KST to ACST Time Converter
ACST is 1 hour 30 minutes ahead of KST right now. 9:00 AM in KST is 10:30 AM in ACST.
Time now: KST and ACST
ACST is 1 hour 30 minutes ahead of KST 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.
KST to ACST conversion table
Every hour of the day, using today's time difference.
| KST | 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 KST and ACST
Working hours overlap (9 AM – 6 PM in both places):
- 9:00 AM – 5:00 PM KST = 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 KST and ACST change?
Yes. Right now ACST is 1 hour 30 minutes ahead of KST. 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 KST 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 KST from then (it was 30 minutes before).
Office hours in each other's time
- 9 AM to 6 PM in KST 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 KST.
Based on today's clock settings.
Frequently asked questions
What is the time difference between KST and ACST?
ACST is 1 hour 30 minutes ahead of KST 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 KST to ACST?
Add 1 hour 30 minutes to the KST time to get the ACST time (at today's difference). 9:00 AM in KST 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 KST.
Does the time difference between KST and ACST change during the year?
Yes. Right now ACST is 1 hour 30 minutes ahead of KST. 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 KST 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 KST from then (it was 30 minutes before).
What is the best time for a meeting between KST and ACST?
Between 9 AM and 6 PM in both places you can meet at 9:00 AM – 5:00 PM KST = 10:30 AM – 6:30 PM ACST. Check the overlap section on this page for every option.