Perth Time to MST Converter
MST is 15 hours behind AWST. 9:00 AM AWST = 6:00 PM MST (previous day).
MST is 15 hours behind AWST at the moment. To convert Perth Time to MST, subtract 15 hours from the Perth Time time: 9:00 AM AWST = 6:00 PM MST (previous day).
Perth Time (Perth time) is used in Perth, Australia. MST (Mountain Time) is used in Denver, Salt Lake City, Albuquerque, Calgary, Edmonton; Phoenix (Arizona) all year.
Most of Arizona uses MST all year and does not switch to MDT.
Perth Time to MST time conversion table
Perth Time to MST on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| Perth Time | MST |
|---|---|
| 12:00 AM | 9:00 AM−1 |
| 1:00 AM | 10:00 AM−1 |
| 2:00 AM | 11:00 AM−1 |
| 3:00 AM | 12:00 PM−1 |
| 4:00 AM | 1:00 PM−1 |
| 5:00 AM | 2:00 PM−1 |
| 6:00 AM | 3:00 PM−1 |
| 7:00 AM | 4:00 PM−1 |
| Perth Time | MST |
|---|---|
| 8:00 AM | 5:00 PM−1 |
| 9:00 AM | 6:00 PM−1 |
| 10:00 AM | 7:00 PM−1 |
| 11:00 AM | 8:00 PM−1 |
| 12:00 PM | 9:00 PM−1 |
| 1:00 PM | 10:00 PM−1 |
| 2:00 PM | 11:00 PM−1 |
| 3:00 PM | 12:00 AM |
| Perth Time | MST |
|---|---|
| 4:00 PM | 1:00 AM |
| 5:00 PM | 2:00 AM |
| 6:00 PM | 3:00 AM |
| 7:00 PM | 4:00 AM |
| 8:00 PM | 5:00 AM |
| 9:00 PM | 6:00 AM |
| 10:00 PM | 7:00 AM |
| 11:00 PM | 8:00 AM |
Conversion table from Perth Time to MST 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 MST, −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 Perth Time to MST
Subtract 15 hours from the Perth Time time to get MST.
Example: 9:00 AM AWST = 6:00 PM MST (previous day).
Across midnight: 1:00 AM AWST = 10:00 AM MST (previous day). The date changes, so always check the day as well as the hour.
Time difference between Perth Time and MST
The time difference between Perth Time and MST 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:
- 1 Jan 2026 – 7 Mar 2026: MST is 15 hours behind of Perth Time.
- 8 Mar 2026 – 31 Oct 2026: MST is 14 hours behind of Perth Time.
- 1 Nov 2026 – 31 Dec 2026: MST is 15 hours behind of Perth Time.
Perth Time and MST during daylight saving time
- Perth Time does not observe daylight saving time; it stays on UTC+8 all year.
- 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).
Best time for a meeting between Perth Time and MST
Perth Time and MST have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM AWST, which is 4:00 PM MST.
Perth Time to MST FAQ
What is the time difference between Perth Time and MST?
Right now MST is 15 hours behind AWST. The gap changes 3 times in 2026 because the two sides switch to daylight saving time on different dates.
What is 9 AM Perth Time in MST?
9:00 AM AWST is 6:00 PM MST (previous day).
What is 12 PM (noon) Perth Time in MST?
12:00 PM AWST is 9:00 PM MST (previous day).
Is MST ahead of or behind Perth Time?
MST is 15 hours behind AWST, so it is earlier in MST than in Perth Time.
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.
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.
What is the best time for a meeting between Perth Time and MST?
Perth Time and MST have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM AWST, which is 4:00 PM MST.
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 MST to Perth Time
Convert Perth Time to other time zones
Convert other time zones to MST
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.