What is JST in IST?
India Standard Time is 3 hours 30 minutes behind
Japan Standard Time is on UTC+9:00 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 Tokyo
- 11:56 am
- Time in New Delhi
- 8:26 am
- Difference
- −3:30 h
- Next clock change
- Neither zone
Convert a time
IST — India Standard Time
7:30 am
Wed
Daylight saving
Japan Standard Time
Japan Standard Time stays on JST 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.
JST to IST conversion table
Every hour of Wednesday, September 23, 2026, converted from Japan Standard Time to India Standard Time. 4 of the 24 hours fall on a different calendar day in New Delhi, which is marked.
- 12:00 am JST
- 8:30 pm IST−1 day
- 1:00 am JST
- 9:30 pm IST−1 day
- 2:00 am JST
- 10:30 pm IST−1 day
- 3:00 am JST
- 11:30 pm IST−1 day
- 4:00 am JST
- 12:30 am IST
- 5:00 am JST
- 1:30 am IST
- 6:00 am JST
- 2:30 am IST
- 7:00 am JST
- 3:30 am IST
- 8:00 am JST
- 4:30 am IST
- 9:00 am JST
- 5:30 am IST
- 10:00 am JST
- 6:30 am IST
- 11:00 am JST
- 7:30 am IST
- 12:00 pm JST
- 8:30 am IST
- 1:00 pm JST
- 9:30 am IST
- 2:00 pm JST
- 10:30 am IST
- 3:00 pm JST
- 11:30 am IST
- 4:00 pm JST
- 12:30 pm IST
- 5:00 pm JST
- 1:30 pm IST
- 6:00 pm JST
- 2:30 pm IST
- 7:00 pm JST
- 3:30 pm IST
- 8:00 pm JST
- 4:30 pm IST
- 9:00 pm JST
- 5:30 pm IST
- 10:00 pm JST
- 6:30 pm IST
- 11:00 pm JST
- 7:30 pm IST
Scheduling between the two
Working hours overlap from 1:00 pm to 6:00 pm JST, which is 9:30 am to 2:30 pm IST. 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