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IST to JST time converter
Japan is 3.5 hours ahead of India all year.
IST to JST conversion table
Local time in India and the matching time in Japan on two reference dates, one in winter and one in summer for the northern hemisphere.
| India (IST) | Japan on 15 January | Japan on 15 July |
|---|---|---|
| 08:00 | 11:30 | 11:30 |
| 09:00 | 12:30 | 12:30 |
| 10:00 | 13:30 | 13:30 |
| 12:00 | 15:30 | 15:30 |
| 15:00 | 18:30 | 18:30 |
| 17:00 | 20:30 | 20:30 |
| 18:00 | 21:30 | 21:30 |
| 21:00 | 00:30 (+1 day) | 00:30 (+1 day) |
Best meeting times between India and Japan
- January: Inside both working days (09:00-17:00): 09:00-13:30 IST = 12:30-17:00 JST.
- July: Inside both working days (09:00-17:00): 09:00-13:30 IST = 12:30-17:00 JST.
Want to add more people? The meeting planner starts with these two zones and lets you add up to four more.
Daylight saving between IST and JST
- India does not change its clocks in 2026.
- Japan does not change its clocks in 2026.
About the two zones
India. India uses a single time zone, UTC+5:30, all year. It does not observe daylight saving, so the gap to zones that do changes twice a year.
Japan. Japan Standard Time is UTC+9 all year with no daylight saving.
Frequently asked questions
What time is 9 AM IST in JST?
On 15 January, 09:00 in India is 12:30 in Japan. On 15 July it is 12:30.
What is the time difference between India and Japan?
Japan is 3.5 hours ahead of India all year.
Does the time difference between IST and JST change during the year?
No. Neither zone changes its clocks in a way that alters the gap, so the difference stays at 3.5 hours.
When is the best time for a meeting between India and Japan?
Inside both working days (09:00-17:00): 09:00-13:30 IST = 12:30-17:00 JST. In July: Inside both working days (09:00-17:00): 09:00-13:30 IST = 12:30-17:00 JST.
More conversions
Need the time in a scheduler? Convert a local-time cron schedule to UTC, or see which jobs a clock change affects with the DST collision simulator.