IST to JST Converter
Japan Standard Time · Tokyo, Osaka, Kyoto, Hiroshima, Sapporo
Also convert in reverse: JST to IST →
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IST to JST Conversion Table
Common IST times converted to Japan Standard Time
| IST (UTC+05:30) | JST (UTC+09:00) | Note |
|---|---|---|
| 12:00 AM (midnight) | 3:30 AM | |
| 6:00 AM | 9:30 AM | |
| 9:00 AM | 12:30 PM | |
| 12:00 PM (noon) | 3:30 PM | |
| 3:00 PM | 6:30 PM | |
| 6:00 PM | 9:30 PM | |
| 9:00 PM | 12:30 AM | +1 day |
| 11:30 PM | 3:00 AM | +1 day |
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About Japan Standard Time
How to convert IST to JST
Indian Standard Time (IST) is UTC+5:30. Japan Standard Time is UTC+09:00. To convert IST to JST, add 3.5 hours to your IST time.
For example, 12:00 PM IST = 3:30 PM JST .
Time Difference: India (IST) and Japan
Indian Standard Time (IST) is UTC+5:30. Japan Standard Time is UTC+09:00, making the difference IST +3:30 hrs. India does not observe Daylight Saving Time — IST stays fixed at UTC+5:30 year-round. If Japan observes DST, the offset between IST and JST changes by 1 hour during the DST period (typically spring–autumn in the Northern Hemisphere).
⏰ Best overlap: 9:00 IST = 12:30 PM JST
Common IST Times in JST
| India (IST) | Japan — JST | Day |
|---|---|---|
| 9:00 AM IST (India morning) | 12:30 PM JST | same day |
| 12:00 PM IST (India noon) | 3:30 PM JST | same day |
| 3:00 PM IST (India afternoon) | 6:30 PM JST | same day |
| 6:00 PM IST (India evening) | 9:30 PM JST | same day |
| 9:00 PM IST (India night) | 12:30 AM JST | next day |
Convert JST times to Indian Standard Time: JST to IST Converter →
India–Japan Work Hour Overlap
Find the best meeting windows between India (IST) and Japan — including shared business hours, DST shifts, and daily overlap charts.
View India–Japan Overlap →