Current time in Kolkata
Kolkata, West Bengal, India, keeps India Standard Time at UTC+05:30 all year, with no clock changes.
Current time in Kolkata
20:52:07
Asia/Kolkata · UTC+05:30
Time zone in Kolkata
Sunrise and sunset in Kolkata
Sun and clock in Kolkata
Averaged over the year, solar noon in Kolkata comes at 11:37, because the city lies about 6° east of the meridian its clock is set to.
Ahmedabad, 1,620 km to the west, keeps the same clock, yet the sun crosses the meridian there 1 h 3 min later than in Kolkata.
Daylight through the year in Kolkata
Havana, at 23.1°N, lies on almost the same parallel as Kolkata, so its days stay within 2 minutes of Kolkata’s all year; its clock is 9 h 30 min or 10 h 30 min behind Kolkata, depending on the date.
| Date | Sunrise | Sunset | Day length |
|---|---|---|---|
| November 15 | 05:49 | 16:53 | 11 h 4 m |
| December 15 | 06:09 | 16:54 | 10 h 46 m |
| January 15 | 06:19 | 17:13 | 10 h 54 m |
| February 15 | 06:08 | 17:33 | 11 h 25 m |
| March 15 | 05:45 | 17:46 | 12 h 0 m |
| April 15 | 05:17 | 17:57 | 12 h 40 m |
| May 15 | 04:56 | 18:09 | 13 h 13 m |
| June 15 | 04:52 | 18:22 | 13 h 31 m |
| July 15 | 05:01 | 18:24 | 13 h 23 m |
| August 15 | 05:14 | 18:09 | 12 h 55 m |
| September 15 | 05:23 | 17:40 | 12 h 17 m |
| October 15 | 05:33 | 17:12 | 11 h 39 m |
When the clocks change in Kolkata
Kolkata has kept UTC+05:30 since October 15, 1945. The last time its clock showed anything else was from September 1, 1942 to October 15, 1945, when it ran at UTC+06:30. That was the last of 3 such spells in the record since 1900. The record opens with Kolkata’s own local mean time, UTC+05:53:28, kept until 1854.
Calling Kolkata from another time zone
| Place | Kolkata’s 09:00–17:00 there | Shared working hours | Over the next 12 months |
|---|---|---|---|
| UTC | 03:30–11:30 | — | — |
| New York | 22:30–06:30 (previous day) | none | none all year |
| London | 03:30–11:30 | 2 h 30 min, 14:30–17:00 Kolkata time | 2 h 30 min to 3 h 30 min |
| Tokyo | 12:30–20:30 | 4 h 30 min, 09:00–13:30 Kolkata time | always 4 h 30 min |
At 09:00 on Monday, November 9, 2026 in Kolkata, 26 listed cities, including Lima and Mexico City, are still on Sunday. By 17:00 on Friday, Auckland and Wellington have already reached Saturday.
Kolkata compared with other cities
| City | Local time | Date | UTC offset | Difference from Kolkata | Over the next 12 months |
|---|---|---|---|---|---|
| New York | — | — | UTC-05:00 | 10 h 30 min behind | 10 h 30 min behind / 9 h 30 min behind |
| London | — | — | UTC+00:00 | 5 h 30 min behind | 5 h 30 min behind / 4 h 30 min behind |
| Dubai | — | — | UTC+04:00 | 1 h 30 min behind | all year |
| New Delhi | — | — | UTC+05:30 | the same time | all year |
| Singapore | — | — | UTC+08:00 | 2 h 30 min ahead | all year |
| Tokyo | — | — | UTC+09:00 | 3 h 30 min ahead | all year |
| Sydney | — | — | UTC+11:00 | 5 h 30 min ahead | 4 h 30 min ahead / 5 h 30 min ahead |
Nearby cities
Other places in this directory that keep Asia/Kolkata time: New Delhi, Mumbai, Bengaluru, Chennai, Hyderabad, Pune, Ahmedabad and Jaipur.
| City | Distance | Clock | Solar noon |
|---|---|---|---|
| Dhaka | 250 km north-east | 30 min ahead | 8 minutes earlier |
| Kathmandu | 650 km north-west | 15 min ahead | 12 minutes later |
| Hyderabad | 1,180 km south-west | same clock | 40 minutes later |
| New Delhi | 1,300 km north-west | same clock | 45 minutes later |
| Jaipur | 1,360 km north-west | same clock | 50 minutes later |
| Chennai | 1,360 km south-west | same clock | 32 minutes later |
| Bengaluru | 1,560 km south-west | same clock | 43 minutes later |
| Pune | 1,580 km west | same clock | 58 minutes later |
Beyond Kolkata’s own identifier, the nearest city in this directory on exactly the same clock is Colombo, 1,960 km to the south-west, on Asia/Colombo.
Time zone rules: IANA tz database release 2026c, applied when this page was generated on 2026-11-02.
Frequently asked questions
What time zone is Kolkata in?
Kolkata keeps Asia/Kolkata, India Standard Time, at UTC+05:30 all year. The identifier is named after Kolkata itself.
Is all of India on the same time as Kolkata?
Yes. Asia/Kolkata is the tz database’s only entry for India, and Kolkata keeps it.
Which other countries keep exactly the same time as Kolkata?
Sri Lanka keeps exactly Kolkata’s clock, with no clock changes either.
What is the time difference between Kolkata and Dhaka?
The clock in Dhaka, Bangladesh, about 250 km away and the closest city in this directory on a different clock, is 30 min ahead of Kolkata.