JST to IST Converter
IST is 3 hours and 30 minutes behind JST
JST to IST Conversion Table
Green rows indicate standard business hours (9 AM – 5 PM) in IST
| JST | IST |
|---|---|
| 12:00 AM | 8:30 PM -1d |
| 1:00 AM | 9:30 PM -1d |
| 2:00 AM | 10:30 PM -1d |
| 3:00 AM | 11:30 PM -1d |
| 4:00 AM | 12:30 AM |
| 5:00 AM | 1:30 AM |
| 6:00 AM | 2:30 AM |
| 7:00 AM | 3:30 AM |
| 8:00 AM | 4:30 AM |
| 9:00 AM | 5:30 AM |
| 10:00 AM | 6:30 AM |
| 11:00 AM | 7:30 AM |
| 12:00 PM | 8:30 AM |
| 1:00 PM | 9:30 AM |
| 2:00 PM | 10:30 AM |
| 3:00 PM | 11:30 AM |
| 4:00 PM | 12:30 PM |
| 5:00 PM | 1:30 PM |
| 6:00 PM | 2:30 PM |
| 7:00 PM | 3:30 PM |
| 8:00 PM | 4:30 PM |
| 9:00 PM | 5:30 PM |
| 10:00 PM | 6:30 PM |
| 11:00 PM | 7:30 PM |
Converting Japan Standard Time to India Standard Time
Japan Standard Time (JST) and India Standard Time (IST) are separated by a 3 hours and 30 minutes time difference. IST is 3 hours and 30 minutes behind JST. JST is UTC+9, used in Japan, while IST is UTC+5:30, used in India, Sri Lanka.
When converting from JST to IST, the key reference points to remember are: 9:00 AM JST equals 5:30 AM IST, 12:00 PM noon JST equals 8:30 AM IST, and 5:00 PM JST equals 1:30 PM IST. The conversion table above shows every hour of the day mapped between these two time zones.
Scheduling Across JST and IST
For professionals scheduling meetings between JST and IST, finding overlapping business hours is essential. Standard business hours are typically 9:00 AM to 5:00 PM in each time zone. Given the 3 hours and 30 minutes difference, the window of overlap may be limited. Use the highlighted working hours in the conversion table above to quickly identify suitable meeting times.
Daylight Saving Time Considerations
JST does not observe Daylight Saving Time, maintaining UTC+9 year-round. IST does not observe DST, staying at UTC+5:30 year-round.