EST to IST Converter (Eastern Time → India Standard Time)
DST-aware. Hover any hour to sync rows. Click an hour to lock a meeting time. Your time: --:-- --
EST to IST at a glance
India Standard Time is 10 hours 30 minutes ahead of EST (Eastern Standard Time, in effect November to March) and 9 hours 30 minutes ahead of EDT (Eastern Daylight Time, in effect March to November). When it’s 9:00 AM EST in New York, it’s 7:30 PM IST in Mumbai. When it’s 9:00 AM EDT, it’s 6:30 PM IST. The slider above auto-detects which one applies based on the date you pick.
EST → IST conversion table (every hour)
| EST (winter) | IST (winter) | EDT (summer) | IST (summer) |
|---|---|---|---|
| 12:00 AM | 10:30 AM | 12:00 AM | 9:30 AM |
| 3:00 AM | 1:30 PM | 3:00 AM | 12:30 PM |
| 6:00 AM | 4:30 PM | 6:00 AM | 3:30 PM |
| 9:00 AM | 7:30 PM | 9:00 AM | 6:30 PM |
| 10:00 AM | 8:30 PM | 10:00 AM | 7:30 PM |
| 11:00 AM | 9:30 PM | 11:00 AM | 8:30 PM |
| 12:00 PM | 10:30 PM | 12:00 PM | 9:30 PM |
| 3:00 PM | 1:30 AM (+1) | 3:00 PM | 12:30 AM (+1) |
| 6:00 PM | 4:30 AM (+1) | 6:00 PM | 3:30 AM (+1) |
| 9:00 PM | 7:30 AM (+1) | 9:00 PM | 6:30 AM (+1) |
EST vs EDT: which one are you converting from?
This is where most converters get sloppy. "Eastern Time" in the US is two different things across the year:
- EST (Eastern Standard Time, UTC−5) — in effect from the first Sunday of November through the second Sunday of March. This is the "winter" offset.
- EDT (Eastern Daylight Time, UTC−4) — in effect from the second Sunday of March through the first Sunday of November. This is the "summer" offset.
India never shifts. IST is fixed at UTC+5:30 year-round. So the gap between US Eastern and IST alternates between 10:30 (winter) and 9:30 (summer). The slider at the top picks the correct offset based on the date you select. timeanddate.com’s DST schedule is the authoritative reference.
Best meeting times for US East Coast and India teams
The "Goldilocks window" for US–India calls is 9:00–11:00 AM EST = 7:30–9:30 PM IST. The slider highlights this band so you can spot it instantly.
Why we built this
We’re a Rails + React development agency based in India that ships software for US clients. Over twelve years we’ve scheduled thousands of meetings across this gap, and we’ve built distributed-team patterns into projects ranging from a Sharetribe marketplace for a Hawaii-based founder to a Rails SaaS run from an Indian team. Our take on the trade-offs lives in our piece on in-house vs outsourced SaaS development, and our Rails development service page covers how we structure the workflow itself.
Frequently asked questions
What is the time difference between EST and IST right now?IST is 10 hours 30 minutes ahead of EST and 9 hours 30 minutes ahead of EDT.
Why is the difference sometimes 9:30 and sometimes 10:30?The US observes DST, India does not. From the second Sunday of March through the first Sunday of November, the US East Coast is on EDT (UTC−4), making the gap 9:30. The rest of the year it’s on EST (UTC−5), making the gap 10:30.
What time is 9 AM EST in India?9:00 AM EST equals 7:30 PM IST the same day. 9:00 AM EDT equals 6:30 PM IST.
What time is 9 PM IST in EST?9:00 PM IST equals 10:30 AM EST the same day. During EDT, 9:00 PM IST equals 11:30 AM EDT.
Does India observe Daylight Saving Time?No. India has not observed DST since 1945. IST is fixed at UTC+5:30 year-round.
What is the best time for a meeting between US East Coast and India?9:00–11:00 AM EST works for both sides. That maps to 7:30–9:30 PM IST during US winter, or 6:30–8:30 PM IST during US summer.
Why is IST 30 minutes off the hour?The Indian government picked a single offset for the whole country in 1947 and split the difference at UTC+5:30.
How do I convert EST to IST without a tool?Add 10 hours 30 minutes to EST (or 9 hours 30 minutes if the US is on EDT). When the result crosses midnight, advance the date.
Is Eastern Time the same as EST?Not exactly. Eastern Time covers both EST (winter) and EDT (summer).
Could IST mean Irish Standard Time?Occasionally. The UK uses IST for Irish Standard Time (UTC+1).
Working across the US–India gap?
Time-zone math is the easy part. Distributed engineering for US clients out of an Indian team is the hard part. We do this every day at TechVinta.
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