Offset
The time difference between Kolkata and New York is 9.5 hours.
Kolkata (IST) is ahead of New York (EDT).
IST: UTC+5:30
EDT: UTC-4
New York is currently observing daylight saving time; Kolkata is not.
When to schedule
Standard business hours (9 AM–5 PM, Mon–Fri) in Kolkata and New York don't overlap on the same weekday. New York is 9 hours behind Kolkata.
With some flexibility, there’s a workable window outside standard hours:
- 5 PM–8 PM in Kolkata (7 AM–10 AM in New York) — suggest 6:00 PM Kolkata (8:30 AM New York).
This means an early start or late finish for one side, but it’s a reasonable slot for a one-off meeting.
This window may shift by an hour during daylight saving time.
Public holidays in 2026
National public holidays can affect availability — a counterpart is likely off work on their own holidays, so it's worth planning meetings and deadlines around them.
United States
- New Year's DayThu, Jan 1
- Martin Luther King, Jr. DayMon, Jan 19
- Presidents DayMon, Feb 16
- Memorial DayMon, May 25
- Juneteenth National Independence DayFri, Jun 19
- Independence DayFri, Jul 3
- Labour DayMon, Sep 7
- Columbus DayMon, Oct 12
- Veterans DayWed, Nov 11
- Thanksgiving DayThu, Nov 26
- Christmas DayFri, Dec 25
About these zones
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| Kolkata | New York | Day |
|---|---|---|
| 12:00 am | 2:30 pm | -1 day |
| 1:00 am | 3:30 pm | -1 day |
| 2:00 am | 4:30 pm | -1 day |
| 3:00 am | 5:30 pm | -1 day |
| 4:00 am | 6:30 pm | -1 day |
| 5:00 am | 7:30 pm | -1 day |
| 6:00 am | 8:30 pm | -1 day |
| 7:00 am | 9:30 pm | -1 day |
| 8:00 am | 10:30 pm | -1 day |
| 9:00 am | 11:30 pm | -1 day |
| 10:00 am | 12:30 am | Same day |
| 11:00 am | 1:30 am | Same day |
| 12:00 pm | 2:30 am | Same day |
| 1:00 pm | 3:30 am | Same day |
| 2:00 pm | 4:30 am | Same day |
| 3:00 pm | 5:30 am | Same day |
| 4:00 pm | 6:30 am | Same day |
| 5:00 pm | 7:30 am | Same day |
| 6:00 pm | 8:30 am | Same day |
| 7:00 pm | 9:30 am | Same day |
| 8:00 pm | 10:30 am | Same day |
| 9:00 pm | 11:30 am | Same day |
| 10:00 pm | 12:30 pm | Same day |
| 11:00 pm | 1:30 pm | Same day |
Daylight saving time
New York observes daylight saving time; Kolkata does not. The offset between the two zones changes when New York transitions: on Sunday, November 1, 2026, clocks fall back from EDT to EST.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 4:52 AM
- Sunset
- 6:21 PM
- Day length
- 13h 28m
- Sunrise
- 5:26 AM
- Sunset
- 8:26 PM
- Day length
- 15h
Daylight overlap: 1h 3m — 4:52 AM–5:56 AM in Kolkata (7:22 PM–8:26 PM in New York). Both locations are in daylight during this window.
Cities in these zones
Other cities in India Standard Time
Other cities in Eastern Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in India Standard Time
- BOM
- NMI
- DEL
- BLR
- HYD
- AMD
- MAA
- CCU
- STV
- PNQ
Airports in Eastern Time
- EWR
- HPN
- JFK
- LGA
- TEB
- ILG
- PHL
- TTN
- CLT
- USA
Related conversions
Common conversions
- What is 9:00 am Kolkata in New York?
- 9:00 am Kolkata is 11:30 pm New York, the previous day.
- What is 12:00 pm Kolkata in New York?
- 12:00 pm Kolkata is 2:30 am New York.
- What is 12:30 pm Kolkata in New York?
- 12:30 pm Kolkata is 3:00 am New York.
- What is 2:00 pm Kolkata in New York?
- 2:00 pm Kolkata is 4:30 am New York.
- What is 5:00 pm Kolkata in New York?
- 5:00 pm Kolkata is 7:30 am New York.
- What is 11:30 pm Kolkata in New York?
- 11:30 pm Kolkata is 2:00 pm New York.