Offset
The time difference between Australian Western Time and Mountain Time is 14 hours.
Australian Western Time (AWST) is ahead of Mountain Time (MDT).
AWST: UTC+8
MDT: UTC-6
Mountain Time is currently observing daylight saving time; Australian Western Time is not.
When to schedule
Standard business hours (9 AM–5 PM, Mon–Fri) in Australian Western Time and Mountain Time don't overlap on the same weekday. Mountain Time is 14 hours behind Australian Western Time.
Realistic options: hand off asynchronously, or stretch one side by an hour to catch the other team at the start or end of their day.
This window may shift by an hour during daylight saving time.
Public holidays in 2026
National public holidays can affect availability — a counterpart is likely off work on their own holidays, so it's worth planning meetings and deadlines around them.
Australia
- New Year's DayThu, Jan 1
- Australia DayMon, Jan 26
- Good FridayFri, Apr 3
- Easter MondayMon, Apr 6
- Christmas DayFri, Dec 25
- St. Stephen's DayMon, Dec 28
United States
- New Year's DayThu, Jan 1
- Martin Luther King, Jr. DayMon, Jan 19
- Presidents DayMon, Feb 16
- Memorial DayMon, May 25
- Juneteenth National Independence DayFri, Jun 19
- Independence DayFri, Jul 3
- Labour DayMon, Sep 7
- Columbus DayMon, Oct 12
- Veterans DayWed, Nov 11
- Thanksgiving DayThu, Nov 26
- Christmas DayFri, Dec 25
About these zones
Australian Western Time is also known as AWST. To call Australia, dial +61.
Mountain Time is also known as MST, or MDT. To call United States, dial +1.
Mountain Time is approximately 10,100 miles northeast of Australian Western Time.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| AWST | MST | Day |
|---|---|---|
| 12:00 am | 10:00 am | -1 day |
| 1:00 am | 11:00 am | -1 day |
| 2:00 am | 12:00 pm | -1 day |
| 3:00 am | 1:00 pm | -1 day |
| 4:00 am | 2:00 pm | -1 day |
| 5:00 am | 3:00 pm | -1 day |
| 6:00 am | 4:00 pm | -1 day |
| 7:00 am | 5:00 pm | -1 day |
| 8:00 am | 6:00 pm | -1 day |
| 9:00 am | 7:00 pm | -1 day |
| 10:00 am | 8:00 pm | -1 day |
| 11:00 am | 9:00 pm | -1 day |
| 12:00 pm | 10:00 pm | -1 day |
| 1:00 pm | 11:00 pm | -1 day |
| 2:00 pm | 12:00 am | Same day |
| 3:00 pm | 1:00 am | Same day |
| 4:00 pm | 2:00 am | Same day |
| 5:00 pm | 3:00 am | Same day |
| 6:00 pm | 4:00 am | Same day |
| 7:00 pm | 5:00 am | Same day |
| 8:00 pm | 6:00 am | Same day |
| 9:00 pm | 7:00 am | Same day |
| 10:00 pm | 8:00 am | Same day |
| 11:00 pm | 9:00 am | Same day |
Daylight saving time
Mountain Time observes daylight saving time; Australian Western Time does not. The offset between the two zones changes when Mountain Time transitions: on Sunday, November 1, 2026, clocks fall back from MDT to MST.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 7:11 AM
- Sunset
- 5:20 PM
- Day length
- 10h 9m
- Sunrise
- 5:34 AM
- Sunset
- 8:25 PM
- Day length
- 14h 51m
Daylight overlap: 3h 13m — 7:11 AM–10:25 AM in Australian Western Time (5:11 PM–8:25 PM in Mountain Time). Both locations are in daylight during this window.
Cities in these zones
Cities in Australian Western Time
Cities in Mountain Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Australian Western Time
- PER
Airports in Mountain Time
- BJC
- DEN
- OGD
- SLC
Related conversions
Common conversions
- What is 9:00 am AWST in MST?
- 9:00 am AWST is 7:00 pm MST, the previous day.
- What is 12:00 pm AWST in MST?
- 12:00 pm AWST is 10:00 pm MST, the previous day.
- What is 12:30 pm AWST in MST?
- 12:30 pm AWST is 10:30 pm MST, the previous day.
- What is 2:00 pm AWST in MST?
- 2:00 pm AWST is 12:00 am MST.
- What is 5:00 pm AWST in MST?
- 5:00 pm AWST is 3:00 am MST.
- What is 11:30 pm AWST in MST?
- 11:30 pm AWST is 9:30 am MST.