CST to AEST Converter
Convert time between Central Standard Time (CST) and Australian Eastern Time (AEST/AEDT).
Convert a specific time
- IndiaIST, UTC+5:30
- Eastern Time – New YorkEDT, UTC-4
- Central Time – ChicagoCDT, UTC-5
- Mountain Time – DenverMDT, UTC-6
- Arizona – PhoenixMST, UTC-7
- Pacific Time – Los AngelesPDT, UTC-7
- Mexico CityCST, UTC-6
- Saskatchewan – ReginaCST, UTC-6
- UTC / GMTUTC, UTC+0
- United Kingdom – LondonBST, UTC+1
- Central Europe – Paris, BerlinCEST, UTC+2
- Gulf – DubaiGST, UTC+4
- SingaporeSGT, UTC+8
- Japan – TokyoJST, UTC+9
- Australia Eastern – SydneyAEST, UTC+10
- EST (always UTC-5)Fixed offset, no DST
- CST (always UTC-6)Fixed offset, no DST
- MST (always UTC-7)Fixed offset, no DST
- PST (always UTC-8)Fixed offset, no DST
- IndiaIST, UTC+5:30
- Eastern Time – New YorkEDT, UTC-4
- Central Time – ChicagoCDT, UTC-5
- Mountain Time – DenverMDT, UTC-6
- Arizona – PhoenixMST, UTC-7
- Pacific Time – Los AngelesPDT, UTC-7
- Mexico CityCST, UTC-6
- Saskatchewan – ReginaCST, UTC-6
- UTC / GMTUTC, UTC+0
- United Kingdom – LondonBST, UTC+1
- Central Europe – Paris, BerlinCEST, UTC+2
- Gulf – DubaiGST, UTC+4
- SingaporeSGT, UTC+8
- Japan – TokyoJST, UTC+9
- Australia Eastern – SydneyAEST, UTC+10
- EST (always UTC-5)Fixed offset, no DST
- CST (always UTC-6)Fixed offset, no DST
- MST (always UTC-7)Fixed offset, no DST
- PST (always UTC-8)Fixed offset, no DST
Time Difference
Central Time is 15 hours behind Australian Eastern Time right now.
- Now until Oct 4, 2026: Central Time is 15 hours behind Australian Eastern Time (CDT → AEST).
- Oct 4, 2026 – Nov 1, 2026: Central Time is 16 hours behind Australian Eastern Time (CDT → AEDT).
- Nov 1, 2026 – Mar 14, 2027: Central Time is 17 hours behind Australian Eastern Time (CST → AEDT).
- Mar 14, 2027 – Apr 4, 2027: Central Time is 16 hours behind Australian Eastern Time (CDT → AEDT).
- From Apr 4, 2027: Central Time is 15 hours behind Australian Eastern Time (CDT → AEST).
Central Time is on CDT right now, not CST
Australian Eastern Time is on AEST right now
Best time to call
Convenient overlapping hours on Sunday, September 20, 2026.
| CST (Central Time) | AEST (Australian Eastern Time) |
|---|---|
| 4:00 PM | 7:00 AM |
| 6:00 PM | 9:00 AM |
| 7:00 PM | 10:00 AM |
| 8:00 PM | 11:00 AM |
No 9 AM–5 PM overlap: suggestions are within working hours on one side and between 7 AM and 10 PM on the other.
Convert another time zone Plan a meeting across CST and AESTCST to AEST conversion table
For Saturday, September 19, 2026 in Central Time.
| CDT | AEST |
|---|---|
| 12:00 AM | 3:00 PM |
| 1:00 AM | 4:00 PM |
| 2:00 AM | 5:00 PM |
| 3:00 AM | 6:00 PM |
| 4:00 AM | 7:00 PM |
| 5:00 AM | 8:00 PM |
| 6:00 AM | 9:00 PM |
| 7:00 AM | 10:00 PM |
| 8:00 AM | 11:00 PM |
| 9:00 AM | 12:00 AM(next day) |
| 10:00 AM | 1:00 AM(next day) |
| 11:00 AM | 2:00 AM(next day) |
| 12:00 PM | 3:00 AM(next day) |
| 1:00 PM | 4:00 AM(next day) |
| 2:00 PM | 5:00 AM(next day) |
| 3:00 PM | 6:00 AM(next day) |
| 4:00 PM | 7:00 AM(next day) |
| 5:00 PM | 8:00 AM(next day) |
| 6:00 PM | 9:00 AM(next day) |
| 7:00 PM | 10:00 AM(next day) |
| 8:00 PM | 11:00 AM(next day) |
| 9:00 PM | 12:00 PM(next day) |
| 10:00 PM | 1:00 PM(next day) |
| 11:00 PM | 2:00 PM(next day) |
About these time zones
Central Standard Time (CST)
Central Standard Time (CST) is UTC-6. Most of the central United States and Manitoba use CST only in winter and switch to Central Daylight Time (CDT, UTC-5) from the second Sunday in March to the first Sunday in November. Most of Saskatchewan, most of Mexico and much of Central America stay on CST all year.
Australian Eastern Standard Time (AEST)
Australian Eastern Standard Time (AEST) is UTC+10. New South Wales, Victoria, Tasmania and the ACT use AEST in winter and Australian Eastern Daylight Time (AEDT, UTC+11) from the first Sunday in October to the first Sunday in April. Queensland stays on AEST all year.
CST to AEST FAQs
What time is it in AEST when it is 9 AM CST?
On Saturday, September 19, 2026, 9:00 AM CDT is 12:00 AM AEST (next day) in Australian Eastern Time.
How many hours ahead is CST from AEST?
It depends on the time of year because of daylight saving time. Now until Oct 4, 2026: Central Time is 15 hours behind Australian Eastern Time (CDT → AEST). Oct 4, 2026 – Nov 1, 2026: Central Time is 16 hours behind Australian Eastern Time (CDT → AEDT).
Should I use AEST or AEDT?
Australian Eastern Time is on AEST (UTC+10) on Sunday, September 20, 2026. Many people write “AEST” all year, but strictly AEST means Australian Eastern Standard Time (always UTC+10). This converter follows the real local time in Australian Eastern Time, including daylight saving time.
What is the best time for a call between CST and AEST?
On Sunday, September 20, 2026, good options are 4:00 PM CDT (7:00 AM AEST), 6:00 PM CDT (9:00 AM AEST), 7:00 PM CDT (10:00 AM AEST), 8:00 PM CDT (11:00 AM AEST). There is no overlap of 9 AM–5 PM working hours, so these fall early or late for one side.
Does CST change for daylight saving time?
The region changes: Central Time switches between CST and CDT, so conversions depend on the date. CST itself always means UTC-6.
Does AEST change for daylight saving time?
The region changes: Australian Eastern Time switches between AEST and AEDT, so conversions depend on the date. AEST itself always means UTC+10.