Zone & HourCurrent Local Time in KolkataIndia
Your device supplies the current instant.
Asia/Kolkata
About Kolkata time
Asia/Kolkata is the IANA identifier used for India Standard Time. Older systems may use the Asia/Calcutta alias; both refer to the same modern time rules.
Kolkata, India, uses Asia/Kolkata. An IANA identifier names the set of rules used for this location; it can include historical changes as well as different offsets within a year.
Daylight saving and UTC offset
No UTC offset change is found in the 2026 reference data. The offset is UTC+05:30.
These offsets describe the selected reference year, not every year in the city’s history. The live clock above and date-aware converter use the time-zone rules installed in your browser. Update your device when a government announces a change.
Compare Kolkata with another city or read how daylight saving affects meetings.
Kolkata compared with major cities
Reference: 9:00 AM on 2026-10-05 in Kolkata. These are dated examples, not live clocks.
| City | Local time | Relative to Kolkata |
|---|---|---|
| New York | 11:30 PM · 2026-10-04 | 9 hours and 30 minutes behind |
| London | 4:30 AM · 2026-10-05 | 4 hours and 30 minutes behind |
| Seoul | 12:30 PM · 2026-10-05 | 3 hours and 30 minutes ahead |
| Tokyo | 12:30 PM · 2026-10-05 | 3 hours and 30 minutes ahead |
| Sydney | 2:30 PM · 2026-10-05 | 5 hours and 30 minutes ahead |
| Dubai | 7:30 AM · 2026-10-05 | 1 hour and 30 minutes behind |
Popular Kolkata time comparisons
Questions about the time in Kolkata
What time zone does Kolkata use?
Kolkata uses Asia/Kolkata. The calculated offsets in 2026 are UTC+05:30. City selection is safer than relying on an abbreviation alone.
Does Kolkata change its clocks?
No UTC offset change is found in the 2026 reference data. The offset is UTC+05:30. For a historical or future appointment, select its specific date in the converter.
Why might my device show a different time?
The clock uses your device’s current instant and its installed time-zone data. An incorrect system clock or old time-zone database can produce a mismatch. Enable automatic date and time, update your system, then reload.