Mountain Daylight Time → Australian Eastern Daylight Time
MDT = UTC-6AEDT = UTC+10
MDT (Denver) ↔ AEDT (Sydney)
No overlap — one side will join outside working hours
MDT (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 mdt and aedt?
Mountain Daylight Time (mdt) is UTC-6 and Australian Eastern Daylight Time (aedt) is UTC+10. The difference between them is 16 hours.
Where is mdt used?
Mountain Daylight Time (mdt) 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 mdt to aedt?
Use the interactive converter above. Drag the time slider to any mdt time and the aedt equivalent updates instantly. You can also type a time like "3pm" or "15:00" in the input bar.
MDT (Denver) is 16 hours behind AEDT (Sydney). At noon in MDT (Denver), your contact in AEDT (Sydney) sees 04:00.
MDT (Denver) observes America/Denver and AEDT (Sydney) observes Australia/Sydney — a 16 hours gap between them.
Shared working hours
When MDT (Denver) is in standard working hours, AEDT (Sydney) is not — and vice versa. There is no mutual business window between these two locations.
Meeting time recommendations
No business hours overlap exists between MDT (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.
Public holidays for both locations
⚡ Holiday alerts for both locations, double-check schedules before confirming.
MDT (Denver)7 holidays
Jul 3Independence DaySOON
Sep 7Labour Day
Oct 12Columbus Day
Oct 12Indigenous Peoples' Day
Nov 11Veterans Day
AEDT (Sydney)7 holidays
Aug 3Picnic Day
Sep 28King's Birthday
Oct 5Labour Day
Oct 5King's Birthday
Nov 3Melbourne Cup
Scheduling between MDT (Denver) and AEDT (Sydney)
A 16-hour difference separates MDT (Denver) (USA) and AEDT (Sydney) (Australia) — wide enough that standard business hours don't align at all. Scheduling requires deliberate compromise from both sides.
💡 Scheduling tips for these locations
⚡
16:00–17:00 in MDT (Denver) corresponds to 08:00–09:00 in AEDT (Sydney) (1h before working hours in Sydney).
⚡
17:00–18:00 in MDT (Denver) corresponds to 09:00–10:00 in AEDT (Sydney) (1h after working hours in Denver).
⚡
15:00–16:00 in MDT (Denver) corresponds to 07:00–08:00 in AEDT (Sydney) (2h before working hours in Sydney).
With no shared business hours, these slots distribute the scheduling burden as evenly as possible between both locations.
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 MDT (Denver) time instantly. You can also type natural language like "3pm", "15:00", or a location name to get an immediate answer.
