Australian Eastern Standard Time → Mountain Daylight Time
AEST = UTC+10MDT = UTC-6
AEST (Brisbane) ↔ MDT (Denver)
No overlap — one side will join outside working hours
AEST (Brisbane)
MDT (Denver)
00:00
08:00-1d
01:00
09:00-1dWorking
02:00
10:00-1dWorking
03:00
11:00-1dWorking
04:00
12:00-1dWorking
05:00
13:00-1dWorking
06:00
14:00-1dWorking
07:00
15:00-1dWorking
08:00
16:00-1dWorking
09:00Working
17:00-1doff
10:00Working
18:00-1doff
11:00Working
19:00-1doff
12:00Working
20:00-1doff
13:00Working
21:00-1doff
14:00Working
22:00-1doff
15:00Working
23:00-1doff
16:00Working
00:00off
17:00
01:00
18:00
02:00
19:00
03:00
20:00
04:00
21:00
05:00
22:00
06:00
23:00
07:00
Working hours: 09:00–17:00 local. Green = both working.Purple = one side only.
Frequently Asked Questions
What is the difference between aest and mdt?
Australian Eastern Standard Time (aest) is UTC+10 and Mountain Daylight Time (mdt) is UTC-6. The difference between them is 16 hours.
Where is aest used?
Australian Eastern Standard Time (aest) is used in Australia and surrounding regions. The IANA timezone identifier is Australia/Brisbane.
Where is mdt used?
Mountain Daylight Time (mdt) is used in USA and surrounding regions. The IANA timezone identifier is America/Denver.
How do I convert aest to mdt?
Use the interactive converter above. Drag the time slider to any aest time and the mdt equivalent updates instantly. You can also type a time like "3pm" or "15:00" in the input bar.
AEST (Brisbane) is 16 hours ahead of MDT (Denver). When AEST (Brisbane) clocks hit noon, MDT (Denver) reads 20:00.
AEST (Brisbane) runs on Australia/Brisbane; MDT (Denver) runs on America/Denver. Together they are 16 hours apart.
Shared working hours
There is no business hours overlap between AEST (Brisbane) and MDT (Denver) during standard working hours (9:00–17:00). Meetings would require one party to work outside normal hours.
Best times to schedule a meeting
AEST (Brisbane) and MDT (Denver) have no shared working window. These slots minimize out-of-hours disruption for both sides.
08:00 Brisbane / 16:00 Denver⚡ One side off-hours
⚠️ 1h before working hours in Brisbane
09:00 Brisbane / 17:00 Denver⚡ One side off-hours
⚠️ 1h after working hours in Denver
07:00 Brisbane / 15:00 Denver⚡ One side off-hours
⚠️ 2h before working hours in Brisbane
Working hours defined as 09:00–17:00 local time for each location.
Holiday calendar for both locations
⚡ Both locations have upcoming holidays, check availability before scheduling.
AEST (Brisbane)7 holidays
Aug 3Picnic Day
Sep 28King's Birthday
Oct 5Labour Day
Oct 5King's Birthday
Nov 3Melbourne Cup
MDT (Denver)7 holidays
Jul 3Independence DaySOON
Sep 7Labour Day
Oct 12Columbus Day
Oct 12Indigenous Peoples' Day
Nov 11Veterans Day
Working across AEST (Brisbane) and MDT (Denver)
A 16-hour difference separates AEST (Brisbane) (Australia) and MDT (Denver) (USA) — wide enough that standard business hours don't align at all. Scheduling requires deliberate compromise from both sides.
💡 Best practice for cross-timezone meetings
⚡
A 08:00 meeting in AEST (Brisbane) means 16:00 in MDT (Denver) (1h before working hours in Brisbane).
⚡
A 09:00 meeting in AEST (Brisbane) means 17:00 in MDT (Denver) (1h after working hours in Denver).
⚡
A 07:00 meeting in AEST (Brisbane) means 15:00 in MDT (Denver) (2h before working hours in Brisbane).
Since there is no natural overlap, the options above represent the most balanced compromise, minimizing out-of-hours inconvenience for both sides.
Avoid scheduling mistakes — especially around daylight saving changes. Use the ClockinSync Chrome Extension to instantly verify and compare both time zones directly in your browser, without manual calculations.
Need a specific time? Use the slider or type directly into the input bar — it understands "3pm", "15:30", and location-specific formats like "9am AEST (Brisbane)".
