Kolkata to New York
IST to EST Converter
9:00 AM IST is 10:30 PM EST the previous day. India is 10 hours 30 minutes ahead of Eastern Standard Time.
India Standard Time IST
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Kolkata
Eastern Time ET
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New York
IST is 10 hours 30 minutes ahead of EST
IST to EST Hour Table
January rows show how far the Eastern clock sits behind India, including previous-day marks. Pick a summer date for EDT, which is 9 hours 30 minutes behind IST.
| India Standard Time | Eastern Time | Day |
|---|---|---|
| 12:00 AM | 1:30 PM | previous day |
| 1:00 AM | 2:30 PM | previous day |
| 2:00 AM | 3:30 PM | previous day |
| 3:00 AM | 4:30 PM | previous day |
| 4:00 AM | 5:30 PM | previous day |
| 5:00 AM | 6:30 PM | previous day |
| 6:00 AM | 7:30 PM | previous day |
| 7:00 AM | 8:30 PM | previous day |
| 8:00 AM | 9:30 PM | previous day |
| 9:00 AM | 10:30 PM | previous day |
| 10:00 AM | 11:30 PM | previous day |
| 11:00 AM | 12:30 AM | |
| 12:00 PM | 1:30 AM | |
| 1:00 PM | 2:30 AM | |
| 2:00 PM | 3:30 AM | |
| 3:00 PM | 4:30 AM | |
| 4:00 PM | 5:30 AM | |
| 5:00 PM | 6:30 AM | |
| 6:00 PM | 7:30 AM | |
| 7:00 PM | 8:30 AM | |
| 8:00 PM | 9:30 AM | |
| 9:00 PM | 10:30 AM | |
| 10:00 PM | 11:30 AM | |
| 11:00 PM | 12:30 PM |
About IST and EST
The source is Asia/Kolkata. The target is America/New_York. Kolkata does not observe daylight saving, so every US clock change shows up entirely on the New York side.
Morning in India is the previous evening in New York. That is the useful fact for a call: 10:00 AM IST is 11:30 PM EST the night before, or 12:30 AM EDT when New York has sprung forward.
| Zone | IANA | Standard | Daylight |
|---|---|---|---|
| India Standard Time | Asia/Kolkata | IST (UTC+5:30) | IST (UTC+5:30) |
| Eastern Time | America/New_York | EST (UTC−5) | EDT (UTC−4) |
Scheduling from India to New York
9:30 AM IST is 11:00 PM EST the previous day, too late for a New York workday. 6:30 PM IST is 8:00 AM EST, the first hour both offices are usually open. 8:00 PM IST is 9:30 AM EST.
FAQ
What is 9 AM IST in EST?
10:30 PM EST the previous day.
What is 6:30 PM IST in EST?
8:00 AM EST.
Why do the minutes stay at :30?
India is UTC+5:30. Eastern offsets are whole hours, so an on-the-hour time in India lands on the half hour in New York.