AEST to Ottawa Time Converter
EST is 16 hours behind AEDT. 9:00 AM AEDT = 5:00 PM EST (previous day).
EST is 16 hours behind AEDT at the moment. To convert AEST to Ottawa Time, subtract 16 hours from the AEST time: 9:00 AM AEDT = 5:00 PM EST (previous day).
AEST (Australian Eastern Time) is used in New South Wales, Victoria, Tasmania, ACT; Queensland (Brisbane) all year. Ottawa Time (Ottawa time) is used in Ottawa, 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 Ottawa Time time conversion table
AEST to Ottawa Time on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| AEST | Ottawa Time | Day |
|---|---|---|
| 12:00 AM AEDT | 8:00 AM EST | previous day |
| 1:00 AM AEDT | 9:00 AM EST | previous day |
| 2:00 AM AEDT | 10:00 AM EST | previous day |
| 3:00 AM AEDT | 11:00 AM EST | previous day |
| 4:00 AM AEDT | 12:00 PM EST | previous day |
| 5:00 AM AEDT | 1:00 PM EST | previous day |
| 6:00 AM AEDT | 2:00 PM EST | previous day |
| 7:00 AM AEDT | 3:00 PM EST | previous day |
| 8:00 AM AEDT | 4:00 PM EST | previous day |
| 9:00 AM AEDT | 5:00 PM EST | previous day |
| 10:00 AM AEDT | 6:00 PM EST | previous day |
| 11:00 AM AEDT | 7:00 PM EST | previous day |
| 12:00 PM AEDT | 8:00 PM EST | previous day |
| 1:00 PM AEDT | 9:00 PM EST | previous day |
| 2:00 PM AEDT | 10:00 PM EST | previous day |
| 3:00 PM AEDT | 11:00 PM EST | previous day |
| 4:00 PM AEDT | 12:00 AM EST | night |
| 5:00 PM AEDT | 1:00 AM EST | night |
| 6:00 PM AEDT | 2:00 AM EST | night |
| 7:00 PM AEDT | 3:00 AM EST | night |
| 8:00 PM AEDT | 4:00 AM EST | night |
| 9:00 PM AEDT | 5:00 AM EST | night |
| 10:00 PM AEDT | 6:00 AM EST | — |
| 11:00 PM AEDT | 7:00 AM EST | — |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert AEST to Ottawa Time
Subtract 16 hours from the AEST time to get Ottawa Time.
Example: 9:00 AM AEDT = 5:00 PM EST (previous day).
Across midnight: 1:00 AM AEDT = 9:00 AM EST (previous day). The date changes, so always check the day as well as the hour.
Time difference between AEST and Ottawa Time
The time difference between AEST and Ottawa 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: Ottawa Time is 16 hours behind of AEST.
- 8 Mar 2026 – 4 Apr 2026: Ottawa Time is 15 hours behind of AEST.
- 5 Apr 2026 – 3 Oct 2026: Ottawa Time is 14 hours behind of AEST.
- 4 Oct 2026 – 31 Oct 2026: Ottawa Time is 15 hours behind of AEST.
- 1 Nov 2026 – 31 Dec 2026: Ottawa Time is 16 hours behind of AEST.
AEST and Ottawa 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).
- Ottawa Time next changes on 14 Mar 2027: clocks go forward one hour at 01:59 local time, from EST (UTC−5) to EDT (UTC−4).
Best time for a meeting between AEST and Ottawa Time
AEST and Ottawa 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 3:00 PM EST.
AEST to Ottawa Time FAQ
What is the time difference between AEST and Ottawa Time?
Right now EST is 16 hours behind AEDT. The gap changes 5 times in 2026 because the two sides switch to daylight saving time on different dates.
What is 9 AM AEST in Ottawa Time?
9:00 AM AEDT is 5:00 PM EST (previous day).
What is 12 PM (noon) AEST in Ottawa Time?
12:00 PM AEDT is 8:00 PM EST (previous day).
Is Ottawa Time ahead of or behind AEST?
EST is 16 hours behind AEDT, so it is earlier in Ottawa 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 Ottawa Time change for daylight saving time?
Yes. Ottawa Time next changes on 14 Mar 2027, when clocks go forward one hour from EST to EDT.
What is the best time for a meeting between AEST and Ottawa Time?
AEST and Ottawa 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 3:00 PM EST.
Related conversions
Convert Ottawa Time to AEST
Convert AEST to other time zones
Convert other time zones to Ottawa Time
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.