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 both zones change their clocks together.
- Time in Honolulu
- 4:14 pm
- Time in New Delhi
- 7:44 am
- Difference
- +15:30 h
- Next clock change
- Neither zone
Convert a time
IST — India Standard Time
7:30 am
Wed, the next day
Daylight saving
Hawaii Standard Time
Hawaii Standard Time stays on HST all year, so its offset from UTC never moves.
India Standard Time
India Standard Time stays on IST all year, so its offset from UTC never moves.
HST to IST conversion table
Every hour of Tuesday, September 22, 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