Australia Time to MST Converter
MST is 18 hours behind AEDT. 9:00 AM AEDT = 3:00 PM MST (previous day).
MST is 18 hours behind AEDT at the moment. To convert Australia Time to MST, subtract 18 hours from the Australia Time time: 9:00 AM AEDT = 3:00 PM MST (previous day).
Australia Time (Australia time) is used in 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.
Australia Time to MST time conversion table
Australia Time to MST on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| Australia Time | MST | Day |
|---|---|---|
| 12:00 AM AEDT | 6:00 AM MST | previous day |
| 1:00 AM AEDT | 7:00 AM MST | previous day |
| 2:00 AM AEDT | 8:00 AM MST | previous day |
| 3:00 AM AEDT | 9:00 AM MST | previous day |
| 4:00 AM AEDT | 10:00 AM MST | previous day |
| 5:00 AM AEDT | 11:00 AM MST | previous day |
| 6:00 AM AEDT | 12:00 PM MST | previous day |
| 7:00 AM AEDT | 1:00 PM MST | previous day |
| 8:00 AM AEDT | 2:00 PM MST | previous day |
| 9:00 AM AEDT | 3:00 PM MST | work hours |
| 10:00 AM AEDT | 4:00 PM MST | work hours |
| 11:00 AM AEDT | 5:00 PM MST | previous day |
| 12:00 PM AEDT | 6:00 PM MST | previous day |
| 1:00 PM AEDT | 7:00 PM MST | previous day |
| 2:00 PM AEDT | 8:00 PM MST | previous day |
| 3:00 PM AEDT | 9:00 PM MST | previous day |
| 4:00 PM AEDT | 10:00 PM MST | previous day |
| 5:00 PM AEDT | 11:00 PM MST | previous day |
| 6:00 PM AEDT | 12:00 AM MST | night |
| 7:00 PM AEDT | 1:00 AM MST | night |
| 8:00 PM AEDT | 2:00 AM MST | night |
| 9:00 PM AEDT | 3:00 AM MST | night |
| 10:00 PM AEDT | 4:00 AM MST | night |
| 11:00 PM AEDT | 5:00 AM MST | night |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert Australia Time to MST
Subtract 18 hours from the Australia Time time to get MST.
Example: 9:00 AM AEDT = 3:00 PM MST (previous day).
Across midnight: 1:00 AM AEDT = 7:00 AM MST (previous day). The date changes, so always check the day as well as the hour.
Time difference between Australia Time and MST
The time difference between Australia 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 18 hours behind of Australia Time.
- 8 Mar 2026 – 4 Apr 2026: MST is 17 hours behind of Australia Time.
- 5 Apr 2026 – 3 Oct 2026: MST is 16 hours behind of Australia Time.
- 4 Oct 2026 – 31 Oct 2026: MST is 17 hours behind of Australia Time.
- 1 Nov 2026 – 31 Dec 2026: MST is 18 hours behind of Australia Time.
Australia Time and MST during daylight saving time
- Australia Time next changes on 4 Apr 2027: clocks go back one hour at 02:59 local time, from AEDT (UTC+11) to AEST (UTC+10).
- 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 Australia Time and MST
Australia Time and MST have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM AEDT, which is 1:00 PM MST.
Australia Time to MST FAQ
What is the time difference between Australia Time and MST?
Right now MST is 18 hours behind AEDT. The gap changes 5 times in 2026 because the two sides switch to daylight saving time on different dates.
What is 9 AM Australia Time in MST?
9:00 AM AEDT is 3:00 PM MST (previous day).
What is 12 PM (noon) Australia Time in MST?
12:00 PM AEDT is 6:00 PM MST (previous day).
Is MST ahead of or behind Australia Time?
MST is 18 hours behind AEDT, so it is earlier in MST than in Australia Time.
Does Australia Time change for daylight saving time?
Yes. Australia Time next changes on 4 Apr 2027, when clocks go back one hour from AEDT to AEST.
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 Australia Time and MST?
Australia Time and MST have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM AEDT, which is 1:00 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 Australia Time
Convert Australia Time to other time zones
Convert other time zones to MST
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.