EST to IST Converter
IST is 10 hours 30 minutes ahead of EST. During US daylight saving (EDT, March–November), the gap narrows to 9 hours 30 minutes.
Daylight saving note: During US EDT (March–November), the gap narrows from 10h 30m to 9h 30m. India never observes DST.
EST/EDT to IST Conversion Table
Full 24-hour reference table. Use the live clocks above for the exact current offset.
| 🇺🇸 EST/EDT | 🇮🇳 EST → ISTUTC-5 to UTC+5:30 | 🇮🇳 EDT → ISTUTC-4 to UTC+5:30 | Note |
|---|---|---|---|
| 00:00 | 10:30 AM | 9:30 AM | |
| 01:00 | 11:30 AM | 10:30 AM | |
| 02:00 | 12:30 PM | 11:30 AM | |
| 03:00 | 1:30 PM | 12:30 PM | |
| 04:00 | 2:30 PM | 1:30 PM | |
| 05:00 | 3:30 PM | 2:30 PM | |
| 06:00 | 4:30 PM | 3:30 PM | |
| 07:00 | 5:30 PM | 4:30 PM | |
| 08:00 | 6:30 PM | 5:30 PM | |
| 09:00 | 7:30 PM | 6:30 PM | |
| 10:00 | 8:30 PM | 7:30 PM | |
| 11:00 | 9:30 PM | 8:30 PM | |
| 12:00 | 10:30 PM | 9:30 PM | |
| 13:00 | 11:30 PM | 10:30 PM | |
| 14:00 | 12:30 AM | 11:30 PM | next day |
| 15:00 | 1:30 AM | 12:30 AM | next day |
| 16:00 | 2:30 AM | 1:30 AM | next day |
| 17:00 | 3:30 AM | 2:30 AM | next day |
| 18:00 | 4:30 AM | 3:30 AM | next day |
| 19:00 | 5:30 AM | 4:30 AM | next day |
| 20:00 | 6:30 AM | 5:30 AM | next day |
| 21:00 | 7:30 AM | 6:30 AM | next day |
| 22:00 | 8:30 AM | 7:30 AM | next day |
| 23:00 | 9:30 AM | 8:30 AM | next day |
* "next day" = converted time falls on the following calendar day.
Best Hours to Schedule Eastern Standard Time–India Standard Time Calls
The best daily window for US East Coast–India collaboration is 8:00–9:30 AM EST (6:30–8:00 PM IST) — the narrow slot where New York is in its normal working hours and India is still in the early evening rather than late night. After 9:30 AM EST, India crosses 8:00 PM IST — late evening for most workers.
About Eastern Standard Time (EST/EDT)
Eastern Standard Time (EST, UTC-5) is the reference timezone for the US East Coast — New York, Boston, Miami, and Washington DC. From March to November, the region switches to EDT (UTC-4) instead. This seasonal shift is the main variable in US-India scheduling.
About India Standard Time (IST)
India Standard Time (IST, UTC+5:30) is a single timezone covering the entire subcontinent — one of the largest single-timezone countries in the world. India does not observe daylight saving time, so IST stays at UTC+5:30 year-round. The half-hour offset (UTC+5:30 rather than UTC+5 or UTC+6) dates to 1905.
How to Avoid Eastern Standard Time–India Standard Time Conversion Mistakes
India Standard Time is already on the next calendar day from these EST/EDT times onward: 1:30 PM for EST → IST, 2:30 PM for EDT → IST. For example, 11:00 PM EST/EDT is 9:30 AM in India Standard Time on the next day (EST → IST).
Abbreviations can be ambiguous here: Eastern Standard Time switches between EST and EDT across the year, while India Standard Time stays on IST year-round. City names and IANA time zones (America/New_York and Asia/Kolkata) are safer for exact scheduling if you're automating anything, since they resolve the right abbreviation automatically instead of needing a manual seasonal check.
Worked Example: An Early Eastern Training Session for India
If you're running training from the US East Coast for an India audience, early morning is the slot. A 7:00 AM Eastern start is 5:30 PM in India on EST and 4:30 PM on EDT. An 8:00 AM start is 6:30 PM on EST and 5:30 PM on EDT.
The difference between the two results is the daylight saving effect. India doesn't change its clocks, so when the East Coast springs forward, the same Eastern time reaches India one hour earlier. If your India audience is already staying late, schedule with the shorter summer gap in mind.
Check it from India's side as well. India's 6:00 PM is 7:30 AM on the East Coast in winter and 8:30 AM in summer. If a session has to end by then, that's your latest US start time.
Frequently Asked Questions
What is the EST to IST time difference?
IST is 10 hours 30 minutes ahead of EST. During US Eastern Daylight Time (EDT, March–November), the gap is 9 hours 30 minutes. India does not observe daylight saving, so the change comes entirely from the US side.
What time is 9 AM EST in IST?
9:00 AM EST is 7:30 PM IST during standard time. During US EDT, 9:00 AM EDT is 6:30 PM IST.
What is the best US-India meeting time from the US East Coast?
The best overlap is 8:00–9:30 AM EST (6:30–8:00 PM IST). Outside this window, one side is either before 8 AM or past 8 PM, so this slot is the most workable option for a live sync.
Is IST ahead or behind EST?
IST is ahead of EST by 10.5 hours (9.5 hours during US EDT). When it is 9:00 AM in New York, it is 7:30 PM in India.