When it is 12:00 PM in IRST, it is 2:30 AM in CST.
📞There is no overlap during standard 9-to-5 business hours, so a call may need to be early or late in the day for one side.
IRST is 9 hours 30 minutes ahead of CST.
🕐 Subtract 9 hours 30 minutes from IRST time to get CST time.
IRST uses 3 hours 30 minutes ahead of Universal Time (UTC+3) and CST uses 6 hours behind Universal Time (UTC-6).
| IRST Time | CST Time | |
|---|---|---|
| 12 AM IRST Time | ↔ | 2 PM CST Time |
| 1 AM IRST Time | ↔ | 3 PM CST Time |
| 2 AM IRST Time | ↔ | 4 PM CST Time |
| 3 AM IRST Time | ↔ | 5 PM CST Time |
| 4 AM IRST Time | ↔ | 6 PM CST Time |
| 5 AM IRST Time | ↔ | 7 PM CST Time |
| 6 AM IRST Time | ↔ | 8 PM CST Time |
| 7 AM IRST Time | ↔ | 9 PM CST Time |
| 8 AM IRST Time | ↔ | 10 PM CST Time |
| 9 AM IRST Time | ↔ | 11 PM CST Time |
| 10 AM IRST Time | ↔ | 12 AM CST Time |
| 11 AM IRST Time | ↔ | 1 AM CST Time |
| IRST Time | CST Time | |
|---|---|---|
| 12 PM IRST Time | ↔ | 2 AM CST Time |
| 1 PM IRST Time | ↔ | 3 AM CST Time |
| 2 PM IRST Time | ↔ | 4 AM CST Time |
| 3 PM IRST Time | ↔ | 5 AM CST Time |
| 4 PM IRST Time | ↔ | 6 AM CST Time |
| 5 PM IRST Time | ↔ | 7 AM CST Time |
| 6 PM IRST Time | ↔ | 8 AM CST Time |
| 7 PM IRST Time | ↔ | 9 AM CST Time |
| 8 PM IRST Time | ↔ | 10 AM CST Time |
| 9 PM IRST Time | ↔ | 11 AM CST Time |
| 10 PM IRST Time | ↔ | 12 PM CST Time |
| 11 PM IRST Time | ↔ | 1 PM CST Time |
IRST is 9 hours 30 minutes ahead of CST.
IRST is ahead of CST by 9 hours 30 minutes.
It is 11:30 PM the previous day in CST.