Convert IST to JST time zone

In the graph below you see the time zone difference between India Standard Time and Japan Standard Time. Drag the bubble to adjust the time and to see the corresponding time in the other time zone.


09 Business hours 18
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Tips for converting IST to JST

India Standard Time is the time zone of India, including cities like New Delhi, Mumbai, Bangalore, Kolkata and Colombo. Japan Standard Time is the time zone of Japan, with places like Tokyo, Osaka, Sapporo, Nagoya and Fukuoka.

When is the best time to schedule a meeting with IST and JST?

Usually it is preferable to schedule meetings before lunch for the person in IST and in the afternoon for the person in JST.

Other common time zone conversions

More IST conversions
IST to EST, IST to PST, IST to GMT, IST to CST, IST to CET

More JST conversions
JST to EST, JST to GMT, JST to PST, JST to CET, JST to IST

About IST - Indian Standard Time

Indian Standard Time, or IST for short, is the timezone of the Indian subcontinent. It is 3.5h ahead of GMT – so when the clock is 12 noon in India it is 8.30 in the morning in Delhi and Mumbai.

Countries using IST:

India, Sri Lanka

Example of cities observing it:

Delhi, Colombo, Kolkata and Mumbai

Summer time and Daylight saving time:

This timezone does not observe daylight saving time so the time difference always stay the same. You however need to pay attention to if the other time zone is observing DST as this will make a difference.

Other:

IST can also refer to Irish Standard Time or Israeli Standard time, but most of the times it is India that is being referred to – just make sure to double check this before you send that calendar invite!



About JST – Japan Standard Time

Japan Standard Time, or JST for short, is the standard time zone of Japan. It is 9 hours ahead of UTC. This also includes the islands of Okinawa even though they previously used a separate time zone. These days all of Japan runs on Japan Standard Time, from Hokkaido to Kyushu.

Countries using JST:

Japan is the only country using Japan Standard Time. It is however the same time as KST – Korean Standard Time and AWDT – Australian Western Daylight Time (i.e. when Western Australia applies Daylight Saving Time).

Example of cities:

All cities in Japan applies JST, including Tokyo, Kyoto, Sapporo, Fukuoka, Hiroshima, Nagano and Nagoya.

Daylight saving time and summer time:

DST (Daylight Saving Time) is currently not applied in Japan, although there have been attempts to re-introduce it. Especially the northern island of Hokkaido are in favor of DST as the sun rises very early in summer under the current system. Another argument to re-introduce DST has been that it would have a positive effect on emissions, but this has not been proven in any studies yet.