IST to CHST
Converting a fixed time. Asia/Kolkata → Pacific/Guam
5:00 pm in IST is
9:30 pm in CHST.
17:00 → 21:30 on a 24-hour clock ·
IST → ChST
IST now
11:44pm
IST · UTC+5:30
Asia/Kolkata
Clocks here do not change — this zone stays on the same offset all year.
CHST now
4:14am
ChST · UTC+10
Pacific/Guam
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 | CHST | 24h | Good to call? |
|---|---|---|---|
| 12am | 4am | 00:00 → 04:30 | asleep in CHST |
| 1am | 5am | 01:00 → 05:30 | asleep in CHST |
| 2am | 6am | 02:00 → 06:30 | asleep in CHST |
| 3am | 7am | 03:00 → 07:30 | asleep in IST |
| 4am | 8am | 04:00 → 08:30 | asleep in IST |
| 5am | 9am | 05:00 → 09:30 | asleep in IST |
| 6am | 10am | 06:00 → 10:30 | asleep in IST |
| 7am | 11am | 07:00 → 11:30 | awake, not at work |
| 8am | 12pm | 08:00 → 12:30 | awake, not at work |
| 9am | 1pm | 09:00 → 13:30 | both at work |
| 10am | 2pm | 10:00 → 14:30 | both at work |
| 11am | 3pm | 11:00 → 15:30 | both at work |
| 12pm | 4pm | 12:00 → 16:30 | both at work |
| 1pm | 5pm | 13:00 → 17:30 | awake, not at work |
| 2pm | 6pm | 14:00 → 18:30 | awake, not at work |
| 3pm | 7pm | 15:00 → 19:30 | awake, not at work |
| 4pm | 8pm | 16:00 → 20:30 | awake, not at work |
| 5pm | 9pm | 17:00 → 21:30 | awake, not at work |
| 6pm | 10pm | 18:00 → 22:30 | asleep in CHST |
| 7pm | 11pm | 19:00 → 23:30 | asleep in CHST |
| 8pm | 12am Fri | 20:00 → 00:30 | asleep in CHST |
| 9pm | 1am Fri | 21:00 → 01:30 | asleep in CHST |
| 10pm | 2am Fri | 22:00 → 02:30 | asleep in CHST |
| 11pm now | 3am Fri | 23:00 → 03:30 | asleep in CHST |
Call times
Both places are at work between 9am and 13:00 in Kolkata — 1pm to 4pm at the other end.
12am
4am
4am
1am
5am
5am
2am
6am
6am
3am
7am
7am
4am
8am
8am
5am
9am
9am
6am
10am
10am
7am
11am
11am
8am
12pm
12pm
9am
1pm
1pm
10am
2pm
2pm
11am
3pm
3pm
12pm
4pm
4pm
1pm
5pm
5pm
2pm
6pm
6pm
3pm
7pm
7pm
4pm
8pm
8pm
5pm
9pm
9pm
6pm
10pm
10pm
7pm
11pm
11pm
8pm
12am
12am
9pm
1am
1am
10pm
2am
2am
11pm
3am
3am
both at work
work hours here
awake
asleep
Questions people ask
What time is it in CHST when it is 5:00 pm in IST?
9:30 pm in CHST the same day.
How many hours ahead is CHST of IST?
CHST is 4 hours 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 CHST?
Both places are at work between 9am and 13:00 in Kolkata — 1pm to 4pm at the other end.