IST to EST conversion: Indian Standard Time (UTC+5:30) is 10 hours 30 minutes ahead of Eastern Standard Time (UTC−5) and 9 hours 30 minutes ahead of Eastern Daylight Time (UTC−4), used in New York from March to November. The Kalinga Times converter below handles both automatically.
Uses your browser’s built-in time zone data (IANA tz database), so daylight saving is applied for the date you pick. Nothing you enter leaves your device.
IST to EST offsets and 2026 switch dates
| Period (2026) | New York zone | UTC offset | India (IST) is ahead by |
|---|---|---|---|
| 1 Jan – 8 March 2026 | EST | UTC−5 | 10 h 30 min |
| 8 March 2026 – 1 November 2026 | EDT | UTC−4 | 9 h 30 min |
| 1 November 2026 – 31 Dec | EST | UTC−5 | 10 h 30 min |
Clocks in New York go forward on Sunday 8 March 2026, 2:00 am local time and back on Sunday 1 November 2026, 2:00 am local time. The rule is the second Sunday in March to first Sunday in November (US Energy Policy Act of 2005); source: 15 U.S. Code § 260a, checked 9 October 2026 against the IANA time zone database. India does not use daylight saving: IST is UTC+5:30 all year.
India–New York business hours overlap
India working day 09:00–18:00 IST, New York working day 09:00–17:00 local time; working hours are in bold. Winter column uses EST, summer column uses EDT.
| IST (India) | New York, EST (winter) | New York, EDT (summer) |
|---|---|---|
| 07:00 | 20:30 (−1 day) | 21:30 (−1 day) |
| 08:00 | 21:30 (−1 day) | 22:30 (−1 day) |
| 09:00 | 22:30 (−1 day) | 23:30 (−1 day) |
| 10:00 | 23:30 (−1 day) | 00:30 |
| 11:00 | 00:30 | 01:30 |
| 12:00 | 01:30 | 02:30 |
| 13:00 | 02:30 | 03:30 |
| 14:00 | 03:30 | 04:30 |
| 15:00 | 04:30 | 05:30 |
| 16:00 | 05:30 | 06:30 |
| 17:00 | 06:30 | 07:30 |
| 18:00 | 07:30 | 08:30 |
| 19:00 | 08:30 | 09:30 |
| 20:00 | 09:30 | 10:30 |
| 21:00 | 10:30 | 11:30 |
| 22:00 | 11:30 | 12:30 |
| 23:00 | 12:30 | 13:30 |
Scheduling tips
- Always write meeting times with both zones, for example “19:00 IST / 09:30 EDT”.
- On each switch date the gap to India changes by one hour; re-check recurring meetings that week.
- Calendar apps convert automatically if each invite carries a time zone; avoid typing times in the subject line only.
Share your result or suggest a fix
Did the converter show a time you did not expect? Email [email protected] with the date, both cities and what you expected; we check it against the IANA time zone database and note any correction with its date. Comments are switched off on this site.
FAQ
What is 9 am IST in EST?
In winter (EST) 9:00 am IST is 10:30 pm the previous day in New York; in summer (EDT) it is 11:30 pm the previous day.
Is New York 9.5 or 10.5 hours behind India?
Both, depending on the date: 10 h 30 min behind during EST (early November to early March) and 9 h 30 min behind during EDT (March to November).
When is the best time to call New York from India?
Between about 6:30 pm and 9:30 pm IST, which is New York morning (9:00 am to 12:00 noon during EDT, 8:00 to 11:00 am during EST).
Does India change its clocks?
No. IST stays at UTC+5:30 all year; only the US side changes.
Kalinga Times is an independent time tools site, not affiliated with the former Kalinga Times newspaper. Kalinga Times home.
Updated 9 October 2026 · Kalinga Times editorial team
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