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DateAlmanac

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 neither zone observes daylight saving.

Convert a time

IST — India Standard Time

1:30 pm

IST, Sat

Time in Tokyo
5:29:40 PM
Time in New Delhi
1:59:40 PM
Difference
−3:30 h
Next clock change
Neither zone

Daylight saving

Japan Standard Time

No clock changes

Japan Standard Time stays on JST 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.

JST to IST conversion table

Every hour of Saturday, November 7, 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

Other conversions