IST to EST Time Zone Converter
India Standard Time to US Eastern Time lines up India's clock with New York, Boston, and Miami — and it almost always sends you back a day. Eastern is 10 hours 30 minutes behind India in winter and 9 hours 30 minutes behind in summer, because the US shifts to daylight time while India never changes. Morning in India is late the previous night on the US East Coast.
Enter a date and time to convert.
Daylight saving is applied automatically for the date you pick. Labels like PST/EST name the zone (Pacific/Eastern); the real abbreviation shifts to PDT/EDT during daylight saving, and gmt here means London (GMT in winter, BST in summer) while utc stays fixed.
The time difference
US Eastern Time is 10 hours 30 minutes behind India in winter and 9 hours 30 minutes behind in summer. India (Kolkata, Mumbai, Delhi, Bangalore) never moves from UTC+5:30, but the US East Coast springs forward on Mar 8, 2026 and falls back on Nov 1, 2026. Since only the US side shifts, the gap closes by an hour over the summer.
A worked example
Take 9:00 AM in India. On Jan 15, 2026 that is 10:30 PM the night before — Wed, Jan 14 — in New York. On Jul 15, 2026 it's 11:30 PM on Tue, Jul 14. Notice the day: an India morning lands on the previous calendar date on the East Coast. That day change is the classic gotcha when booking an India-US call, so pin the date, not just the clock.
Daylight saving & the abbreviation caveat
"EST" is the winter name. From spring to fall the East Coast runs on EDT (Eastern Daylight Time), an hour ahead, and locals just say "Eastern" or "ET" all year. India never observes daylight saving — it holds at UTC+5:30 always — so the shifting is always on the US side. The converter picks the right Eastern offset for your exact date, which is why the summer result differs by an hour.
When you'll use it
Scheduling a call between an India team and a US East Coast office, joining a New York market open, catching a live US broadcast, or setting overlap hours for remote work — always confirming which calendar day the US side lands on.
Frequently asked questions
How far behind IST is Eastern Time?
10 hours 30 minutes in winter (EST) and 9 hours 30 minutes in summer (EDT). India stays fixed while the US East Coast springs forward, so the gap narrows by an hour from spring to fall.
Why does 9 AM in India fall on the day before in New York?
With a 10-plus-hour gap, subtracting from an India morning drops you past midnight into the previous evening on the East Coast. It's a real scheduling trap for India-US calls — always check the date, not just the time.
Is EST the same as New York time?
In winter, yes. From spring to fall New York runs on EDT (Eastern Daylight Time), one hour ahead; locals just say 'Eastern' or 'ET' either way.