CST to AST Time Converter
CST
08:15 AM
AST
10:15 AM
10 May 2026
CST
The CST (Central Standard Time) is a time zone used in North America , predominantly in the central portions of the United States and Canada, along with some areas of Mexico and Central America . It is 6 hours under Coordinated Universal Time (UTC−6). The normal time period of observation of CST is in the early months of November to mid-March. check the CST Time Now..
AST
AST (Atlantic Standard Time) is 4 hours behind Coordinated Universal Time ( UTC-3:30), used. In sections of North America and the Caribbean. Most of the Caribbean islands remain on AST throughout the year, but Canadian provinces such as Nova Scotia and New Brunswick change to Atlantic Daylight Time (ADT, UTC-3) in summer. Check the AST Time Now.
CST to AST Chart
| CST Time | AST Time |
|---|---|
| 12:00 AM | 02:00 AM |
| 01:00 AM | 03:00 AM |
| 02:00 AM | 04:00 AM |
| 03:00 AM | 05:00 AM |
| 04:00 AM | 06:00 AM |
| 05:00 AM | 07:00 AM |
| 06:00 AM | 08:00 AM |
| 07:00 AM | 09:00 AM |
| 08:00 AM | 10:00 AM |
| 09:00 AM | 11:00 AM |
| 10:00 AM | 12:00 PM |
| 11:00 AM | 01:00 PM |
| 12:00 PM | 02:00 PM |
| 01:00 PM | 03:00 PM |
| 02:00 PM | 04:00 PM |
| 03:00 PM | 05:00 PM |
| 04:00 PM | 06:00 PM |
| 05:00 PM | 07:00 PM |
| 06:00 PM | 08:00 PM |
| 07:00 PM | 09:00 PM |
| 08:00 PM | 10:00 PM |
| 09:00 PM | 11:00 PM |
| 10:00 PM | 12:00 AM |
| 11:00 PM | 01:00 AM |