00 AM PST | work hours |
| 12:00 PM MST | 11:00 AM PST | work hours |
| 1:00 PM MST | 12:00 PM PST | work hours |
| 2:00 PM MST | 1:00 PM PST | work hours |
| 3:00 PM MST | 2:00 PM PST | work hours |
| 4:00 PM MST | 3:00 PM PST | work hours |
| 5:00 PM MST | 4:00 PM PST | — |
| 6:00 PM MST | 5:00 PM PST | — |
| 7:00 PM MST | 6:00 PM PST | — |
| 8:00 PM MST | 7:00 PM PST | — |
| 9:00 PM MST | 8:00 PM PST | — |
| 10:00 PM MST | 9:00 PM PST | — |
| 11:00 PM MST | 10:00 PM PST | night |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert MST to Irvine Time
Subtract 1 hour from the MST time to get Irvine Time.
Example: 9:00 AM MST = 8:00 AM PST.
Across midnight: 12:00 AM MST = 11:00 PM PST (previous day). The date changes, so always check the day as well as the hour.
Time difference between MST and Irvine Time
The time difference between MST and Irvine Time is 1 hour all year – PST is behind MST.
MST and Irvine Time during daylight saving time
- MST next changes on 14 Mar 2027: clocks go forward one hour at 01:59 local time, from MST (UTC−7) to MDT (UTC−6).
- Irvine Time next changes on 14 Mar 2027: clocks go forward one hour at 01:59 local time, from PST (UTC−8) to PDT (UTC−7).
Best time for a meeting between MST and Irvine Time
MST and Irvine Time share 7 hours of the 9 AM–5 PM working day. Any time between 10:00 AM and 5:00 PM MST lands between 9:00 AM and 4:00 PM PST, inside working hours for both.
MST to Irvine Time FAQ
What is the time difference between MST and Irvine Time?
PST is 1 hour behind MST all year. 9:00 AM MST = 8:00 AM PST.
What is 9 AM MST in Irvine Time?
9:00 AM MST is 8:00 AM PST.
What is 12 PM (noon) MST in Irvine Time?
12:00 PM MST is 11:00 AM PST.
Is Irvine Time ahead of or behind MST?
PST is 1 hour behind MST, so it is earlier in Irvine Time than in MST.
Does MST change for daylight saving time?
Yes. MST next changes on 14 Mar 2027, when clocks go forward one hour from MST to MDT.
Does Irvine Time change for daylight saving time?
Yes. Irvine Time next changes on 14 Mar 2027, when clocks go forward one hour from PST to PDT.
What is the best time for a meeting between MST and Irvine Time?
MST and Irvine Time share 7 hours of the 9 AM–5 PM working day. Any time between 10:00 AM and 5:00 PM MST lands between 9:00 AM and 4:00 PM PST, inside working hours for both.
Is MT the same as MST?
MST is the winter (standard) name of Mountain Time (MT). From March to November the same clocks are called MDT. This converter always uses the one in force on the date you choose.
Related conversions
Convert Irvine Time to MST
Convert MST to other time zones
Convert other time zones to Irvine Time
Learn more
Updated 6 November 2026. Time zone data: IANA tz database.