The short answer
9pm in Australian Eastern Standard Time is 5am in Mountain Time.
Australian Eastern Standard Time is 16 hours ahead of Mountain Time. It lands deep outside working hours in Mountain Time — see the best time to meet below for a friendlier slot.
Australian Eastern Standard Time☾
9pm
Mountain Time☾
5am
Right now
7:19pmAEST · UTC+10:00 · Mon, Jun 22
3:19amMDT · UTC-06:00 · Mon, Jun 22
Read across to convert
Australian Eastern Standard Time
AEST · UTC+10:00
Mountain Time
MDT · UTC-06:00
Pinned9pmAustralian Eastern Standard Time=5amMountain Time
12amMon
8amSun ·−1d
1am
9amSun ·−1d
WORK2am
10amSun ·−1d
WORK3am
11amSun ·−1d
WORK4am
12pmSun ·−1d
WORK5am
1pmSun ·−1d
WORK6am
2pmSun ·−1d
WORK7am
3pmSun ·−1d
WORK8am
4pmSun ·−1d
WORK9am
WORK5pmSun ·−1d
10am
WORK6pmSun ·−1d
11am
WORK7pmSun ·−1d
12pm
WORK8pmSun ·−1d
1pm
WORK9pmSun ·−1d
2pm
WORK10pmSun ·−1d
3pm
WORK11pmSun ·−1d
4pm
WORK12amMon
5pm
1am
6pm
2am
NOW
7pm
3am
8pm
4am
PINNED
9pm
5am
10pm
6am
11pm
7am
daylightnightworking hoursoverlap
Best time to meet=
Closest workable window
Just outside the working window — early on one side, late on the other.
Australian Eastern Standard Time
7am–11am
Mountain Time
3pm–7pm
previous day
Popular conversions
Quick reference.
9amAustralian Eastern Standard Time=5pmMountain Time · prev day
12pmAustralian Eastern Standard Time=8pmMountain Time · prev day
3pmAustralian Eastern Standard Time=11pmMountain Time · prev day
5pmAustralian Eastern Standard Time=1amMountain Time
9pmAustralian Eastern Standard Time=5amMountain Time
In context
What each side covers.
Australian Eastern Standard Time
7:19pmAEST · UTC+10:00
Mountain Time
3:19amMDT · UTC-06:00
Cities on this clock
Related converters
Other popular pairs.
Pacific Time
2:19am
India Standard Time
2:49pm
Pacific Time to India12 hours 30 minutes behind
Eastern Standard Time
5:19am
Central European Time
11:19am
Eastern Time to Central Europe6 hours behind
India Standard Time
2:49pm
Eastern Standard Time
5:19am
India to Eastern Time9 hours 30 minutes ahead
Greenwich Mean Time
10:19am
India Standard Time
2:49pm
London to India4 hours 30 minutes behind
Pacific Standard Time
2:19am
Eastern Standard Time
5:19am
Pacific to Eastern Time3 hours behind
Central European Time
11:19am
India Standard Time
2:49pm
Central Europe to India3 hours 30 minutes behind
Frequently asked
Quick answers about converting between Australian Eastern Standard Time and Mountain Time. Can't find what you need? Email [email protected].
- What is the time difference between Australian Eastern Standard Time and Mountain Time?
- Australian Eastern Standard Time is 16 hours ahead of Mountain Time right now. We always show the live, daylight-saving-correct difference, so this figure already accounts for whichever side is observing summer time today.
- When it's 9pm in Australian Eastern Standard Time, what time is it in Mountain Time?
- 9pm in Australian Eastern Standard Time is 5am in Mountain Time. It lands deep outside working hours in Mountain Time — see the best time to meet below for a friendlier slot. Use the hour-by-hour table above to read any other time across.
- What's the best time for a call between Australian Eastern Standard Time and Mountain Time?
- There's no comfortable 9-to-5 overlap between Australian Eastern Standard Time and Mountain Time — they sit on opposite sides of the planet's working day. Plan for an early or late call on one side, or hand work off asynchronously.
- Does this account for daylight saving time?
- Yes. We track every clock change in both places, so the abbreviations you see — AEST and MDT — are the ones actually in effect right now, not a fixed all-year value. When either side changes its clocks, this page updates automatically.
- Why is the date sometimes different on each side?
- When two places are far enough apart, the same moment can fall on different calendar days. That is why some conversions are marked "previous day" or "next day" — it is the same instant in time, read off two clocks that crossed midnight at different points.