AST to ACST Converter

ACST is 13h 30m ahead of AST. When it's 12:00 PM AST, it's 1:30 AM (+1 day) ACST.

From

AST · UTC-4

12:09:48AM

Atlantic Standard Time

e.g. Halifax, Puerto Rico

To

ACST · UTC+9:30

1:39:48PM

Australian Central Standard Time

e.g. Adelaide, Darwin

Open in World ClockACST → AST
9:00 AM AST=10:30 PM ACST
12:00 PM AST=1:30 AM(+1 day) ACST
5:00 PM AST=6:30 AM(+1 day) ACST

Hourly conversion (AST → ACST)

ASTACST
12:00 AM1:30 PM
1:00 AM2:30 PM
2:00 AM3:30 PM
3:00 AM4:30 PM
4:00 AM5:30 PM
5:00 AM6:30 PM
6:00 AM7:30 PM
7:00 AM8:30 PM
8:00 AM9:30 PM
9:00 AM10:30 PM
10:00 AM11:30 PM
11:00 AM12:30 AM(+1 day)
12:00 PM1:30 AM(+1 day)
1:00 PM2:30 AM(+1 day)
2:00 PM3:30 AM(+1 day)
3:00 PM4:30 AM(+1 day)
4:00 PM5:30 AM(+1 day)
5:00 PM6:30 AM(+1 day)
6:00 PM7:30 AM(+1 day)
7:00 PM8:30 AM(+1 day)
8:00 PM9:30 AM(+1 day)
9:00 PM10:30 AM(+1 day)
10:00 PM11:30 AM(+1 day)
11:00 PM12:30 PM(+1 day)

Shaded rows are within standard working hours (8am–6pm) on both sides.

More AST conversions

Frequently asked questions

What is the time difference between AST and ACST?
ACST is 13h 30m ahead of AST. AST is UTC-4 and ACST is UTC+9:30.
What is 12:00 PM AST in ACST?
12:00 PM AST is 1:30 AM (+1 day) ACST.
Does AST change for daylight saving time?
AST is a fixed offset of UTC-4 and does not itself change for daylight saving time.