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The current time in Kolkata, India is shown live on this page. Kolkata is in the Asia/Kolkata timezone, which has a UTC offset of UTC+05:30 (GMT+5:30). Kolkata does not observe daylight saving time, so its UTC offset of UTC+05:30 remains constant year-round. Kolkata has a population of approximately 14.9M people. Kolkata uses INR and the international calling code for India is ++91. Other cities in the same timezone include Mumbai, Delhi, Bangalore.
Now in IN
Timezone
Asia/Kolkata
UTC offset
UTC+05:30
Standard
IST
DST
No regular shift
Local time guide
Use this page when you need the live local time in Kolkata for meetings, travel plans, event schedules, support hours, or international calls. London is currently 4 hours 30 minutes behind Kolkata. New York is currently 9 hours 30 minutes behind Kolkata.
At a glance
Quick compare
Timezone
Asia/Kolkata
UTC Offset
UTC+05:30
Abbreviation
GMT+5:30
DST
Not active
Region
Southern Asia
Country
India
State / Area
West Bengal
Calling Code
+91
Nearest timezone boundary
The nearest major city that uses a different timezone is Dhaka, approximately 251 km away. Dhaka uses the Asia/Dhaka timezone. When it is the current time in Kolkata, the time in Dhaka is different by 0.5 hours.
City profile
Kolkata is located in West Bengal, India, in the Asia continent. The primary languages spoken here are Hindi, English. The city has a population of approximately 14.9M, ranking it #10 in India by size. For timezone purposes, Kolkata uses Asia/Kolkata (UTC+05:30). It does not observe daylight saving time, so its UTC offset stays consistent year-round.
Travel and calls
Kolkata does not observe daylight saving time, so its clock stays consistent throughout the year.
Kolkata does not observe Daylight Saving Time.
Time comparison
Here is what time it is in other major cities when it is 12:00 AM (midnight) in Kolkata. This is useful for planning calls and understanding the time difference at a fixed reference point.
Daylight hours
Based on Kolkata's latitude (22.6°N), the estimated daylight duration for this month is approximately 13.3 hours, with sunrise around 5:22 AM and sunset around 6:38 PM. Being near the equator, Kolkata experiences relatively consistent daylight year-round, with only small seasonal variation.
Best time to call
For work calls, the standard business window in Kolkata is roughly 9:00 AM to 5:00 PM GMT+5:30. If the other party is in a distant timezone, verify the exact date before sending a calendar invite — daylight saving transitions can shift the overlap by an hour without warning.
Business hours in Kolkata (2:00 PM - 6:00 PM) overlap with London starting at 9:30 AM. The best window for calls between these two cities is 4 hours per day. Business hours overlap: 2:00 PM - 6:00 PM in Kolkata time.
Local planning notes
Best call window
The optimal window for calls between Kolkata and London is 2:00 PM - 6:00 PM in Kolkata time (4 overlapping hours).
Daylight saving impact
Kolkata does not observe DST, so its UTC offset of UTC+05:30 stays constant year-round. This makes it a reliable reference point for long-term scheduling.
Travel essentials
For travel and business planning, Kolkata uses INR and the calling code for India is +91. Languages spoken here include Hindi, English. The city has a population of around 14.9M, making it a major regional hub for timezone planning in Southern Asia.
Timezone context
The nearest timezone boundary is 251 km away at Dhaka (BST). This is a moderate distance, but the timezone difference can affect daily coordination.
Popular conversions
The most relevant time conversions for Kolkata are with nearby Southern Asia cities and major global hubs in different timezones.
Timezone boundaries nearby
The closest cities that operate in a different timezone than Kolkata. Useful for understanding where the timezone boundary falls and how local times differ just a short distance away.
Same timezone
Mumbai, Delhi, Bangalore, Chennai, and others share the Asia/Kolkata timezone with Kolkata. These cities have the same current offset and follow the same daylight saving schedule, so they are useful alternatives when comparing local time across the region.
Embed this clock
Embed a live Kolkata clock on your website. The widget is fully responsive, lightweight, and free to use.
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