HST to IST time converter

IST is 15 hours 30 minutes ahead of HST. When it is 9:00 AM in HST, it is 12:30 AM (Sat, Oct 17) in IST.

HST UTC-10

Friday, October 16, 2026

IST UTC+5:30

Saturday, October 17, 2026

HST
Hawaii-Aleutian Standard Time
Fri, Oct 16
UTC-10
IST
India Standard Time
Sat, Oct 17
UTC+5:30+15h 30m
Finding your time zone…
Shared working hours (9:00–18:00)

HST to IST conversion table

Every hour of today in HST and the matching time in IST. Light rows are typical working hours (9:00–18:00).

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

Best time to call or meet

Working hours don't overlap fully. The closest fit is 3:30 PM – 10:00 PM in HST (7:00 AM – 1:30 PM in IST): working hours on one side, early or late on the other.

Daylight saving time and the difference

The difference stays 15 hours 30 minutes all year.

More conversions

IST to HSTHST to UTCHST to GMTHST to ESTHST to CSTHST to MSTHST to PSTHST to CETHST to MSKHST to GSTHST to PKTHST to SGTHST to PHT
UTC to ISTGMT to ISTEST to ISTCST to ISTMST to ISTPST to ISTCET to ISTMSK to ISTGST to ISTPKT to ISTSGT to ISTPHT to IST

Questions and answers

What is the time difference between HST and IST?

IST is 15 hours 30 minutes ahead of HST.

What time is it in IST when it is 9 AM in HST?

When it is 9:00 AM in HST, it is 12:30 AM (Sat, Oct 17) in IST.

When is the best time to call IST from HST?

Working hours don't overlap fully. The closest fit is 3:30 PM – 10:00 PM in HST (7:00 AM – 1:30 PM in IST): working hours on one side, early or late on the other.

Does the time difference between HST and IST change?

No. The difference stays 15 hours 30 minutes all year.