IST to Hawaii time conversion
Hawaii is 15 hours 30 minutes behind IST.
Time difference with your location
IST is 5 hours 30 minutes ahead of UTC. Compare with your local time →
Choose a date and time
Choose the local time in IST to convert it to Hawaii on that date.
Skipped clock-change times are unavailable; a repeated time uses its first occurrence.
24-hour conversion chart · IST → Hawaii
This table converts each hour in IST to Hawaii on 2026-10-21.
- Working hours
- Outside working hours
- Night hours
| IST | Hawaii | Shared working hours |
|---|---|---|
| 00:0012:00 AM | 08:308:30 AM -1 day | |
| 01:001:00 AM | 09:309:30 AM -1 day | |
| 02:002:00 AM | 10:3010:30 AM -1 day | |
| 03:003:00 AM | 11:3011:30 AM -1 day | |
| 04:004:00 AM | 12:3012:30 PM -1 day | |
| 05:005:00 AM | 13:301:30 PM -1 day | |
| 06:006:00 AM | 14:302:30 PM -1 day | |
| 07:007:00 AM | 15:303:30 PM -1 day | |
| 08:008:00 AM | 16:304:30 PM -1 day | ✓ |
| 09:009:00 AM | 17:305:30 PM -1 day | ✓ |
| 10:0010:00 AM | 18:306:30 PM -1 day | |
| 11:0011:00 AM | 19:307:30 PM -1 day | |
| 12:0012:00 PM | 20:308:30 PM -1 day | |
| 13:001:00 PM | 21:309:30 PM -1 day | |
| 14:002:00 PM | 22:3010:30 PM -1 day | |
| 15:003:00 PM | 23:3011:30 PM -1 day | |
| 16:004:00 PM | 00:3012:30 AM | |
| 17:005:00 PM | 01:301:30 AM | |
| 18:006:00 PM | 02:302:30 AM | |
| 19:007:00 PM | 03:303:30 AM | |
| 20:008:00 PM | 04:304:30 AM | |
| 21:009:00 PM | 05:305:30 AM | |
| 22:0010:00 PM | 06:306:30 AM | |
| 23:0011:00 PM | 07:307:30 AM |
Quick conversion examples
These examples use IST (UTC+5:30) and Hawaii (UTC-10); choosing a date applies the local clock changes.
Conversion formula: Hawaii = IST − 15h30.
| IST | Hawaii |
|---|---|
| 6:00 AM IST | = 2:30 PM Hawaii (-1 day) |
| 7:00 AM IST | = 3:30 PM Hawaii (-1 day) |
| 8:00 AM IST | = 4:30 PM Hawaii (-1 day) |
| 9:00 AM IST | = 5:30 PM Hawaii (-1 day) |
| 10:00 AM IST | = 6:30 PM Hawaii (-1 day) |
| 12:00 PM IST | = 8:30 PM Hawaii (-1 day) |
| 3:00 PM IST | = 11:30 PM Hawaii (-1 day) |
| 5:00 PM IST | = 1:30 AM Hawaii |
| 6:00 PM IST | = 2:30 AM Hawaii |
| 8:00 PM IST | = 4:30 AM Hawaii |
Overlapping meeting hours
The 08:00–18:00 working day in IST and Hawaii overlaps for 1 hour 30 minutes on 2026-10-21.
- Shared working hours
- 08:00–09:30 IST · 16:30–18:00 Hawaii
Clock changes on both sides, 2026–2028
IST and Hawaii have the following local clock changes in 2026–2028; all times in the table are local to that side.
| Year | IST | Hawaii |
|---|---|---|
| 2026 | No clock changes; UTC+5:30 all year. | No clock changes; UTC-10 all year. |
| 2027 | No clock changes; UTC+5:30 all year. | No clock changes; UTC-10 all year. |
| 2028 | No clock changes; UTC+5:30 all year. | No clock changes; UTC-10 all year. |
The difference between IST and Hawaii stays constant throughout 2026–2028: Hawaii is 15 hours 30 minutes behind IST.
Frequently asked questions
What time is 9 AM IST in Hawaii?
9:00 AM IST = 5:30 PM Hawaii (-1 day), using UTC+5:30 and UTC-10. Choose a date above for the seasonal local time.
Does the time difference between IST and Hawaii change during the year?
No. Throughout 2026–2028: Hawaii is 15 hours 30 minutes behind IST.
How do I tell whether it is day or night in Hawaii?
Read the Hawaii clock above: this guide counts 06:00–18:00 local time as daytime and the rest as nighttime, without using sunrise and sunset.
What is the best time to call between IST and Hawaii?
The shared 08:00–18:00 working window is 08:00–09:30 IST / 16:30–18:00 Hawaii, a total of 1 hour 30 minutes.
What is the time difference between IST and Hawaii now?
Right now, Hawaii is 15 hours 30 minutes behind IST. Conversion formula: Hawaii = IST − 15h30.