India (IST) is 10 hours 30 minutes ahead of Eastern Standard Time (EST). Convert any time between New York, Washington DC, Miami, Boston, and India instantly.
Common Eastern Time to India time conversions with working hours indication.
| EST — New York | IST — India | Status |
|---|---|---|
| 6:00 AM | 4:30 PM | IST working |
| 7:00 AM | 5:30 PM | Best overlap window |
| 8:00 AM | 6:30 PM | Best overlap window |
| 9:00 AM | 7:30 PM | Both working |
| 9:30 AM | 8:00 PM | Acceptable |
| 10:00 AM | 8:30 PM | Late for India |
| 12:00 PM | 10:30 PM | EST only |
| 3:00 PM | 1:30 AM +1 | EST only |
| 6:00 PM | 4:30 AM +1 | India asleep |
| 9:00 PM | 7:30 AM +1 | IST starting |
| 11:00 PM | 9:30 AM +1 | IST working |
EST (Eastern Standard Time) is UTC-5, used by major US cities including New York, Washington D.C., Miami, Boston, Philadelphia, Atlanta, Charlotte, Pittsburgh, Detroit, and Toronto (Canada). From March to November, EST switches to EDT (Eastern Daylight Time, UTC-4), reducing the IST difference to 9 hours 30 minutes.
IST (India Standard Time) is UTC+5:30, used across all of India and Sri Lanka. India does not observe daylight saving time, so IST stays the same year-round. India is the most populous country with a half-hour offset.
The total offset between EST and IST is +10 hours 30 minutes — meaning India is 10.5 hours ahead of Eastern Standard Time. During US summer (EDT), this gap reduces to 9 hours 30 minutes.
For US-India remote teams in Eastern Time, the best call window is 8:00 to 9:30 AM EST, which lands at 6:30 to 8:00 PM IST. This is the optimal overlap where both sides are within reasonable working hours — morning for the US East Coast, evening for India.
If you cannot do morning calls, the next-best option is 9:00 to 10:00 PM EST (7:30 to 8:30 AM IST next day) — late evening in New York, early morning in India. Avoid scheduling between 11 AM and 6 PM EST as that lands during India's night.
The US observes Daylight Saving Time, but India does not. This means the EST-IST gap changes twice a year:
Set a calendar reminder for the 2nd Sunday in March and 1st Sunday in November to review any recurring meetings with India — your usual 8 AM EST call will shift in IST by 1 hour.