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Isfahan is -2h behind Kolkata
Quick converter
FROM
Kolkata
India
UTC+05:30
TO
Isfahan
Iran
UTC+03:30
Date-aware conversion
Result
Fri, Jul 17, 2026 01:06
Kolkata: Friday, July 17, 2026 3:06 AM GMT+5:30 to Isfahan: Friday, July 17, 2026 1:06 AM GMT+3:30.
Isfahan is 2h behind Kolkata on this date
Every hour in Kolkata and the corresponding time in Isfahan. Green rows indicate business hours in Isfahan.
Time zones
Kolkata uses Asia/Kolkata (GMT+5:30) and Isfahan uses Asia/Tehran (GMT+3:30). The difference can shift during daylight saving changes, so checking the exact date matters.
Best use
Use the green rows to spot normal working hours in Isfahan. For teams across more cities, open the meeting planner and compare up to five locations.
Plan a meetingMeeting guidance
The easiest overlap starts around 11:00 AM and runs through 5:00 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.
Compare meeting hoursQuick examples
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.
Isfahan is located in Iran (Asia). It uses the Asia/Tehran timezone with a standard offset of UTC+03:30. It observes DST, switching between IRST and IRDT. See the full Isfahan time page for live clock and planning details.
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