CST to ACST Time Converter
ACST is 16 hours 30 minutes ahead of CST right now. 9:00 AM in CST is 1:30 AM in ACST (next day).
Time now: CST and ACST
ACST is 16 hours 30 minutes ahead of CST right now. The gap is not fixed: it is 14 hours 30 minutes at some times of the year and 16 hours 30 minutes at others, because at least one of them changes its clocks for daylight saving time.
CST to ACST conversion table
Every hour of the day, using today's time difference.
| CST | ACST |
|---|---|
| 12:00 AM | 4:30 PM |
| 1:00 AM | 5:30 PM |
| 2:00 AM | 6:30 PM |
| 3:00 AM | 7:30 PM |
| 4:00 AM | 8:30 PM |
| 5:00 AM | 9:30 PM |
| 6:00 AM | 10:30 PM |
| 7:00 AM | 11:30 PM |
| 8:00 AM | 12:30 AMnext day |
| 9:00 AM | 1:30 AMnext day |
| 10:00 AM | 2:30 AMnext day |
| 11:00 AM | 3:30 AMnext day |
| 12:00 PM | 4:30 AMnext day |
| 1:00 PM | 5:30 AMnext day |
| 2:00 PM | 6:30 AMnext day |
| 3:00 PM | 7:30 AMnext day |
| 4:00 PM | 8:30 AMnext day |
| 5:00 PM | 9:30 AMnext day |
| 6:00 PM | 10:30 AMnext day |
| 7:00 PM | 11:30 AMnext day |
| 8:00 PM | 12:30 PMnext day |
| 9:00 PM | 1:30 PMnext day |
| 10:00 PM | 2:30 PMnext day |
| 11:00 PM | 3:30 PMnext day |
Best time to meet between CST and ACST
Working hours overlap (9 AM – 6 PM in both places):
- 5:00 PM – 6:00 PM CST = 9:30 AM – 10:30 AM 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 CST and ACST change?
Yes. Right now ACST is 16 hours 30 minutes ahead of CST. These are the dates in the next 12 months when the gap changes:
- Sunday, 14 March 2027: CST moves its clocks forward. ACST is 15 hours 30 minutes ahead of CST from then (it was 16 hours 30 minutes before).
- Sunday, 4 April 2027: ACST moves its clocks back. ACST is 14 hours 30 minutes ahead of CST from then (it was 15 hours 30 minutes before).
- Sunday, 3 October 2027: ACST moves its clocks forward. ACST is 15 hours 30 minutes ahead of CST from then (it was 14 hours 30 minutes before).
- Sunday, 7 November 2027: CST moves its clocks back. ACST is 16 hours 30 minutes ahead of CST from then (it was 15 hours 30 minutes before).
Office hours in each other's time
- 9 AM to 6 PM in CST is 1:30 AM (next day) to 10:30 AM (next day) in ACST.
- 9 AM to 6 PM in ACST is 4:30 PM (previous day) to 1:30 AM in CST.
Based on today's clock settings.
Frequently asked questions
What is the time difference between CST and ACST?
ACST is 16 hours 30 minutes ahead of CST right now. The gap is not fixed: it is 14 hours 30 minutes at some times of the year and 16 hours 30 minutes at others, because at least one of them changes its clocks for daylight saving time.
How do I convert CST to ACST?
Add 16 hours 30 minutes to the CST time to get the ACST time (at today's difference). 9:00 AM in CST is 1:30 AM in ACST (next day). Or use the converter above and pick any date and time.
What is the current time in ACST?
It is 10:28 AM in ACST on Tuesday, November 10 (the converter above shows it live). At the same moment it is 5:58 PM in CST.
Does the time difference between CST and ACST change during the year?
Yes. Right now ACST is 16 hours 30 minutes ahead of CST. Over the next 12 months the gap changes 4 times: Sunday, 14 March 2027: CST moves its clocks forward. ACST is 15 hours 30 minutes ahead of CST from then (it was 16 hours 30 minutes before). Sunday, 4 April 2027: ACST moves its clocks back. ACST is 14 hours 30 minutes ahead of CST from then (it was 15 hours 30 minutes before). Sunday, 3 October 2027: ACST moves its clocks forward. ACST is 15 hours 30 minutes ahead of CST from then (it was 14 hours 30 minutes before). Sunday, 7 November 2027: CST moves its clocks back. ACST is 16 hours 30 minutes ahead of CST from then (it was 15 hours 30 minutes before).
What is the best time for a meeting between CST and ACST?
Between 9 AM and 6 PM in both places you can meet at 5:00 PM – 6:00 PM CST = 9:30 AM – 10:30 AM ACST. Check the overlap section on this page for every option.
What does CST mean?
Central Time is CST (UTC-06:00) in winter and CDT (UTC-05:00) in summer.