AST to AWST Converter
AWST is 12 hours ahead of AST. 9:00 AM AST = 9:00 PM AWST.
AWST is 12 hours ahead of AST at the moment. To convert AST to AWST, add 12 hours to the AST time: 9:00 AM AST = 9:00 PM AWST.
AST (Atlantic Time) is used in Nova Scotia, New Brunswick, PEI; Puerto Rico and the Eastern Caribbean (all year). AWST (Australian Western Time) is used in Western Australia (Perth).
AST here is Atlantic Standard Time, not Arabia Standard Time.
AST to AWST time conversion table
AST to AWST on 6 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| AST | AWST | Day |
|---|---|---|
| 12:00 AM AST | 12:00 PM AWST | — |
| 1:00 AM AST | 1:00 PM AWST | — |
| 2:00 AM AST | 2:00 PM AWST | — |
| 3:00 AM AST | 3:00 PM AWST | — |
| 4:00 AM AST | 4:00 PM AWST | — |
| 5:00 AM AST | 5:00 PM AWST | — |
| 6:00 AM AST | 6:00 PM AWST | — |
| 7:00 AM AST | 7:00 PM AWST | — |
| 8:00 AM AST | 8:00 PM AWST | — |
| 9:00 AM AST | 9:00 PM AWST | — |
| 10:00 AM AST | 10:00 PM AWST | night |
| 11:00 AM AST | 11:00 PM AWST | night |
| 12:00 PM AST | 12:00 AM AWST | next day |
| 1:00 PM AST | 1:00 AM AWST | next day |
| 2:00 PM AST | 2:00 AM AWST | next day |
| 3:00 PM AST | 3:00 AM AWST | next day |
| 4:00 PM AST | 4:00 AM AWST | next day |
| 5:00 PM AST | 5:00 AM AWST | next day |
| 6:00 PM AST | 6:00 AM AWST | next day |
| 7:00 PM AST | 7:00 AM AWST | next day |
| 8:00 PM AST | 8:00 AM AWST | next day |
| 9:00 PM AST | 9:00 AM AWST | next day |
| 10:00 PM AST | 10:00 AM AWST | next day |
| 11:00 PM AST | 11:00 AM AWST | next day |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert AST to AWST
Add 12 hours to the AST time to get AWST.
Example: 9:00 AM AST = 9:00 PM AWST.
Across midnight: 10:00 PM AST = 10:00 AM AWST (next day). The date changes, so always check the day as well as the hour.
Time difference between AST and AWST
The time difference between AST and AWST 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: AWST is 12 hours ahead of AST.
- 8 Mar 2026 – 31 Oct 2026: AWST is 11 hours ahead of AST.
- 1 Nov 2026 – 30 Dec 2026: AWST is 12 hours ahead of AST.
AST and AWST 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).
- AWST does not observe daylight saving time; it stays on UTC+8 all year.
Best time for a meeting between AST and AWST
AST and AWST have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM AST, which is 7:00 PM AWST.
AST to AWST FAQ
What is the time difference between AST and AWST?
Right now AWST is 12 hours ahead of AST. The gap changes 3 times in 2026 because the two sides switch to daylight saving time on different dates.
What is 9 AM AST in AWST?
9:00 AM AST is 9:00 PM AWST.
What is 12 PM (noon) AST in AWST?
12:00 PM AST is 12:00 AM AWST (next day).
Is AWST ahead of or behind AST?
AWST is 12 hours ahead of AST, so it is later in AWST 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 AWST change for daylight saving time?
No. AWST stays on the same offset all year, so conversions never shift for daylight saving time.
What is the best time for a meeting between AST and AWST?
AST and AWST have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM AST, which is 7:00 PM AWST.
Related conversions
Convert AWST to AST
Convert AST to other time zones
Convert other time zones to AWST
Learn more
Updated 6 November 2026. Time zone data: IANA tz database.