ICT to IST Converter
IST is 1 hour 30 minutes behind ICT. 9:00 AM ICT = 7:30 AM IST.
IST is 1 hour 30 minutes behind ICT. To convert ICT to IST, subtract 1 hour 30 minutes from the ICT time: 9:00 AM ICT = 7:30 AM IST.
ICT (Indochina Time) is used in Thailand, Vietnam, Cambodia, Laos. IST (India Time) is used in India and Sri Lanka (UTC+5:30, no daylight saving time).
IST here means India Standard Time, not Irish or Israel Standard Time.
ICT to IST time conversion table
ICT to IST on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| ICT | IST | Day |
|---|---|---|
| 12:00 AM ICT | 10:30 PM IST | previous day |
| 1:00 AM ICT | 11:30 PM IST | previous day |
| 2:00 AM ICT | 12:30 AM IST | night |
| 3:00 AM ICT | 1:30 AM IST | night |
| 4:00 AM ICT | 2:30 AM IST | night |
| 5:00 AM ICT | 3:30 AM IST | night |
| 6:00 AM ICT | 4:30 AM IST | night |
| 7:00 AM ICT | 5:30 AM IST | night |
| 8:00 AM ICT | 6:30 AM IST | — |
| 9:00 AM ICT | 7:30 AM IST | — |
| 10:00 AM ICT | 8:30 AM IST | — |
| 11:00 AM ICT | 9:30 AM IST | work hours |
| 12:00 PM ICT | 10:30 AM IST | work hours |
| 1:00 PM ICT | 11:30 AM IST | work hours |
| 2:00 PM ICT | 12:30 PM IST | work hours |
| 3:00 PM ICT | 1:30 PM IST | work hours |
| 4:00 PM ICT | 2:30 PM IST | work hours |
| 5:00 PM ICT | 3:30 PM IST | — |
| 6:00 PM ICT | 4:30 PM IST | — |
| 7:00 PM ICT | 5:30 PM IST | — |
| 8:00 PM ICT | 6:30 PM IST | — |
| 9:00 PM ICT | 7:30 PM IST | — |
| 10:00 PM ICT | 8:30 PM IST | — |
| 11:00 PM ICT | 9:30 PM IST | — |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert ICT to IST
Subtract 1 hour 30 minutes from the ICT time to get IST.
Example: 9:00 AM ICT = 7:30 AM IST.
Across midnight: 1:00 AM ICT = 11:30 PM IST (previous day). The date changes, so always check the day as well as the hour.
Time difference between ICT and IST
The time difference between ICT and IST is 1 hour 30 minutes all year – IST is behind ICT.
ICT and IST during daylight saving time
- ICT does not observe daylight saving time; it stays on UTC+7 all year.
- IST does not observe daylight saving time; it stays on UTC+5:30 all year.
Best time for a meeting between ICT and IST
ICT and IST share 6 hours 30 minutes of the 9 AM–5 PM working day. Any time between 10:30 AM and 5:00 PM ICT lands between 9:00 AM and 3:30 PM IST, inside working hours for both.
ICT to IST FAQ
What is the time difference between ICT and IST?
IST is 1 hour 30 minutes behind ICT all year. 9:00 AM ICT = 7:30 AM IST.
What is 9 AM ICT in IST?
9:00 AM ICT is 7:30 AM IST.
What is 12 PM (noon) ICT in IST?
12:00 PM ICT is 10:30 AM IST.
Is IST ahead of or behind ICT?
IST is 1 hour 30 minutes behind ICT, so it is earlier in IST than in ICT.
Does ICT change for daylight saving time?
No. ICT stays on the same offset all year, so conversions never shift for daylight saving time.
Does IST change for daylight saving time?
No. IST stays on the same offset all year, so conversions never shift for daylight saving time.
What is the best time for a meeting between ICT and IST?
ICT and IST share 6 hours 30 minutes of the 9 AM–5 PM working day. Any time between 10:30 AM and 5:00 PM ICT lands between 9:00 AM and 3:30 PM IST, inside working hours for both.
Related conversions
Convert IST to ICT
Convert ICT to other time zones
Convert other time zones to IST
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.