IST to HST Converter

HST is 15h 30m behind IST. When it's 12:00 PM IST, it's 8:30 PM (−1 day) HST.

From

IST · UTC+5:30

9:39:51AM

India Standard Time

e.g. Kolkata

To

HST · UTC-10

6:09:51PM

Hawaii Standard Time

e.g. Honolulu

Open in World ClockHST → IST
9:00 AM IST=5:30 PM(−1 day) HST
12:00 PM IST=8:30 PM(−1 day) HST
5:00 PM IST=1:30 AM HST

Hourly conversion (IST → HST)

ISTHST
12:00 AM8:30 AM(−1 day)
1:00 AM9:30 AM(−1 day)
2:00 AM10:30 AM(−1 day)
3:00 AM11:30 AM(−1 day)
4:00 AM12:30 PM(−1 day)
5:00 AM1:30 PM(−1 day)
6:00 AM2:30 PM(−1 day)
7:00 AM3:30 PM(−1 day)
8:00 AM4:30 PM(−1 day)
9:00 AM5:30 PM(−1 day)
10:00 AM6:30 PM(−1 day)
11:00 AM7:30 PM(−1 day)
12:00 PM8:30 PM(−1 day)
1:00 PM9:30 PM(−1 day)
2:00 PM10:30 PM(−1 day)
3:00 PM11:30 PM(−1 day)
4:00 PM12:30 AM
5:00 PM1:30 AM
6:00 PM2:30 AM
7:00 PM3:30 AM
8:00 PM4:30 AM
9:00 PM5:30 AM
10:00 PM6:30 AM
11:00 PM7:30 AM

Shaded rows are within standard working hours (8am–6pm) on both sides.

IST here is India Standard Time (UTC+5:30). It can also mean Irish Standard Time or Israel Standard Time.

Hawaii does not observe daylight saving time, so HST (UTC−10) applies year-round.

More IST conversions

Frequently asked questions

What is the time difference between IST and HST?
HST is 15h 30m behind IST. IST is UTC+5:30 and HST is UTC-10.
What is 12:00 PM IST in HST?
12:00 PM IST is 8:30 PM (−1 day) HST.
Does IST change for daylight saving time?
IST here is India Standard Time (UTC+5:30). It can also mean Irish Standard Time or Israel Standard Time.