Mountain Standard Time → Australian Eastern Daylight Time
MST = UTC-6AEDT = UTC+10
MST (Denver) ↔ AEDT (Sydney)
No overlap — one side will join outside working hours
MST (Denver)
AEDT (Sydney)
00:00
16:00Working
01:00
17:00
02:00
18:00
03:00
19:00
04:00
20:00
05:00
21:00
06:00
22:00
07:00
23:00
08:00
00:00+1d
09:00Working
01:00+1doff
10:00Working
02:00+1doff
11:00Working
03:00+1doff
12:00Working
04:00+1doff
13:00Working
05:00+1doff
14:00Working
06:00+1doff
15:00Working
07:00+1doff
16:00Working
08:00+1doff
17:00
09:00+1dWorking
18:00
10:00+1dWorking
19:00
11:00+1dWorking
20:00
12:00+1dWorking
21:00
13:00+1dWorking
22:00
14:00+1dWorking
23:00
15:00+1dWorking
Working hours: 09:00–17:00 local. Green = both working.Purple = one side only.
Frequently Asked Questions
What is the difference between mst and aedt?
Mountain Standard Time (mst) is UTC-6 and Australian Eastern Daylight Time (aedt) is UTC+10. The difference between them is 16 hours.
Where is mst used?
Mountain Standard Time (mst) is used in USA and surrounding regions. The IANA timezone identifier is America/Denver.
Where is aedt used?
Australian Eastern Daylight Time (aedt) is used in Australia and surrounding regions. The IANA timezone identifier is Australia/Sydney.
How do I convert mst to aedt?
Use the interactive converter above. Drag the time slider to any mst time and the aedt equivalent updates instantly. You can also type a time like "3pm" or "15:00" in the input bar.
MST (Denver) to AEDT (Sydney) — exact time difference
MST (Denver) is 16 hours behind AEDT (Sydney). When MST (Denver) clocks hit noon, AEDT (Sydney) reads 04:00.
MST (Denver) observes America/Denver and AEDT (Sydney) observes Australia/Sydney — a 16 hours gap between them.
Working hours overlap
When MST (Denver) is in standard working hours, AEDT (Sydney) is not — and vice versa. There is no mutual business window between these two locations.
Optimal meeting slots
No business hours overlap exists between MST (Denver) and AEDT (Sydney). Showing the most balanced options with minimal inconvenience for both locations.
16:00 Denver / 08:00 Sydney⚡ One side off-hours
⚠️ 1h before working hours in Sydney
17:00 Denver / 09:00 Sydney⚡ One side off-hours
⚠️ 1h after working hours in Denver
15:00 Denver / 07:00 Sydney⚡ One side off-hours
⚠️ 2h before working hours in Sydney
Assumes a standard 9 AM–5 PM workday in each location's local timezone.
Holiday calendar for both locations
⚡ Both locations have upcoming holidays, check availability before scheduling.
MST (Denver)8 holidays
Jun 19Juneteenth National Independence DaySOON
Jul 3Independence Day
Sep 7Labour Day
Oct 12Columbus Day
Oct 12Indigenous Peoples' Day
AEDT (Sydney)7 holidays
Aug 3Picnic Day
Sep 28King's Birthday
Oct 5Labour Day
Oct 5King's Birthday
Nov 3Melbourne Cup
Working across MST (Denver) and AEDT (Sydney)
Working across MST (Denver) (USA) and AEDT (Sydney) (Australia) is a challenge — the 16-hour difference means no shared business hours window under a standard schedule. Flexibility from at least one side is required.
💡 Best practice for cross-timezone meetings
⚡
16:00–17:00 in MST (Denver) corresponds to 08:00–09:00 in AEDT (Sydney) (1h before working hours in Sydney).
⚡
17:00–18:00 in MST (Denver) corresponds to 09:00–10:00 in AEDT (Sydney) (1h after working hours in Denver).
⚡
15:00–16:00 in MST (Denver) corresponds to 07:00–08:00 in AEDT (Sydney) (2h before working hours in Sydney).
Since there is no natural overlap, the options above represent the most balanced compromise, minimizing out-of-hours inconvenience for both sides.
Recurring meetings are particularly vulnerable to DST shifts. The ClockinSync Chrome Extension alerts you before the offset changes.
Drag the slider at the top to convert any MST (Denver) time instantly. You can also type natural language like "3pm", "15:00", or a location name to get an immediate answer.
