3 AM JST to ACST
3 AM JST = 4:30 AM ACST. ACST is 1 hour 30 minutes ahead of JST today.
8 hours of the workday overlap: 9 AM-5 PM JST is 10:30 AM-6:30 PM ACST. Quick answers: 9 AM JST = 10:30 AM ACST, 12 PM JST = 1:30 PM ACST, 5 PM JST = 6:30 PM ACST.
Convert a time
ACST
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Working hours side by side
columns: JST hours PING · 09–18 local MAYBE · 07–09, 18–21 NOT NOW · 21–07Outlined: everyone can be pinged
JST to ACST conversion table
| JST | ACST | Verdict in ACST |
|---|---|---|
| 12 AM · 00:00 | 1:30 AM · 01:30 | NOT NOW |
| 1 AM · 01:00 | 2:30 AM · 02:30 | NOT NOW |
| 2 AM · 02:00 | 3:30 AM · 03:30 | NOT NOW |
| 3 AM · 03:00 | 4:30 AM · 04:30 | NOT NOW |
| 4 AM · 04:00 | 5:30 AM · 05:30 | NOT NOW |
| 5 AM · 05:00 | 6:30 AM · 06:30 | NOT NOW |
| 6 AM · 06:00 | 7:30 AM · 07:30 | MAYBE |
| 7 AM · 07:00 | 8:30 AM · 08:30 | MAYBE |
| 8 AM · 08:00 | 9:30 AM · 09:30 | PING |
| 9 AM · 09:00 | 10:30 AM · 10:30 | PING |
| 10 AM · 10:00 | 11:30 AM · 11:30 | PING |
| 11 AM · 11:00 | 12:30 PM · 12:30 | PING |
| 12 PM · 12:00 | 1:30 PM · 13:30 | PING |
| 1 PM · 13:00 | 2:30 PM · 14:30 | PING |
| 2 PM · 14:00 | 3:30 PM · 15:30 | PING |
| 3 PM · 15:00 | 4:30 PM · 16:30 | PING |
| 4 PM · 16:00 | 5:30 PM · 17:30 | PING |
| 5 PM · 17:00 | 6:30 PM · 18:30 | MAYBE |
| 6 PM · 18:00 | 7:30 PM · 19:30 | MAYBE |
| 7 PM · 19:00 | 8:30 PM · 20:30 | MAYBE |
| 8 PM · 20:00 | 9:30 PM · 21:30 | NOT NOW |
| 9 PM · 21:00 | 10:30 PM · 22:30 | NOT NOW |
| 10 PM · 22:00 | 11:30 PM · 23:30 | NOT NOW |
| 11 PM · 23:00 | 12:30 AM · 00:30 (next day) | NOT NOW |
Cities on JST
Asia/TokyoCities on ACST
Australia/AdelaideOther conversions
All convertersQuestions
What is the time difference between JST and ACST?
ACST (Australian Central Standard Time) is 1 hour 30 minutes ahead of JST (Japan Standard Time) right now: UTC+9 versus UTC+10:30.
What is 9 AM JST in ACST?
9:00 AM JST is 10:30 AM ACST.
What is 5 PM JST in ACST?
5:00 PM JST is 6:30 PM ACST.
Does daylight saving change the JST–ACST difference?
JST has no daylight saving; it stays UTC+9 all year. Adelaide switches between ACST; next change Sunday, 4 April 2027 (UTC+10:30 → UTC+9:30).