MST to Perth Time Converter
AWST is 15 hours ahead of MST. 9:00 AM MST = 12:00 AM AWST (next day).
AWST is 15 hours ahead of MST at the moment. To convert MST to Perth Time, add 15 hours to the MST time: 9:00 AM MST = 12:00 AM AWST (next day).
MST (Mountain Time) is used in Denver, Salt Lake City, Albuquerque, Calgary, Edmonton; Phoenix (Arizona) all year. Perth Time (Perth time) is used in Perth, Australia.
Most of Arizona uses MST all year and does not switch to MDT.
MST to Perth Time time conversion table
MST to Perth Time on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| MST | Perth Time |
|---|---|
| 12:00 AM | 3:00 PM |
| 1:00 AM | 4:00 PM |
| 2:00 AM | 5:00 PM |
| 3:00 AM | 6:00 PM |
| 4:00 AM | 7:00 PM |
| 5:00 AM | 8:00 PM |
| 6:00 AM | 9:00 PM |
| 7:00 AM | 10:00 PM |
| MST | Perth Time |
|---|---|
| 8:00 AM | 11:00 PM |
| 9:00 AM | 12:00 AM+1 |
| 10:00 AM | 1:00 AM+1 |
| 11:00 AM | 2:00 AM+1 |
| 12:00 PM | 3:00 AM+1 |
| 1:00 PM | 4:00 AM+1 |
| 2:00 PM | 5:00 AM+1 |
| 3:00 PM | 6:00 AM+1 |
| MST | Perth Time |
|---|---|
| 4:00 PM | 7:00 AM+1 |
| 5:00 PM | 8:00 AM+1 |
| 6:00 PM | 9:00 AM+1 |
| 7:00 PM | 10:00 AM+1 |
| 8:00 PM | 11:00 AM+1 |
| 9:00 PM | 12:00 PM+1 |
| 10:00 PM | 1:00 PM+1 |
| 11:00 PM | 2:00 PM+1 |
Conversion table from MST to Perth Time for 7 Nov 2026. A tick marks hours that fall between 9 AM and 5 PM in both places. +1 means the next day in Perth Time, −1 the previous day.
- ✓ marks 9 AM–5 PM in both places
- Greyed times are night in the destination (10 PM–6 AM)
How to convert MST to Perth Time
Add 15 hours to the MST time to get Perth Time.
Example: 9:00 AM MST = 12:00 AM AWST (next day).
Across midnight: 10:00 PM MST = 1:00 PM AWST (next day). The date changes, so always check the day as well as the hour.
Time difference between MST and Perth Time
The time difference between MST and Perth Time is not the same all year, because the two sides change for daylight saving time on different dates. In 2026 it works out like this:
- 31 Dec 2025 – 7 Mar 2026: Perth Time is 15 hours ahead of MST.
- 8 Mar 2026 – 31 Oct 2026: Perth Time is 14 hours ahead of MST.
- 1 Nov 2026 – 30 Dec 2026: Perth Time is 15 hours ahead of MST.
MST and Perth 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).
- Perth Time does not observe daylight saving time; it stays on UTC+8 all year.
Best time for a meeting between MST and Perth Time
MST and Perth Time have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM MST, which is 10:00 PM AWST.
MST to Perth Time FAQ
What is the time difference between MST and Perth Time?
Right now AWST is 15 hours ahead of MST. The gap changes 3 times in 2026 because the two sides switch to daylight saving time on different dates.
What is 9 AM MST in Perth Time?
9:00 AM MST is 12:00 AM AWST (next day).
What is 12 PM (noon) MST in Perth Time?
12:00 PM MST is 3:00 AM AWST (next day).
Is Perth Time ahead of or behind MST?
AWST is 15 hours ahead of MST, so it is later in Perth 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 Perth Time change for daylight saving time?
No. Perth Time stays on the same offset all year, so conversions never shift for daylight saving time.
What is the best time for a meeting between MST and Perth Time?
MST and Perth Time have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM MST, which is 10:00 PM AWST.
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 Perth Time to MST
Convert MST to other time zones
Convert other time zones to Perth Time
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.