Time in Kolkata, India 🇮🇳
The current local time in Kolkata, India is shown below — the city is in the Asia/Kolkata time zone (UTC +05:30 · IST).
Kolkata local time
Thursday, 22 October 2026 IST
Kolkata at a glance
- Time zone
Asia/Kolkata· India Standard Time- UTC offset now
- +05:30 IST
- Daylight saving
- No · UTC +05:30 all year
- Coordinates
- 22.57° N, 88.36° E
- Population
- 14,850,000
- Country
- India · ISO IN
- Dialing code
- +91
- Currency
- Indian Rupee (INR)
- Work week
- Monday to Friday
- Drives on the
- Left
Kolkata right now
Time difference
Kolkata is shown here relative to your device's time zone.
Planning a call? Compare hours side by side in the time zone converter.
Upcoming public holidays
- Christmas Day Fri, Dec 25, 2026
- Republic Day Tue, Jan 26, 2027
- Good Friday Fri, Mar 26, 2027
- Ambedkar Jayanti Wed, Apr 14, 2027
Sun today
Sunrise 05:36 · Sunset 17:07
Day length 11h 31m · twilight and monthly table →
Kolkata time vs. UTC
A 09:00–17:00 working day in Kolkata overlaps with 09:00–17:00 UTC from 14:30 to 17:00 Kolkata time. Open this page in your browser and the second row switches to your own time zone.
| Kolkata | 00:00 | 01:00 | 02:00 | 03:00 | 04:00 | 05:00 | 06:00 | 07:00 | 08:00 | 09:00 | 10:00 | 11:00 | 12:00 | 13:00 | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 | 20:00 | 21:00 | 22:00 | 23:00 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UTC | 18:30 | 19:30 | 20:30 | 21:30 | 22:30 | 23:30 | 00:30 | 01:30 | 02:30 | 03:30 | 04:30 | 05:30 | 06:30 | 07:30 | 08:30 | 09:30 | 10:30 | 11:30 | 12:30 | 13:30 | 14:30 | 15:30 | 16:30 | 17:30 |
- Office hours 09–17
- Awake, off work
- Night 22–07
Kolkata vs. major cities
How far Kolkata is from the world's main business centres right now, what time it is there when the working day starts in Kolkata, and which hours of a 09:00–17:00 day the two places share. Daylight saving changes are applied automatically.
| City | Difference | At 09:00 in Kolkata | Shared office hours |
|---|---|---|---|
| New York · United States | −9:30 h | 23:30 (prev. day) | None |
| Los Angeles · United States | −12:30 h | 20:30 (prev. day) | None |
| São Paulo · Brazil | −8:30 h | 00:30 | None |
| London · United Kingdom | −4:30 h | 04:30 | 13:30–17:00 |
| Paris · France | −3:30 h | 05:30 | 12:30–17:00 |
| Johannesburg · South Africa | −3:30 h | 05:30 | 12:30–17:00 |
| Dubai · United Arab Emirates | −1:30 h | 07:30 | 10:30–17:00 |
| Singapore · Singapore | +2:30 h | 11:30 | 09:00–14:30 |
| Beijing · China | +2:30 h | 11:30 | 09:00–14:30 |
| Tokyo · Japan | +3:30 h | 12:30 | 09:00–13:30 |
Shared office hours are shown in Kolkata time. Compare any set of cities hour by hour in the time zone converter, or pick a slot that suits everyone with the event planner.
Cities near Kolkata
The closest places to Kolkata among the cities we track, measured in a straight line from the city centre. Some of them keep a different clock, so check the time difference before crossing a border or booking a call.
| City | Distance | Time difference |
|---|---|---|
| Dhaka · Bangladesh | 250 km (160 mi) northeast | +0:30 h |
| Kathmandu · Nepal | 650 km (400 mi) northwest | +0:15 h |
| Hyderabad | 1,180 km (730 mi) southwest | Same time |
| Delhi | 1,320 km (820 mi) northwest | Same time |
| Chennai | 1,360 km (840 mi) southwest | Same time |
| Bangalore | 1,560 km (970 mi) southwest | Same time |
| Pune | 1,580 km (980 mi) west | Same time |
| Bangkok · Thailand | 1,610 km (1,000 mi) southeast | +1:30 h |
Distances are great-circle distances. A plus sign means the other city is ahead of Kolkata.
Clock time vs. sun time in Kolkata
Kolkata's standard offset, UTC +05:30, is based on the 82.5° E meridian; the city itself lies at 88.36° E, 5.9° east of it. In standard time its clocks run about 23 min behind the sun. Solar noon — when the sun is highest — falls between 11:21 (around 29 October) and 11:52 (around 12 February) on the clock. Mornings get light earlier and evenings get dark sooner than the clock suggests.
How dates and times are written in Kolkata
- Short date
- 22/10/2026 · DD/MM/YYYY
- Long date
- 22 अक्टूबर 2026
- Time
- 3:30 pm · 12-hour clock
- Week starts on
- Sunday
Examples show 22 October 2026 at 15:30 using the Unicode CLDR conventions for hi-IN, India's most common locale. Businesses and English-language sources may use other formats.
Clock changes in Kolkata
Kolkata has kept the same UTC +05:30 offset without daylight saving time since at least 1970.
No clock changes are scheduled in 2026 or 2027: Kolkata stays on UTC +05:30 all year.
Source: IANA tz database, as shipped with the Unicode ICU library.
Daylight in Kolkata through the year
The longest day in Kolkata is 22 June with 13h 31m of daylight; the shortest is 22 December with 10h 45m. Day length swings by 2 h 46 min over the year. The earliest sunrise is at 04:52 on 3 June and the latest sunset at 18:26 on 27 June — not on the solstice itself, because solar noon drifts through the year.
Frequently asked questions
What time zone is Kolkata in?
Kolkata uses the Asia/Kolkata time zone (IST): UTC +05:30 all year round.
Does Kolkata observe daylight saving time?
No. Kolkata has not used daylight saving time since at least 1970.
When is the longest day of the year in Kolkata?
Around 22 June, with 13h 31m of daylight. The shortest day is around 22 December, with 10h 45m.
What is the dialing code for Kolkata?
To call Kolkata from abroad, dial your international access code, then India's country code +91, then the local number without its leading trunk prefix.
What are normal working days in Kolkata?
The standard work week in India runs Monday to Friday, with the weekend on Saturday and Sunday. Keep this in mind when scheduling calls from countries with a different weekend.
Why is sunrise so early in Kolkata?
Kolkata lies at 88.36° E, 5.9° east of the 82.5° E meridian its UTC +05:30 offset is based on, so its clocks run about 23 min behind the sun. Solar noon falls between 11:21 and 11:52 through the year instead of around 12:00, and the earliest sunrise is at 04:52 on 3 June.
What is the nearest city to Kolkata on a different time?
Of the 189 cities we track, the closest one keeping a different clock is Dhaka, Bangladesh, about 250 km (160 mi) to the northeast. It is 30 min ahead of Kolkata.
How are dates and times written in Kolkata?
Following the hi-IN conventions in the Unicode CLDR, a short date is written DD/MM/YYYY (22/10/2026) and times usually use the 12-hour clock (3:30 pm). Calendars start the week on Sunday.
Explore more for Kolkata
Everything else we track for Kolkata: daylight, weather, the country overview, and the exact time-zone references.