About EST and IST
EST (Eastern Standard Time) is UTC−5, used by cities like New York, Washington D.C., Miami, Boston, and Toronto during standard time (winter). During summer, the US East Coast switches to EDT (UTC−4), making the difference 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.
The total offset between EST and IST is +10 hours 30 minutes — meaning India is 10.5 hours ahead of Eastern Standard Time.
What is EST to IST time difference? â–¾
IST is 10 hours 30 minutes ahead of EST. If it is 9:00 AM EST, it is 7:30 PM IST on the same day. During EDT (summer), the difference reduces to 9 hours 30 minutes.
What is the best time for a US–India meeting? ▾
The best overlap window is 8:00 AM–9:30 AM EST, which is 6:30 PM–8:00 PM IST — early morning in the US, early evening in India. Both parties are in reasonable working hours.
Does India observe daylight saving time? â–¾
No — India does not observe daylight saving time. IST stays at UTC+5:30 year-round. Only the US side changes between EST (winter) and EDT (summer).
Which US cities are in EST? â–¾
New York, Washington D.C., Miami, Boston, Philadelphia, Atlanta, Detroit, and Toronto (Canada) are all in the Eastern Time zone.