AEST to Calgary Time Converter
MDT is 17 hours behind AEDT. 9:00 AM AEDT = 4:00 PM MDT (previous day).
MDT is 17 hours behind AEDT at the moment. To convert AEST to Calgary Time, subtract 17 hours from the AEST time: 9:00 AM AEDT = 4:00 PM MDT (previous day).
AEST (Australian Eastern Time) is used in New South Wales, Victoria, Tasmania, ACT; Queensland (Brisbane) all year. Calgary Time (Calgary time) is used in Calgary, Canada.
Queensland stays on AEST all year. AEST (Australian Eastern Standard Time) is not in force right now: New South Wales is currently on AEDT. This page uses whichever name applies on the date you pick, so the numbers below say AEDT.
AEST to Calgary Time time conversion table
AEST to Calgary Time on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| AEST | Calgary Time | Day |
|---|---|---|
| 12:00 AM AEDT | 7:00 AM MDT | previous day |
| 1:00 AM AEDT | 8:00 AM MDT | previous day |
| 2:00 AM AEDT | 9:00 AM MDT | previous day |
| 3:00 AM AEDT | 10:00 AM MDT | previous day |
| 4:00 AM AEDT | 11:00 AM MDT | previous day |
| 5:00 AM AEDT | 12:00 PM MDT | previous day |
| 6:00 AM AEDT | 1:00 PM MDT | previous day |
| 7:00 AM AEDT | 2:00 PM MDT | previous day |
| 8:00 AM AEDT | 3:00 PM MDT | previous day |
| 9:00 AM AEDT | 4:00 PM MDT | work hours |
| 10:00 AM AEDT | 5:00 PM MDT | previous day |
| 11:00 AM AEDT | 6:00 PM MDT | previous day |
| 12:00 PM AEDT | 7:00 PM MDT | previous day |
| 1:00 PM AEDT | 8:00 PM MDT | previous day |
| 2:00 PM AEDT | 9:00 PM MDT | previous day |
| 3:00 PM AEDT | 10:00 PM MDT | previous day |
| 4:00 PM AEDT | 11:00 PM MDT | previous day |
| 5:00 PM AEDT | 12:00 AM MDT | night |
| 6:00 PM AEDT | 1:00 AM MDT | night |
| 7:00 PM AEDT | 2:00 AM MDT | night |
| 8:00 PM AEDT | 3:00 AM MDT | night |
| 9:00 PM AEDT | 4:00 AM MDT | night |
| 10:00 PM AEDT | 5:00 AM MDT | night |
| 11:00 PM AEDT | 6:00 AM MDT | — |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert AEST to Calgary Time
Subtract 17 hours from the AEST time to get Calgary Time.
Example: 9:00 AM AEDT = 4:00 PM MDT (previous day).
Across midnight: 1:00 AM AEDT = 8:00 AM MDT (previous day). The date changes, so always check the day as well as the hour.
Time difference between AEST and Calgary Time
The time difference between AEST and Calgary Time is not the same all year, because the two sides change for daylight saving time on different dates. In 2026 it works out like this:
- 1 Jan 2026 – 7 Mar 2026: Calgary Time is 18 hours behind of AEST.
- 8 Mar 2026 – 4 Apr 2026: Calgary Time is 17 hours behind of AEST.
- 5 Apr 2026 – 3 Oct 2026: Calgary Time is 16 hours behind of AEST.
- 4 Oct 2026 – 31 Dec 2026: Calgary Time is 17 hours behind of AEST.
AEST and Calgary Time during daylight saving time
- AEST next changes on 4 Apr 2027: clocks go back one hour at 02:59 local time, from AEDT (UTC+11) to AEST (UTC+10).
- Calgary Time does not observe daylight saving time; it stays on UTC−6 all year.
Best time for a meeting between AEST and Calgary Time
AEST and Calgary Time have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM AEDT, which is 2:00 PM MDT.
AEST to Calgary Time FAQ
What is the time difference between AEST and Calgary Time?
Right now MDT is 17 hours behind AEDT. The gap changes 4 times in 2026 because the two sides switch to daylight saving time on different dates.
What is 9 AM AEST in Calgary Time?
9:00 AM AEDT is 4:00 PM MDT (previous day).
What is 12 PM (noon) AEST in Calgary Time?
12:00 PM AEDT is 7:00 PM MDT (previous day).
Is Calgary Time ahead of or behind AEST?
MDT is 17 hours behind AEDT, so it is earlier in Calgary Time than in AEST.
Does AEST change for daylight saving time?
Yes. AEST next changes on 4 Apr 2027, when clocks go back one hour from AEDT to AEST.
Does Calgary Time change for daylight saving time?
No. Calgary Time stays on the same offset all year, so conversions never shift for daylight saving time.
What is the best time for a meeting between AEST and Calgary Time?
AEST and Calgary Time have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM AEDT, which is 2:00 PM MDT.
Related conversions
Convert Calgary Time to AEST
Convert AEST to other time zones
Convert other time zones to Calgary Time
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.