IST to ICT
Converting a fixed time. Asia/Kolkata → Asia/Bangkok
9:00 am in IST is
10:30 am in ICT.
09:00 → 10:30 on a 24-hour clock ·
IST → UTC+7
IST now
5:26am
IST · UTC+5:30
Asia/Kolkata
Clocks here do not change — this zone stays on the same offset all year.
ICT now
6:56am
UTC+7 · UTC+7
Asia/Bangkok
Clocks here do not change — this zone stays on the same offset all year.
Convert a specific time minutes work, not just whole hours
Hour by hour
| IST | ICT | 24h | Good to call? |
|---|---|---|---|
| 12am | 1am | 00:00 → 01:30 | asleep in ICT |
| 1am | 2am | 01:00 → 02:30 | asleep in ICT |
| 2am | 3am | 02:00 → 03:30 | asleep in ICT |
| 3am | 4am | 03:00 → 04:30 | asleep in ICT |
| 4am | 5am | 04:00 → 05:30 | asleep in ICT |
| 5am now | 6am | 05:00 → 06:30 | asleep in ICT |
| 6am | 7am | 06:00 → 07:30 | asleep in IST |
| 7am | 8am | 07:00 → 08:30 | awake, not at work |
| 8am | 9am | 08:00 → 09:30 | awake, not at work |
| 9am | 10am | 09:00 → 10:30 | both at work |
| 10am | 11am | 10:00 → 11:30 | both at work |
| 11am | 12pm | 11:00 → 12:30 | both at work |
| 12pm | 1pm | 12:00 → 13:30 | both at work |
| 1pm | 2pm | 13:00 → 14:30 | both at work |
| 2pm | 3pm | 14:00 → 15:30 | both at work |
| 3pm | 4pm | 15:00 → 16:30 | both at work |
| 4pm | 5pm | 16:00 → 17:30 | awake, not at work |
| 5pm | 6pm | 17:00 → 18:30 | awake, not at work |
| 6pm | 7pm | 18:00 → 19:30 | awake, not at work |
| 7pm | 8pm | 19:00 → 20:30 | awake, not at work |
| 8pm | 9pm | 20:00 → 21:30 | awake, not at work |
| 9pm | 10pm | 21:00 → 22:30 | asleep in ICT |
| 10pm | 11pm | 22:00 → 23:30 | asleep in ICT |
| 11pm | 12am Sat | 23:00 → 00:30 | asleep in ICT |
Call times
Both places are at work between 9am and 16:00 in Kolkata — 10am to 4pm at the other end.
12am
1am
1am
1am
2am
2am
2am
3am
3am
3am
4am
4am
4am
5am
5am
5am
6am
6am
6am
7am
7am
7am
8am
8am
8am
9am
9am
9am
10am
10am
10am
11am
11am
11am
12pm
12pm
12pm
1pm
1pm
1pm
2pm
2pm
2pm
3pm
3pm
3pm
4pm
4pm
4pm
5pm
5pm
5pm
6pm
6pm
6pm
7pm
7pm
7pm
8pm
8pm
8pm
9pm
9pm
9pm
10pm
10pm
10pm
11pm
11pm
11pm
12am
12am
both at work
work hours here
awake
asleep
Questions people ask
What time is it in ICT when it is 9:00 am in IST?
10:30 am in ICT the same day.
How many hours ahead is ICT of IST?
ICT is 1 hour 30 minutes ahead IST. Neither place changes its clocks, so that gap is the same all year. The table on this page is recalculated for today, so it is already correct for the current season.
What is the best time to call between IST and ICT?
Both places are at work between 9am and 16:00 in Kolkata — 10am to 4pm at the other end.