JST to Adelaide Time Converter
ACDT is 1 hour 30 minutes ahead of JST. 9:00 AM JST = 10:30 AM ACDT.
ACDT is 1 hour 30 minutes ahead of JST at the moment. To convert JST to Adelaide Time, add 1 hour 30 minutes to the JST time: 9:00 AM JST = 10:30 AM ACDT.
JST (Japan Time) is used in Japan. Adelaide Time (Adelaide time) is used in Adelaide, Australia.
JST to Adelaide Time time conversion table
JST to Adelaide Time on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| JST | Adelaide Time | Day |
|---|---|---|
| 12:00 AM JST | 1:30 AM ACDT | night |
| 1:00 AM JST | 2:30 AM ACDT | night |
| 2:00 AM JST | 3:30 AM ACDT | night |
| 3:00 AM JST | 4:30 AM ACDT | night |
| 4:00 AM JST | 5:30 AM ACDT | night |
| 5:00 AM JST | 6:30 AM ACDT | — |
| 6:00 AM JST | 7:30 AM ACDT | — |
| 7:00 AM JST | 8:30 AM ACDT | — |
| 8:00 AM JST | 9:30 AM ACDT | — |
| 9:00 AM JST | 10:30 AM ACDT | work hours |
| 10:00 AM JST | 11:30 AM ACDT | work hours |
| 11:00 AM JST | 12:30 PM ACDT | work hours |
| 12:00 PM JST | 1:30 PM ACDT | work hours |
| 1:00 PM JST | 2:30 PM ACDT | work hours |
| 2:00 PM JST | 3:30 PM ACDT | work hours |
| 3:00 PM JST | 4:30 PM ACDT | work hours |
| 4:00 PM JST | 5:30 PM ACDT | — |
| 5:00 PM JST | 6:30 PM ACDT | — |
| 6:00 PM JST | 7:30 PM ACDT | — |
| 7:00 PM JST | 8:30 PM ACDT | — |
| 8:00 PM JST | 9:30 PM ACDT | — |
| 9:00 PM JST | 10:30 PM ACDT | night |
| 10:00 PM JST | 11:30 PM ACDT | night |
| 11:00 PM JST | 12:30 AM ACDT | next day |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert JST to Adelaide Time
Add 1 hour 30 minutes to the JST time to get Adelaide Time.
Example: 9:00 AM JST = 10:30 AM ACDT.
Across midnight: 11:00 PM JST = 12:30 AM ACDT (next day). The date changes, so always check the day as well as the hour.
Time difference between JST and Adelaide Time
The time difference between JST and Adelaide Time is not the same all year, because the two sides change for daylight saving time on different dates. In 2026 it works out like this:
- 1 Jan 2026 – 4 Apr 2026: Adelaide Time is 1 hour 30 minutes ahead of JST.
- 5 Apr 2026 – 3 Oct 2026: Adelaide Time is 30 minutes ahead of JST.
- 4 Oct 2026 – 31 Dec 2026: Adelaide Time is 1 hour 30 minutes ahead of JST.
JST and Adelaide Time during daylight saving time
- JST does not observe daylight saving time; it stays on UTC+9 all year.
- Adelaide Time next changes on 4 Apr 2027: clocks go back one hour at 02:59 local time, from ACDT (UTC+10:30) to ACST (UTC+9:30).
Best time for a meeting between JST and Adelaide Time
JST and Adelaide Time share 6 hours 30 minutes of the 9 AM–5 PM working day. Any time between 9:00 AM and 3:30 PM JST lands between 10:30 AM and 5:00 PM ACDT, inside working hours for both.
JST to Adelaide Time FAQ
What is the time difference between JST and Adelaide Time?
Right now ACDT is 1 hour 30 minutes ahead of JST. The gap changes 3 times in 2026 because the two sides switch to daylight saving time on different dates.
What is 9 AM JST in Adelaide Time?
9:00 AM JST is 10:30 AM ACDT.
What is 12 PM (noon) JST in Adelaide Time?
12:00 PM JST is 1:30 PM ACDT.
Is Adelaide Time ahead of or behind JST?
ACDT is 1 hour 30 minutes ahead of JST, so it is later in Adelaide Time than in JST.
Does JST change for daylight saving time?
No. JST stays on the same offset all year, so conversions never shift for daylight saving time.
Does Adelaide Time change for daylight saving time?
Yes. Adelaide Time next changes on 4 Apr 2027, when clocks go back one hour from ACDT to ACST.
What is the best time for a meeting between JST and Adelaide Time?
JST and Adelaide Time share 6 hours 30 minutes of the 9 AM–5 PM working day. Any time between 9:00 AM and 3:30 PM JST lands between 10:30 AM and 5:00 PM ACDT, inside working hours for both.
Related conversions
Convert Adelaide Time to JST
Convert JST to other time zones
Convert other time zones to Adelaide Time
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.