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  3. ACST to JST
  4. 1 AM

1 AM ACST to JST

1 AM ACST = 11:30 PM JST (previous day). JST is 1 hour 30 minutes behind of ACST today.

7 hours of the workday overlap: 11 AM-6 PM ACST is 9:30 AM-4:30 PM JST. Quick answers: 9 AM ACST = 7:30 AM JST, 12 PM ACST = 10:30 AM JST, 5 PM ACST = 3:30 PM JST.

ACST · Australian Central Standard Time

UTC+10:30

JST · Japan Standard Time

UTC+9

Convert a time

JST
--:--

Working hours side by side

columns: ACST hours
PING · 09–18 local MAYBE · 07–09, 18–21 NOT NOW · 21–07Outlined: everyone can be pinged

ACST to JST conversion table

ACSTJSTVerdict in JST
12 AM · 00:0010:30 PM · 22:30 (previous day)NOT NOW
1 AM · 01:0011:30 PM · 23:30 (previous day)NOT NOW
2 AM · 02:0012:30 AM · 00:30NOT NOW
3 AM · 03:001:30 AM · 01:30NOT NOW
4 AM · 04:002:30 AM · 02:30NOT NOW
5 AM · 05:003:30 AM · 03:30NOT NOW
6 AM · 06:004:30 AM · 04:30NOT NOW
7 AM · 07:005:30 AM · 05:30NOT NOW
8 AM · 08:006:30 AM · 06:30NOT NOW
9 AM · 09:007:30 AM · 07:30MAYBE
10 AM · 10:008:30 AM · 08:30MAYBE
11 AM · 11:009:30 AM · 09:30PING
12 PM · 12:0010:30 AM · 10:30PING
1 PM · 13:0011:30 AM · 11:30PING
2 PM · 14:0012:30 PM · 12:30PING
3 PM · 15:001:30 PM · 13:30PING
4 PM · 16:002:30 PM · 14:30PING
5 PM · 17:003:30 PM · 15:30PING
6 PM · 18:004:30 PM · 16:30PING
7 PM · 19:005:30 PM · 17:30PING
8 PM · 20:006:30 PM · 18:30MAYBE
9 PM · 21:007:30 PM · 19:30MAYBE
10 PM · 22:008:30 PM · 20:30MAYBE
11 PM · 23:009:30 PM · 21:30NOT NOW

Cities on ACST

Australia/Adelaide
AdelaideAdelaide HillsMount GambierMorphett ValeMount BarkerWhyalla

Cities on JST

Asia/Tokyo
TokyoYokohamaOsakaNagoyaSapporoFukuoka

Other conversions

All converters
JST → ACSTACST → ESTACST → EDTACST → PSTACST → PDTACST → CSTACST → CDTACST → MSTACST → GMTACST → UTCACST → BST

Questions

What is the time difference between ACST and JST?

JST (Japan Standard Time) is 1 hour 30 minutes behind of ACST (Australian Central Standard Time) right now: UTC+10:30 versus UTC+9.

What is 9 AM ACST in JST?

9:00 AM ACST is 7:30 AM JST.

What is 5 PM ACST in JST?

5:00 PM ACST is 3:30 PM JST.

Does daylight saving change the ACST–JST difference?

Adelaide switches between ACST; next change Sunday, 4 April 2027 (UTC+10:30 → UTC+9:30). JST has no daylight saving; it stays UTC+9 all year.