AST to CDT Converter
CDT is 1 hour behind AST. When it is 9:00 AM in AST, it is 8:00 AM in CDT.
Most places that use CDT are currently on CST (UTC−6) until Sun, Mar 14, 2027. Chicago is currently UTC−6.
Convert AST to CDT
Live- AST2:27 AMThu, Nov 5
- CDT1:27 AMThu, Nov 5
Thursday, November 5, 2026
AST to CDT time table
| AST | CDT |
|---|---|
| 12:00 AM | 11:00 PMprevious day |
| 1:00 AM | 12:00 AM |
| 2:00 AM | 1:00 AM |
| 3:00 AM | 2:00 AM |
| 4:00 AM | 3:00 AM |
| 5:00 AM | 4:00 AM |
| 6:00 AM | 5:00 AM |
| 7:00 AM | 6:00 AM |
| 8:00 AM | 7:00 AM |
| 9:00 AM | 8:00 AM |
| 10:00 AM | 9:00 AM |
| 11:00 AM | 10:00 AM |
| 12:00 PM | 11:00 AM |
| 1:00 PM | 12:00 PM |
| 2:00 PM | 1:00 PM |
| 3:00 PM | 2:00 PM |
| 4:00 PM | 3:00 PM |
| 5:00 PM | 4:00 PM |
| 6:00 PM | 5:00 PM |
| 7:00 PM | 6:00 PM |
| 8:00 PM | 7:00 PM |
| 9:00 PM | 8:00 PM |
| 10:00 PM | 9:00 PM |
| 11:00 PM | 10:00 PM |
Best time for a meeting
The best time to meet is 10:00 AM–5:00 PM in AST (9:00 AM–4:00 PM in CDT), when both are within 9 AM–5 PM working hours.
Daylight saving changes
AST and CDT are fixed UTC offsets, so the difference between them never changes.