Kolkata is 9.5-10.5 hours ahead of New York. Kolkata uses Indian Standard Time (IST, UTC+5:30) while New York uses Eastern Time (ET, UTC-5/-4). During standard time, Kolkata is 10.5 hours ahead; during daylight saving time, Kolkata is 9.5 hours ahead.
India does not observe daylight saving time, while New York does, so the difference varies seasonally.
Best calling time: 6:30 PM - 11:30 PM Kolkata time. This corresponds to approximately 9:00 AM - 2:00 PM in New York during daylight saving time.
Kolkata is one of India's major cultural and economic centers, while New York is a global financial hub. Both cities have significant Bengali communities, and business connections span IT, finance, and trade sectors.