IST to CST: India Standard Time to US Central Time
US Central Time is 10 hours 30 minutes behind IST in summer (CDT, UTC-05:00) and 11 hours 30 minutes behind IST in winter (CST, UTC-06:00). Use the converter above — type a time such as “9am IST to CST”, drag along the hour strips, or pick a date.
IST to CST conversion table
| India Standard Time (IST) | US Central Time — January | US Central Time — July |
|---|---|---|
| 12:00 AM IST | 12:30 PM CST (previous day) | 1:30 PM CDT (previous day) |
| 1:00 AM IST | 1:30 PM CST (previous day) | 2:30 PM CDT (previous day) |
| 2:00 AM IST | 2:30 PM CST (previous day) | 3:30 PM CDT (previous day) |
| 3:00 AM IST | 3:30 PM CST (previous day) | 4:30 PM CDT (previous day) |
| 4:00 AM IST | 4:30 PM CST (previous day) | 5:30 PM CDT (previous day) |
| 5:00 AM IST | 5:30 PM CST (previous day) | 6:30 PM CDT (previous day) |
| 6:00 AM IST | 6:30 PM CST (previous day) | 7:30 PM CDT (previous day) |
| 7:00 AM IST | 7:30 PM CST (previous day) | 8:30 PM CDT (previous day) |
| 8:00 AM IST | 8:30 PM CST (previous day) | 9:30 PM CDT (previous day) |
| 9:00 AM IST | 9:30 PM CST (previous day) | 10:30 PM CDT (previous day) |
| 10:00 AM IST | 10:30 PM CST (previous day) | 11:30 PM CDT (previous day) |
| 11:00 AM IST | 11:30 PM CST (previous day) | 12:30 AM CDT |
| 12:00 PM IST | 12:30 AM CST | 1:30 AM CDT |
| 1:00 PM IST | 1:30 AM CST | 2:30 AM CDT |
| 2:00 PM IST | 2:30 AM CST | 3:30 AM CDT |
| 3:00 PM IST | 3:30 AM CST | 4:30 AM CDT |
| 4:00 PM IST | 4:30 AM CST | 5:30 AM CDT |
| 5:00 PM IST | 5:30 AM CST | 6:30 AM CDT |
| 6:00 PM IST | 6:30 AM CST | 7:30 AM CDT |
| 7:00 PM IST | 7:30 AM CST | 8:30 AM CDT |
| 8:00 PM IST | 8:30 AM CST | 9:30 AM CDT |
| 9:00 PM IST | 9:30 AM CST | 10:30 AM CDT |
| 10:00 PM IST | 10:30 AM CST | 11:30 AM CDT |
| 11:00 PM IST | 11:30 AM CST | 12:30 PM CDT |
Daylight saving
India Standard Time has no daylight saving — it stays at UTC+05:30 all year. US Central Time switches to CDT around March and back to CST around November. Because of this the difference between IST and CST changes during the year — the converter above always uses the right one for the date you pick.
Frequently asked questions
- What is the time difference between IST and CST?
- US Central Time is 10h 30m behind IST in summer (CDT) and 11h 30m behind in winter (CST).
- What is 9 AM IST in CST?
- 9:00 AM IST is 10:30 PM CDT (previous day) in summer and 9:30 PM CST (previous day) in winter.
- Which IST is this?
- Here IST means India Standard Time, used in India (Mumbai, Delhi, Bengaluru). Abbreviations can mean different places — IST is also used for Irish and Israel Standard Time; type a city in the converter if you meant another one.
- Is CST the same as CDT?
- They are the same place in different seasons: CST/CDT — CST in winter and CDT during daylight saving. GlobalHours switches automatically on the right date.