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DateAlmanac

What is HST in IST?

India Standard Time is 15 hours 30 minutes ahead

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

Convert a time

IST — India Standard Time

1:30 pm

IST, Sat, the next day

Time in Honolulu
10:30:00 PM
Time in New Delhi
2:00:00 PM
Difference
+15:30 h
Next clock change
Neither zone

Daylight saving

Hawaii Standard Time

No clock changes

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

India Standard Time

No clock changes

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

HST to IST conversion table

Every hour of Friday, November 6, 2026, converted from Hawaii Standard Time to India Standard Time. 15 of the 24 hours fall on a different calendar day in New Delhi, which is marked.

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

Scheduling between the two

There is no overlap between a nine-to-six working day in Honolulu and one in New Delhi — the gap is too wide. A call has to sit early or late for one side. Early morning in Honolulu is the usual compromise, since that is late afternoon or evening in New Delhi.

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.

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

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

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