JST to ACST Time Converter
ACST is 1 hour 30 minutes ahead of JST right now. 9:00 AM in JST is 10:30 AM in ACST.
Time now: JST and ACST
ACST is 1 hour 30 minutes ahead of JST right now. The gap is not fixed: it is 30 minutes at some times of the year and 1 hour 30 minutes at others, because at least one of them changes its clocks for daylight saving time.
JST to ACST conversion table
Every hour of the day, using today's time difference.
| JST | ACST |
|---|---|
| 12:00 AM | 1:30 AM |
| 1:00 AM | 2:30 AM |
| 2:00 AM | 3:30 AM |
| 3:00 AM | 4:30 AM |
| 4:00 AM | 5:30 AM |
| 5:00 AM | 6:30 AM |
| 6:00 AM | 7:30 AM |
| 7:00 AM | 8:30 AM |
| 8:00 AM | 9:30 AM |
| 9:00 AM | 10:30 AM |
| 10:00 AM | 11:30 AM |
| 11:00 AM | 12:30 PM |
| 12:00 PM | 1:30 PM |
| 1:00 PM | 2:30 PM |
| 2:00 PM | 3:30 PM |
| 3:00 PM | 4:30 PM |
| 4:00 PM | 5:30 PM |
| 5:00 PM | 6:30 PM |
| 6:00 PM | 7:30 PM |
| 7:00 PM | 8:30 PM |
| 8:00 PM | 9:30 PM |
| 9:00 PM | 10:30 PM |
| 10:00 PM | 11:30 PM |
| 11:00 PM | 12:30 AMnext day |
Best time to meet between JST and ACST
Working hours overlap (9 AM – 6 PM in both places):
- 9:00 AM – 5:00 PM JST = 10:30 AM – 6:30 PM ACST
The time difference changes during the year because of daylight saving time, so these windows shift by an hour at other times.
Does the time difference between JST and ACST change?
Yes. Right now ACST is 1 hour 30 minutes ahead of JST. These are the dates in the next 12 months when the gap changes:
- Sunday, 4 April 2027: ACST moves its clocks back. ACST is 30 minutes ahead of JST from then (it was 1 hour 30 minutes before).
- Sunday, 3 October 2027: ACST moves its clocks forward. ACST is 1 hour 30 minutes ahead of JST from then (it was 30 minutes before).
Office hours in each other's time
- 9 AM to 6 PM in JST is 10:30 AM to 7:30 PM in ACST.
- 9 AM to 6 PM in ACST is 7:30 AM to 4:30 PM in JST.
Based on today's clock settings.
Frequently asked questions
What is the time difference between JST and ACST?
ACST is 1 hour 30 minutes ahead of JST right now. The gap is not fixed: it is 30 minutes at some times of the year and 1 hour 30 minutes at others, because at least one of them changes its clocks for daylight saving time.
How do I convert JST to ACST?
Add 1 hour 30 minutes to the JST time to get the ACST time (at today's difference). 9:00 AM in JST is 10:30 AM in ACST. Or use the converter above and pick any date and time.
What is the current time in ACST?
It is 10:29 AM in ACST on Tuesday, November 10 (the converter above shows it live). At the same moment it is 8:59 AM in JST.
Does the time difference between JST and ACST change during the year?
Yes. Right now ACST is 1 hour 30 minutes ahead of JST. Over the next 12 months the gap changes 2 times: Sunday, 4 April 2027: ACST moves its clocks back. ACST is 30 minutes ahead of JST from then (it was 1 hour 30 minutes before). Sunday, 3 October 2027: ACST moves its clocks forward. ACST is 1 hour 30 minutes ahead of JST from then (it was 30 minutes before).
What is the best time for a meeting between JST and ACST?
Between 9 AM and 6 PM in both places you can meet at 9:00 AM – 5:00 PM JST = 10:30 AM – 6:30 PM ACST. Check the overlap section on this page for every option.