The short answer

11pm in Adelaide is 10:30pm in Japan Standard Time.

Adelaide is 30 minutes ahead of Japan Standard Time. It lands deep outside working hours in Japan Standard Time — see the best time to meet below for a friendlier slot.

Adelaide
11pm
Japan Standard Time
10:30pm
Right now
1:06pmACST · UTC+09:30 · Sat, Jun 27
12:36pmJST · UTC+09:00 · Sat, Jun 27
Read across to convert
Adelaide
ACST · UTC+09:30
1:06pm ☀
Japan Standard Time
JST · UTC+09:00
12:36pm ☀
Pinned11pmAdelaide=10:30pmJapan Standard Time
12amSat
11:30pmFri ·−1d
1am
12:30amSat
2am
1:30am
3am
2:30am
4am
3:30am
5am
4:30am
6am
5:30am
7am
6:30am
8am
7:30am
9am
WORK
8:30am
10am
WORK
9:30am
WORK
11am
WORK
10:30am
WORK
12pm
WORK
11:30am
WORK
NOW
1pm
WORK
12:30pm
WORK
2pm
WORK
1:30pm
WORK
3pm
WORK
2:30pm
WORK
4pm
WORK
3:30pm
WORK
5pm
4:30pm
WORK
6pm
5:30pm
7pm
6:30pm
8pm
7:30pm
9pm
8:30pm
10pm
9:30pm
PINNED
11pm
10:30pm
daylightnightworking hoursoverlap
Best time to meet
Best for a call
Adelaide
10am–5pm
=
Japan Standard Time
9:30am–4:30pm
Popular conversions

Quick reference.

9amAdelaide=8:30amJapan Standard Time
12pmAdelaide=11:30amJapan Standard Time
3pmAdelaide=2:30pmJapan Standard Time
5pmAdelaide=4:30pmJapan Standard Time
9pmAdelaide=8:30pmJapan Standard Time
In context

What each side covers.

Adelaide
ACST · UTC+09:30
1:06pm

Australia

Japan Standard Time
JST · UTC+09:00
12:36pm
Cities on this clock

Frequently asked

Quick answers about converting between Adelaide and Japan Standard Time. Can't find what you need? Email [email protected].

What is the time difference between Adelaide and Japan Standard Time?
Adelaide is 30 minutes ahead of Japan Standard Time right now. We always show the live, daylight-saving-correct difference, so this figure already accounts for whichever side is observing summer time today.
When it's 11pm in Adelaide, what time is it in Japan Standard Time?
11pm in Adelaide is 10:30pm in Japan Standard Time. It lands deep outside working hours in Japan Standard Time — see the best time to meet below for a friendlier slot. Use the hour-by-hour table above to read any other time across.
What's the best time for a call between Adelaide and Japan Standard Time?
10am–5pm in Adelaide lines up with 9:30am–4:30pm in Japan Standard Time — both sides are inside a 9-to-5 working day.
Does this account for daylight saving time?
Yes. We track every clock change in both places, so the abbreviations you see — ACST and JST — are the ones actually in effect right now, not a fixed all-year value. When either side changes its clocks, this page updates automatically.
Why is the date sometimes different on each side?
When two places are far enough apart, the same moment can fall on different calendar days. That is why some conversions are marked "previous day" or "next day" — it is the same instant in time, read off two clocks that crossed midnight at different points.