Time in Kolkata
The current local time and date in Kolkata, its time zone, and a converter to your own time.
Detecting your time zone to suggest the best hour to call…
Kolkata runs on India Standard Time (UTC+5:30), the single half-hour zone used nationwide from Mumbai to New Delhi, with no daylight saving anywhere in the country.
Kolkata stays on UTC+5:30 all year and does not change its clocks for daylight saving time. Kolkata uses India Standard Time, shared by all of India.
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See also: Population of India
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FAQ
What time is it in Kolkata right now?
Kolkata is on UTC+5:30 all year round, which is 5 hours 30 minutes ahead of UTC. So when it is 12:00 UTC, the local time in Kolkata is 17:30. The live clock at the top of this page applies that offset to the current moment and refreshes every second.
What time zone is Kolkata in?
Kolkata uses the Asia/Kolkata time zone, shown as GMT+5:30. Kolkata stays on UTC+5:30 all year and does not change its clocks for daylight saving time. Kolkata uses India Standard Time, shared by all of India. The "compare to your time zone" section above converts any Kolkata time into your own local time instantly.
Does Kolkata observe daylight saving time?
No — Kolkata does not observe daylight saving time. Its clocks stay on UTC+5:30 every day of the year, so its offset from UTC never moves. Kolkata uses India Standard Time, shared by all of India. The difference between Kolkata and another city therefore changes only when that other city starts or ends its own daylight saving period. If you are scheduling across the seasons, treat Kolkata as the fixed end of the pair and check the other city's dates instead.
How do I convert Kolkata time to my time zone?
Convert Kolkata time by taking its UTC+5:30 offset and applying the difference to your own: subtract Kolkata's offset from UTC to get the UTC time, then add your own offset. For example, 09:00 in Kolkata is 03:30 UTC. The converter above does this automatically after detecting your device's time zone, and the World Clock meeting planner lays several cities out on one colour-coded 24-hour grid.
What is the dialing code for Kolkata?
The dialing code for Kolkata is +91. To call from abroad, dial +91 before the local number. The card at the top of this page shows it alongside the live local time so you can check it is a reasonable hour before you call.
What are the best hours to call Kolkata?
Standard business hours in Kolkata — 9:00 to 17:00 local time — correspond to 03:30 to 11:30 UTC. Convert that UTC window into your own zone to find the overlap. The "best time to call" line above does this for you, using waking hours of roughly 8am–9pm on both ends so neither side is called at night.
Learn how time zones work
UTC & GMT explained · Daylight saving explained · How to convert a time between two cities