IST to JST · India → Tokyo (Japan)
Hour-by-hour conversion from India Standard Time to Japan Standard Time, with daylight-saving variants and the meeting window that works for both sides.
| IST (India) | IST → JST |
|---|---|
| 12:00 AM | 3:30 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 (+1d) |
| 10:00 PM | 1:30 AM (+1d) |
Notes
IST (India Standard Time, UTC+05:30) is 3h 30m behind JST (Japan Standard Time, UTC+09:00) when both are on standard time. Neither zone observes daylight saving, so the difference is the same all year.
Their 9:00–18:00 business hours overlap for about 5 hours a day — roughly 9:00 AM–2:00 PM in IST.
More conversions from IST: IST to EST · IST to CST · IST to PST · IST to GMT · IST to CET · IST to SGT · IST to GST · IST to AEST
Frequently asked questions
What is the time difference between IST and JST?
IST is 3h 30m behind JST on standard time, all year — neither zone observes daylight saving.
What time is 12 PM IST in JST?
12:00 PM IST is 3:30 PM in JST on standard time.
Do IST and JST business hours overlap?
Their 9:00–18:00 business hours overlap for about 5 hours a day — roughly 9:00 AM–2:00 PM in IST.