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
Sunday, 11 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.
Next public holiday
Republic Day
Mon, Jan 26, 2026 · all India holidays →
Sun today
Sunrise 05:32 · Sunset 17:16
Day length 11h 44m · twilight and monthly table →
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.
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.
Explore more for Kolkata
Everything else we track for Kolkata: daylight, weather, the country overview, and the exact time-zone references.