IST to CLT/CLST time converter
CLT/CLST is 8 hours 30 minutes behind IST. When it is 9:00 AM in IST, it is 12:30 AM in CLT/CLST.
3:42 AM in IST, Saturday, October 17, 2026
IST to CLT/CLST conversion table
Every hour of today in IST and the matching time in CLT/CLST. Light rows are typical working hours (9:00–18:00).
| IST | CLT/CLST |
|---|---|
| 12:00 AM | 3:30 PM−1 day |
| 1:00 AM | 4:30 PM−1 day |
| 2:00 AM | 5:30 PM−1 day |
| 3:00 AM | 6:30 PM−1 day |
| 4:00 AM | 7:30 PM−1 day |
| 5:00 AM | 8:30 PM−1 day |
| 6:00 AM | 9:30 PM−1 day |
| 7:00 AM | 10:30 PM−1 day |
| 8:00 AM | 11:30 PM−1 day |
| 9:00 AM | 12:30 AM |
| 10:00 AM | 1:30 AM |
| 11:00 AM | 2:30 AM |
| 12:00 PM | 3:30 AM |
| 1:00 PM | 4:30 AM |
| 2:00 PM | 5:30 AM |
| 3:00 PM | 6:30 AM |
| 4:00 PM | 7:30 AM |
| 5:00 PM | 8:30 AM |
| 6:00 PM | 9:30 AM |
| 7:00 PM | 10:30 AM |
| 8:00 PM | 11:30 AM |
| 9:00 PM | 12:30 PM |
| 10:00 PM | 1:30 PM |
| 11:00 PM | 2:30 PM |
Best time to call or meet
Working hours don't overlap fully. The closest fit is 3:30 PM – 10:00 PM in IST (7:00 AM – 1:30 PM in CLT/CLST): working hours on one side, early or late on the other.
Daylight saving time and the difference
The difference changes during the year because IST and CLT/CLST switch clocks on different dates:
- Oct 17, 2026 – Apr 4, 2027: -8h 30m
- Apr 4, 2027 – Sep 5, 2027: -9h 30m
- Sep 5, 2027 – Oct 17, 2027: -8h 30m
More conversions
Questions and answers
What is the time difference between IST and CLT/CLST?
CLT/CLST is 8 hours 30 minutes behind IST.
What time is it in CLT/CLST when it is 9 AM in IST?
When it is 9:00 AM in IST, it is 12:30 AM in CLT/CLST.
When is the best time to call CLT/CLST from IST?
Working hours don't overlap fully. The closest fit is 3:30 PM – 10:00 PM in IST (7:00 AM – 1:30 PM in CLT/CLST): working hours on one side, early or late on the other.
Does the time difference between IST and CLT/CLST change?
Yes, for part of the year, because daylight saving time starts and ends on different dates or applies on one side only.