JST to IST Converter
Quick answers
Selected conversion
The selected date and time will appear here when the converter loads.
JST and IST examples
These examples always use JST (UTC+9) and IST (UTC+5:30). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.
JST is 3 hours and 30 minutes ahead of IST.
How the time difference changes
JST is 3 hours and 30 minutes ahead of IST year-round.
Working hours of 9:00 am to 5:00 pm in JST correspond to 5:30 am to 1:30 pm in IST.
Compare JST time with IST time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Japan Standard Time is 3 hours and 30 minutes ahead of India Standard Time
9:00 pm21:00 in JST is 5:30 pm17:30 in IST
JST to IST call time
Best time for a conference call or a meeting is between 12:30pm-5pm in JST which corresponds to 9am-1:30pm in IST
9:00 pm21:00 Japan Standard Time (JST). Offset UTC +9:00 hours
5:30 pm17:30 India Standard Time (IST). Offset UTC +5:30 hours
9:00 pm21:00 JST / 5:30 pm17:30 IST
| JST | IST |
|---|---|
| 12am (midnight) | 8:30 pm |
| 1am | 9:30 pm |
| 2am | 10:30 pm |
| 3am | 11:30 pm |
| 4am | 12:30 am |
| 5am | 1:30 am |
| 6am | 2:30 am |
| 7am | 3:30 am |
| 8am | 4:30 am |
| 9am | 5:30 am |
| 10am | 6:30 am |
| 11am | 7:30 am |
| 12pm (noon) | 8:30 am |
| 1pm | 9:30 am |
| 2pm | 10:30 am |
| 3pm | 11:30 am |
| 4pm | 12:30 pm |
| 5pm | 1:30 pm |
| 6pm | 2:30 pm |
| 7pm | 3:30 pm |
| 8pm | 4:30 pm |
| 9pm | 5:30 pm |
| 10pm | 6:30 pm |
| 11pm | 7:30 pm |
| 00:00 | 20:30 |
| 01:00 | 21:30 |
| 02:00 | 22:30 |
| 03:00 | 23:30 |
| 04:00 | 00:30 |
| 05:00 | 01:30 |
| 06:00 | 02:30 |
| 07:00 | 03:30 |
| 08:00 | 04:30 |
| 09:00 | 05:30 |
| 10:00 | 06:30 |
| 11:00 | 07:30 |
| 12:00 | 08:30 |
| 13:00 | 09:30 |
| 14:00 | 10:30 |
| 15:00 | 11:30 |
| 16:00 | 12:30 |
| 17:00 | 13:30 |
| 18:00 | 14:30 |
| 19:00 | 15:30 |
| 20:00 | 16:30 |
| 21:00 | 17:30 |
| 22:00 | 18:30 |
| 23:00 | 19:30 |
Japan Standard Time
Offset: JST is 9 hours ahead Greenwich Mean Time (GMT) and is used in Asia
Countries using this time zone: Japan
Principal Cities: The largest city in the JST time zone is Tokyo in Japan, with about 8.337 million people. Other major cities in this time zone include Yokohama, Osaka shi, Nagoya shi, Sapporo.
Daylight Saving: Clocks in Japan Standard Time (JST) do not change for daylight saving time, so JST stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter.
JST representations, usage and related time zones
- +09 - basic short
- +0900 - basic
- +09:00 - extended
- +0900 - sign character (+) followed by a four digit time providing hours (09) and minutes (00) of the offset. Indicates an offset of nine hours to the east of the zero meridian.
- India - Military abbreviation for JST
- I - short form of 'India'
- Asia/Tokyo
- Japan
- AWDT - Australian Western Daylight Time
- CHOST - Choibalsan Summer Time
- I - India Time Zone
- IRKST - Irkutsk Summer Time
- JST - Japan Standard Time
- KST - Korea Standard Time
- PWT - Palau Time
- TLT - East Timor Time
- ULAST - Ulaanbaatar Summer Time
- WIT - Eastern Indonesian Time
- YAKT - Yakutsk Time
India Standard Time
Offset: IST is 5 hours and 30 minutes ahead Greenwich Mean Time (GMT) and is used in Asia
Countries using this time zone: India
Principal Cities: The largest city in the IST time zone is Mumbai in India, with about 12.692 million people. Other major cities in this time zone include Delhi, Bangalore, Kolkata, Chennai.
Daylight Saving: Clocks in India Standard Time (IST) do not change for daylight saving time, so IST stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter.
IST representations, usage and related time zones
- +0530 - basic
- +05:30 - extended
- +0530 - sign character (+) followed by a four digit time providing hours (05) and minutes (30) of the offset. Indicates an offset of five hours and thirty minutes to the east of the zero meridian.
- Asia/Calcutta
- Asia/Kolkata
- India Standard Time - UTC +5:30
- Irish Standard Time - UTC +1
- Israel Standard Time - UTC +2