US to India Time Difference: Why It Shifts by an Hour

India runs on a single time zone, India Standard Time (IST), which is UTC+5:30 all year — India does not observe daylight saving time. New York, on the other hand, switches between Eastern Daylight Time (UTC-4) in summer and Eastern Standard Time (UTC-5) in winter.

That means the New York–India difference is 9 hours 30 minutes when the US is on daylight time, and 10 hours 30 minutes when the US is on standard time. The half-hour comes from India's unusual :30 offset; the whole-hour shift comes from the US clock change.

Because India never changes its clocks, the difference only ever moves when the US does — on the second Sunday of March and the first Sunday of November. On November 1, 2026, when the US falls back, the New York–India gap widens from 9.5 hours to 10.5 hours.

The same logic applies to the other US zones: India is 12.5 hours ahead of Los Angeles in summer and 13.5 hours ahead in winter, and 10.5 or 11.5 hours ahead of Chicago depending on the season.

The large gap means there's only a narrow daily overlap of normal working hours — typically early morning US East Coast against evening in India. A 9:00 AM meeting in New York is 6:30 PM or 7:30 PM in India, depending on the season.

When scheduling recurring US–India calls across late October or early November, remember the US clock change will move the India-side time by an hour even though nothing changed in India. The live comparison above always reflects the current gap.