IST to JST Converter
Convert time between India Standard Time (IST) and Japan Standard Time (JST).
Convert a specific time
- IndiaIST, UTC+5:30
- Eastern Time – New YorkEDT, UTC-4
- Central Time – ChicagoCDT, UTC-5
- Mountain Time – DenverMDT, UTC-6
- Arizona – PhoenixMST, UTC-7
- Pacific Time – Los AngelesPDT, UTC-7
- Mexico CityCST, UTC-6
- Saskatchewan – ReginaCST, UTC-6
- UTC / GMTUTC, UTC+0
- United Kingdom – LondonBST, UTC+1
- Central Europe – Paris, BerlinCEST, UTC+2
- Gulf – DubaiGST, UTC+4
- SingaporeSGT, UTC+8
- Japan – TokyoJST, UTC+9
- Australia Eastern – SydneyAEST, UTC+10
- EST (always UTC-5)Fixed offset, no DST
- CST (always UTC-6)Fixed offset, no DST
- MST (always UTC-7)Fixed offset, no DST
- PST (always UTC-8)Fixed offset, no DST
- IndiaIST, UTC+5:30
- Eastern Time – New YorkEDT, UTC-4
- Central Time – ChicagoCDT, UTC-5
- Mountain Time – DenverMDT, UTC-6
- Arizona – PhoenixMST, UTC-7
- Pacific Time – Los AngelesPDT, UTC-7
- Mexico CityCST, UTC-6
- Saskatchewan – ReginaCST, UTC-6
- UTC / GMTUTC, UTC+0
- United Kingdom – LondonBST, UTC+1
- Central Europe – Paris, BerlinCEST, UTC+2
- Gulf – DubaiGST, UTC+4
- SingaporeSGT, UTC+8
- Japan – TokyoJST, UTC+9
- Australia Eastern – SydneyAEST, UTC+10
- EST (always UTC-5)Fixed offset, no DST
- CST (always UTC-6)Fixed offset, no DST
- MST (always UTC-7)Fixed offset, no DST
- PST (always UTC-8)Fixed offset, no DST
Time Difference
India Standard Time is 3 hours 30 minutes behind Japan Standard Time right now.
- All year: India Standard Time is 3 hours 30 minutes behind Japan Standard Time (IST → JST).
Best time to call
Convenient overlapping hours on Sunday, September 20, 2026.
| IST (India Standard Time) | JST (Japan Standard Time) |
|---|---|
| 9:30 AM | 1:00 PM |
| 10:30 AM | 2:00 PM |
| 11:30 AM | 3:00 PM |
| 12:30 PM | 4:00 PM |
These hours fall within 9 AM–5 PM in both places.
Convert another time zone Plan a meeting across IST and JSTIST to JST conversion table
For Sunday, September 20, 2026 in India Standard Time.
| IST | JST |
|---|---|
| 12:00 AM | 3:30 AM |
| 1:00 AM | 4:30 AM |
| 2:00 AM | 5:30 AM |
| 3:00 AM | 6:30 AM |
| 4:00 AM | 7:30 AM |
| 5:00 AM | 8:30 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(next day) |
| 10:00 PM | 1:30 AM(next day) |
| 11:00 PM | 2:30 AM(next day) |
About these time zones
India Standard Time (IST)
India Standard Time (IST) is UTC+5:30 and is used across all of India as a single time zone. India does not observe daylight saving time, so IST never changes — but its difference from places that do (like US Eastern Time) changes twice a year.
Japan Standard Time (JST)
Japan Standard Time (JST) is UTC+9 all year across the whole of Japan. Japan has not observed daylight saving time since 1951. JST shares its offset with Korea Standard Time.
IST to JST FAQs
What time is it in JST when it is 9 AM IST?
On Sunday, September 20, 2026, 9:00 AM IST is 12:30 PM JST in Japan Standard Time.
How many hours ahead is IST from JST?
India Standard Time is 3 hours 30 minutes behind Japan Standard Time (IST vs JST).
What is the best time for a call between IST and JST?
On Sunday, September 20, 2026, good options are 9:30 AM IST (1:00 PM JST), 10:30 AM IST (2:00 PM JST), 11:30 AM IST (3:00 PM JST), 12:30 PM IST (4:00 PM JST). These fall within normal 9 AM–5 PM working hours in both places.
Does IST change for daylight saving time?
No. IST stays at UTC+5:30 all year.
Does JST change for daylight saving time?
No. JST stays at UTC+9 all year.