Convert ACDT to AWST
AWST is 2 hours 30 minutes behind ACDT. ACDT is UTC+10:30 and AWST is UTC+8.
Right now: ACDT · AWST
Best time to schedule a meeting
Standard 9–5 working hours overlap for 5 hours: 12:00 PM–5:00 PM ACDT (9:00 AM–2:00 PM AWST). Schedule meetings inside that window.
| ACDT | AWST | Suitable? |
|---|---|---|
| 9:00 AM | 6:30 AM | outside 9–5 |
| 10:00 AM | 7:30 AM | outside 9–5 |
| 11:00 AM | 8:30 AM | outside 9–5 |
| 12:00 PM | 9:30 AM | working hours |
| 1:00 PM | 10:30 AM | working hours |
| 2:00 PM | 11:30 AM | working hours |
| 3:00 PM | 12:30 PM | working hours |
| 4:00 PM | 1:30 PM | working hours |
| 5:00 PM | 2:30 PM | working hours |
ACDT to AWST conversion table
| ACDT | AWST |
|---|---|
| 12:00 AM | 9:30 PM (previous day) |
| 1:00 AM | 10:30 PM (previous day) |
| 2:00 AM | 11:30 PM (previous day) |
| 3:00 AM | 12:30 AM |
| 4:00 AM | 1:30 AM |
| 5:00 AM | 2:30 AM |
| 6:00 AM | 3:30 AM |
| 7:00 AM | 4:30 AM |
| 8:00 AM | 5:30 AM |
| 9:00 AM | 6:30 AM |
| 10:00 AM | 7:30 AM |
| 11:00 AM | 8:30 AM |
| 12:00 PM | 9:30 AM |
| 1:00 PM | 10:30 AM |
| 2:00 PM | 11:30 AM |
| 3:00 PM | 12:30 PM |
| 4:00 PM | 1:30 PM |
| 5:00 PM | 2:30 PM |
| 6:00 PM | 3:30 PM |
| 7:00 PM | 4:30 PM |
| 8:00 PM | 5:30 PM |
| 9:00 PM | 6:30 PM |
| 10:00 PM | 7:30 PM |
| 11:00 PM | 8:30 PM |
About ACDT
Australian Central Daylight Time (ACDT) is UTC+10:30. It is used in Adelaide in summer.
Australian Central Daylight Time is UTC+10:30, what South Australia keeps from October to April. Darwin stays on ACST through the summer, so for those months two cities in the same nominal zone are an hour apart — the only reason to be precise about which of the two abbreviations a meeting invitation carries.
About AWST
Australian Western Standard Time (AWST) is UTC+8. It is used in Perth and Western Australia.
Australian Western Standard Time is UTC+8 and Western Australia does not observe daylight saving — it has rejected it in four referendums, most recently in 2009. Perth therefore keeps the same offset all year while Sydney moves, so the gap between Australia's two largest business centres is two hours in winter and three in summer.
Does this gap change with the seasons?
Neither ACDT nor AWST shifts with the seasons, so this 2.5-hour difference holds all year. That is unusual enough to be worth relying on: most cross-continental gaps move twice a year.
This is the reason scheduling systems store an IANA zone such as Region/City rather than an offset or an abbreviation: the zone knows its own rules and the offset does not.
Frequently asked questions
What time is 9:00 AM ACDT in AWST?
9:00 AM ACDT is 6:30 AM AWST.
Is AWST ahead of ACDT?
AWST is 2 hours 30 minutes behind ACDT.
Which time zone does this use?
ACDT is UTC+10:30 and AWST is UTC+8. Both abbreviations denote a single fixed offset, so this conversion never shifts with daylight saving — what changes is which abbreviation a place is using at the time.