AST to AEST Converter
AEDT is 15 hours ahead of AST. 9:00 AM AST = 12:00 AM AEDT (next day).
AEDT is 15 hours ahead of AST at the moment. To convert AST to AEST, add 15 hours to the AST time: 9:00 AM AST = 12:00 AM AEDT (next day).
AST (Atlantic Time) is used in Nova Scotia, New Brunswick, PEI; Puerto Rico and the Eastern Caribbean (all year). AEST (Australian Eastern Time) is used in New South Wales, Victoria, Tasmania, ACT; Queensland (Brisbane) all year.
AST here is Atlantic Standard Time, not Arabia Standard Time. 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.
AST to AEST time conversion table
AST to AEST on 6 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| AST | AEST | Day |
|---|---|---|
| 12:00 AM AST | 3:00 PM AEDT | — |
| 1:00 AM AST | 4:00 PM AEDT | — |
| 2:00 AM AST | 5:00 PM AEDT | — |
| 3:00 AM AST | 6:00 PM AEDT | — |
| 4:00 AM AST | 7:00 PM AEDT | — |
| 5:00 AM AST | 8:00 PM AEDT | — |
| 6:00 AM AST | 9:00 PM AEDT | — |
| 7:00 AM AST | 10:00 PM AEDT | night |
| 8:00 AM AST | 11:00 PM AEDT | night |
| 9:00 AM AST | 12:00 AM AEDT | next day |
| 10:00 AM AST | 1:00 AM AEDT | next day |
| 11:00 AM AST | 2:00 AM AEDT | next day |
| 12:00 PM AST | 3:00 AM AEDT | next day |
| 1:00 PM AST | 4:00 AM AEDT | next day |
| 2:00 PM AST | 5:00 AM AEDT | next day |
| 3:00 PM AST | 6:00 AM AEDT | next day |
| 4:00 PM AST | 7:00 AM AEDT | next day |
| 5:00 PM AST | 8:00 AM AEDT | next day |
| 6:00 PM AST | 9:00 AM AEDT | next day |
| 7:00 PM AST | 10:00 AM AEDT | next day |
| 8:00 PM AST | 11:00 AM AEDT | next day |
| 9:00 PM AST | 12:00 PM AEDT | next day |
| 10:00 PM AST | 1:00 PM AEDT | next day |
| 11:00 PM AST | 2:00 PM AEDT | next day |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert AST to AEST
Add 15 hours to the AST time to get AEST.
Example: 9:00 AM AST = 12:00 AM AEDT (next day).
Across midnight: 10:00 PM AST = 1:00 PM AEDT (next day). The date changes, so always check the day as well as the hour.
Time difference between AST and AEST
The time difference between AST and AEST 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:
- 31 Dec 2025 – 7 Mar 2026: AEST is 15 hours ahead of AST.
- 8 Mar 2026 – 3 Apr 2026: AEST is 14 hours ahead of AST.
- 4 Apr 2026 – 2 Oct 2026: AEST is 13 hours ahead of AST.
- 3 Oct 2026 – 31 Oct 2026: AEST is 14 hours ahead of AST.
- 1 Nov 2026 – 30 Dec 2026: AEST is 15 hours ahead of AST.
AST and AEST during daylight saving time
- AST next changes on 14 Mar 2027: clocks go forward one hour at 01:59 local time, from AST (UTC−4) to ADT (UTC−3).
- 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).
Best time for a meeting between AST and AEST
AST and AEST have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM AST, which is 10:00 PM AEDT.
AST to AEST FAQ
What is the time difference between AST and AEST?
Right now AEDT is 15 hours ahead of AST. The gap changes 5 times in 2026 because the two sides switch to daylight saving time on different dates.
What is 9 AM AST in AEST?
9:00 AM AST is 12:00 AM AEDT (next day).
What is 12 PM (noon) AST in AEST?
12:00 PM AST is 3:00 AM AEDT (next day).
Is AEST ahead of or behind AST?
AEDT is 15 hours ahead of AST, so it is later in AEST than in AST.
Does AST change for daylight saving time?
Yes. AST next changes on 14 Mar 2027, when clocks go forward one hour from AST to ADT.
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.
What is the best time for a meeting between AST and AEST?
AST and AEST have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM AST, which is 10:00 PM AEDT.
Related conversions
Convert AEST to AST
Convert AST to other time zones
Convert other time zones to AEST
Learn more
Updated 6 November 2026. Time zone data: IANA tz database.