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Tokyo is +3h 30m ahead of Kolkata
Quick converter
FROM
Kolkata
India
UTC+05:30
TO
Tokyo
Japan
UTC+09:00
Date-aware conversion
Result
Fri, Jul 17, 2026 01:28
Kolkata: Thursday, July 16, 2026 9:58 PM GMT+5:30 to Tokyo: Friday, July 17, 2026 1:28 AM GMT+9.
Tokyo is 3h 30m ahead of Kolkata on this date
Every hour in Kolkata and the corresponding time in Tokyo. Green rows indicate business hours in Tokyo.
Time zones
Kolkata uses Asia/Kolkata (GMT+5:30) and Tokyo uses Asia/Tokyo (GMT+9). Neither city observes daylight saving time in this dataset.
Best use
Use the green rows to spot normal working hours in Tokyo. For teams across more cities, open the meeting planner and compare up to five locations.
Plan a meetingMeeting guidance
The easiest overlap starts around 9:00 AM and runs through 2:00 PM in the source city, while the destination city is also inside normal working hours. For important calls, check the meeting date because the offset can change when either location enters or leaves daylight saving time.
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City context
Kolkata is located in India (Asia). It uses the Asia/Kolkata timezone with a standard offset of UTC+05:30. It does not observe Daylight Saving Time. See the full Kolkata time page for live clock and planning details.
Tokyo is located in Japan (Asia). It uses the Asia/Tokyo timezone with a standard offset of UTC+09:00. It does not observe Daylight Saving Time. See the full Tokyo time page for live clock and planning details.
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