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DateAlmanac

What is IST in HST?

Hawaii Standard Time is 15 hours 30 minutes behind

India Standard Time is on UTC+5:30 and Hawaii Standard Time is on UTC−10:00 right now. That gap holds all year, because neither zone observes daylight saving.

Convert a time

HST — Hawaii Standard Time

9:30 pm

HST, Fri, the previous day

Time in New Delhi
1:59:56 PM
Time in Honolulu
10:29:56 PM
Difference
−15:30 h
Next clock change
Neither zone

Daylight saving

India Standard Time

No clock changes

India Standard Time stays on IST all year, so its offset from UTC never moves.

Hawaii Standard Time

No clock changes

Hawaii Standard Time stays on HST all year, so its offset from UTC never moves.

IST to HST conversion table

Every hour of Saturday, November 7, 2026, converted from India Standard Time to Hawaii Standard Time. 16 of the 24 hours fall on a different calendar day in Honolulu, which is marked.

12:00 am IST
8:30 am HST−1 day
1:00 am IST
9:30 am HST−1 day
2:00 am IST
10:30 am HST−1 day
3:00 am IST
11:30 am HST−1 day
4:00 am IST
12:30 pm HST−1 day
5:00 am IST
1:30 pm HST−1 day
6:00 am IST
2:30 pm HST−1 day
7:00 am IST
3:30 pm HST−1 day
8:00 am IST
4:30 pm HST−1 day
9:00 am IST
5:30 pm HST−1 day
10:00 am IST
6:30 pm HST−1 day
11:00 am IST
7:30 pm HST−1 day
12:00 pm IST
8:30 pm HST−1 day
1:00 pm IST
9:30 pm HST−1 day
2:00 pm IST
10:30 pm HST−1 day
3:00 pm IST
11:30 pm HST−1 day
4:00 pm IST
12:30 am HST
5:00 pm IST
1:30 am HST
6:00 pm IST
2:30 am HST
7:00 pm IST
3:30 am HST
8:00 pm IST
4:30 am HST
9:00 pm IST
5:30 am HST
10:00 pm IST
6:30 am HST
11:00 pm IST
7:30 am HST

Scheduling between the two

Working hours overlap from 9:00 am to 10:00 am IST, which is 5:30 pm to 6:30 pm HST. Anything inside that window falls in the normal working day at both ends.

A note on IST: it can also mean Israel Standard Time (UTC+2) and Irish Standard Time (UTC+1). This page means India Standard Time, which is what almost all searches for IST want.

India Standard Time (IST) is used in all of India and Sri Lanka, on a single UTC+5:30 offset with no daylight saving

Hawaii Standard Time (HST) is used in all of Hawaii, which does not observe daylight saving

Other conversions