Time zone converter

JST to IST

India Standard Time (IST) is 3 hours 30 minutes behind Japan Standard Time (JST) all year: 9:00 AM JST is 5:30 AM IST.

Japan Standard Time
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Current time in Japan Standard Time
India Standard Time
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Current time in India Standard Time
Pick a date and time to convert.

IST vs JST over the next 12 months

PeriodIST isExample
Oct 23, 2026 onwards3 hours 30 minutes behind9:00 AM JST = 5:30 AM IST

JST to IST conversion table

Every hour of a weekday around Oct 23, 2026, in both zones.

Japan Standard TimeIndia Standard Time
12:00 AM8:30 PM (previous day)
1:00 AM9:30 PM (previous day)
2:00 AM10:30 PM (previous day)
3:00 AM11:30 PM (previous day)
4:00 AM12:30 AM
5:00 AM1:30 AM
6:00 AM2:30 AM
7:00 AM3:30 AM
8:00 AM4:30 AM
9:00 AM5:30 AM
10:00 AM6:30 AM
11:00 AM7:30 AM
12:00 PM8:30 AM
1:00 PM9:30 AM
2:00 PM10:30 AM
3:00 PM11:30 AM
4:00 PM12:30 PM
5:00 PM1:30 PM
6:00 PM2:30 PM
7:00 PM3:30 PM
8:00 PM4:30 PM
9:00 PM5:30 PM
10:00 PM6:30 PM
11:00 PM7:30 PM

Best time for a meeting

Normal 9-to-5 working hours overlap for 4 hours 30 minutes on a weekday: 12:30 PM–5:00 PM JST, which is 9:00 AM–1:30 PM IST.

Comparing more than two places? The meeting planner lines up working hours for up to six cities.

Daylight saving time

Neither JST nor IST changes its clocks, so the difference is the same all year.

Where these clocks are used

  • Japan Standard Time (JST): all of Japan. IANA zone Asia/Tokyo.
  • India Standard Time (IST): all of India: Mumbai, Delhi, Bengaluru, Chennai. IANA zone Asia/Kolkata.

Questions

What time is it in IST when it is 9 AM JST?

On Oct 23, 2026, 9:00 AM JST is 5:30 AM IST.

How many hours behind JST is IST?

IST is always 3 hours 30 minutes behind JST.

Do JST and IST observe daylight saving time?

Japan Standard Time stays on UTC+9 all year. India Standard Time stays on UTC+5:30 all year.

What is the best time for a meeting between JST and IST?

Normal 9-to-5 working hours overlap for 4 hours 30 minutes on a weekday: 12:30 PM–5:00 PM JST, which is 9:00 AM–1:30 PM IST.

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Related conversions

Computed from the IANA time zone database on Oct 23, 2026. Live clocks and the converter use your browser's copy of the same data.