It's 9 a.m. in New York and someone in Bengaluru is joining the standup. From the second Sunday in March to the first Sunday in November — March 8 to November 1 in 2026 — that lands at 6:30 p.m. for them, dinner going cold. The rest of the year it's 7:30 p.m. India Standard Time sits at UTC+5:30 and never moves; New York shifts twice a year, so the gap swings between nine and a half hours and ten and a half. The clocks above show both cities to the second, and the converter resolves any time on any date.
What People Convert EST to IST For
Daily standups with an India engineering team
A fifteen-minute scrum at 8:30 a.m. Eastern reaches Bengaluru at 6 p.m. while New York is on EDT, and 7 p.m. once it falls back to EST on November 1, 2026. Teams that keep the slot pinned in ET quietly push their India colleagues an hour later every autumn. Moving it to 8 a.m. Eastern holds the India side at 5:30 or 6:30 p.m.
Follow-the-sun support handoffs
An offshore L1 queue that closes at 6:30 p.m. IST hands over at 9 a.m. Eastern during EDT and 8 a.m. during EST — a difference that decides whether the Atlanta shift is already at a desk. Going the other way, a 5 p.m. Eastern handoff arrives at 2:30 a.m. or 3:30 a.m. in Pune, so the ticket sits until morning either way. Convert the actual date before you promise a response time.
Calling family at dinner time
Dinner in Delhi at 8:30 p.m. is 11 a.m. in New York during EDT and 10 a.m. once EST returns — a workable coffee-break call from either side. The trap is the reverse: 8 p.m. Eastern, when you finally sit down, is 5:30 a.m. the next day in Delhi under EDT and 6:30 a.m. under EST. A Saturday call at 10 a.m. Eastern reaches them at 7:30 p.m. in the EDT months and 8:30 p.m. in winter, usually the easiest slot of the week.
Cricket start times for US viewers
An IPL evening fixture at 7:30 p.m. IST starts at 10 a.m. Eastern, since the season runs late March through May with New York on EDT. The 3:30 p.m. afternoon game of a doubleheader is a 6 a.m. Eastern alarm. A Test in India starting 9:30 a.m. IST is midnight Eastern under EDT, but 11 p.m. the previous evening once EST returns — the US date moves too.
Market hours: the NSE, the BSE, and the NYSE
The NSE and BSE trade 9:15 a.m. to 3:30 p.m. IST, which during EDT runs from 11:45 p.m. the previous evening in New York through 6 a.m. — an hour earlier at each end under EST. The NYSE opens at 9:30 a.m. Eastern, or 7 p.m. in Mumbai during EDT and 8 p.m. under EST. The two sessions never overlap, so an Indian close and a US open are separated by three and a half hours in summer and four and a half in winter.
Deadlines with offshore contractors
A contract that says deliverables are due "end of day Friday" without a zone is really two deadlines. Friday 5 p.m. Eastern is 2:30 a.m. Saturday in Hyderabad during EDT and 3:30 a.m. under EST, while the Indian team clocked off around 6:30 p.m. IST — eight hours before your deadline existed, nine once EST returns. Writing "5 p.m. ET Friday / 2:30 a.m. IST Saturday" into the statement of work costs one line and ends the argument.
Booking slots that open on an Indian clock
IRCTC Tatkal quota opens at 10 a.m. IST for AC classes and 11 a.m. for sleeper, one day before travel. From New York that's a 12:30 a.m. alarm during EDT and 11:30 p.m. the previous night under EST. Consulate appointment releases, university result portals, and festival ticket drops all run on the same Indian clock, and none of them wait for a US time zone to catch up.
How the Conversion Works
There is no fixed ten-and-a-half-hour addition in this page. It asks your browser's IANA timezone database for the actual UTC offset of America/New_York and Asia/Kolkata at the exact instant you select. New York returns −5 or −4 depending on whether the date falls inside daylight saving; Asia/Kolkata returns +5:30 every time, because India has no DST rule to apply. The engine subtracts one from the other, which is why a January conversion and a July conversion differ by an hour. Everything runs locally; no date or time you type leaves the browser.
Frequently Asked Questions
Is IST always 10 hours and 30 minutes ahead of EST?
IST is exactly 10 hours 30 minutes ahead of EST, because EST is UTC−5 and IST is UTC+5:30. But New York only uses EST for part of the year. In 2026 it switches to EDT (UTC−4) on March 8 and back to EST on November 1, and during that stretch India is 9 hours 30 minutes ahead instead. The converter reads the date before choosing.
What is 9 a.m. EST in IST?
9 a.m. EST is 7:30 p.m. IST the same day. That answer holds from November 1, 2026 until the following March. If your date falls between March 8 and November 1, 2026, New York is on EDT rather than EST, and 9 a.m. becomes 6:30 p.m. IST. Most people searching for "EST to IST" in July actually need the EDT answer, so enter the real date rather than trusting the abbreviation.
Does India observe daylight saving time?
No. Asia/Kolkata has stayed at UTC+5:30 continuously for decades, with no seasonal shift anywhere in the country. India briefly used clock changes during wartime in the 1940s and again around the 1962 conflict, but nothing since. Every hour of movement in the EST-to-IST gap comes from the American side of the calculation, never the Indian side.
Why is IST offset by 30 minutes?
India uses a single national time zone based on the 82.5°E meridian, which passes near Mirzapur in Uttar Pradesh. Multiply 82.5 degrees by four minutes per degree and you get exactly 5 hours 30 minutes ahead of UTC. The practical consequence is that every whole hour in New York maps to a half-hour in India: 2 p.m. Eastern is 11:30 p.m. IST under EDT and 12:30 a.m. the next day under EST, never a clean hour.
What is the best meeting time between the US East Coast and India?
The workable band is 8 a.m. to 11 a.m. Eastern. During EDT that lands between 5:30 p.m. and 8:30 p.m. in India; under EST it shifts to 6:30 p.m. through 9:30 p.m. The early end is kinder to Bengaluru and Hyderabad, where the office day usually winds down around 6:30 p.m. Anything after noon Eastern pushes India past 9:30 p.m., and anything before 7 a.m. Eastern is a genuinely early US start.
Which places use IST, and can IST mean something else?
Asia/Kolkata covers all of India — Mumbai, Delhi, Bengaluru, Chennai, Kolkata, Hyderabad — on one national clock, with no regional variation. Sri Lanka runs on the same UTC+5:30 offset. Nepal is close but not identical at UTC+5:45. Watch the abbreviation: IST also stands for Israel Standard Time (UTC+2) and Irish Standard Time (UTC+1). This page always means India Standard Time and Asia/Kolkata.