IST to JST converter
JST is 3 h 30 min ahead of IST all year.
IST to JST table
For 2 July 2026, when JST is 3 h 30 min ahead of IST. Other dates: see the table on the right.
| IST | JST |
|---|---|
| 12:00 AM | 3:30 AM |
| 1:00 AM | 4:30 AM |
| 2:00 AM | 5:30 AM |
| 3:00 AM | 6:30 AM |
| 4:00 AM | 7:30 AM |
| 5:00 AM | 8:30 AM |
| 6:00 AM | 9:30 AM |
| 7:00 AM | 10:30 AM |
| 8:00 AM | 11:30 AM |
| 9:00 AM | 12:30 PM |
| 10:00 AM | 1:30 PM |
| 11:00 AM | 2:30 PM |
| 12:00 PM | 3:30 PM |
| 1:00 PM | 4:30 PM |
| 2:00 PM | 5:30 PM |
| 3:00 PM | 6:30 PM |
| 4:00 PM | 7:30 PM |
| 5:00 PM | 8:30 PM |
| 6:00 PM | 9:30 PM |
| 7:00 PM | 10:30 PM |
| 8:00 PM | 11:30 PM |
| 9:00 PM | 12:30 AM next day |
| 10:00 PM | 1:30 AM next day |
| 11:00 PM | 2:30 AM next day |
When the difference changes
Computed from the IANA tz database (release 2026c). Governments can change these rules; the live converter uses your browser’s own copy of the database.
| 2026: from (UTC) | until (UTC) | JST vs IST |
|---|---|---|
| 1 January 2026 | 31 December 2026 | 3 h 30 min ahead of |
| 2027: from (UTC) | until (UTC) | JST vs IST |
|---|---|---|
| 1 January 2027 | 31 December 2027 | 3 h 30 min ahead of |
IST: India Standard Time · IST time now
IST can also mean Irish Standard Time or Israel Standard Time. This page means India (Asia/Kolkata), which has one zone and no daylight saving time.
JST: Japan Standard Time · JST time now
Japan
Related converters
Questions
What is the time difference between IST and JST?
JST is 3 h 30 min ahead of IST all year.
What is 9 am IST in JST?
9:00 am IST is 12:30 PM JST, on dates when the usual difference applies. Use the converter above for any specific date.
Which IST does this page use?
IST can also mean Irish Standard Time or Israel Standard Time. This page means India (Asia/Kolkata), which has one zone and no daylight saving time.
Which JST does this page use?
Japan Standard Time, the clock time in Japan (IANA zone Asia/Tokyo).