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 to IST Conversion Table
Full 24-hour reference table. Use the live clocks above for the exact current offset.
| 🇺🇸 EST | 🇮🇳 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). This is the only slot where both sides are in normal working hours. After 9:30 AM EST, India crosses 8:00 PM IST — late evening for most workers.
About Eastern Standard Time (EST)
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, EST advances to EDT (UTC-4). 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
Use the live clocks and the table for different jobs. The live clocks show the current offset between Eastern Standard Time and India Standard Time. The table gives you a stable reference for planning common hours. If the page has more than one table column, pick the column that matches the season or DST state shown in the column label.
Daylight saving is the main trap. Some pairs stay fixed all year, while others move by one hour because only one side changes clocks, or because the two sides change on different dates. That is why this page keeps the daylight saving note near the live clocks and labels alternate table scenarios instead of hiding the offset change in a paragraph.
Always check the calendar date when the converted time lands near midnight. A late evening time in Eastern Standard Time can become the next day in India Standard Time, and an early morning time can still be the previous day. If the table marks "next day" or "prev day", include that date shift in the message or calendar invite.
Abbreviations can be ambiguous. ET can mean EST or EDT; London can be GMT or BST; Sydney can be AEST or AEDT. City names and IANA time zones are safer for exact scheduling than abbreviations alone. For recurring meetings, test the same local time once in January and once in July before you lock it in.
For one-off events, enter the exact date and time in the main time zone converter or meeting scheduler if the table does not show your hour. That keeps the answer tied to the correct daylight saving rule instead of a memorized offset.
When you share the result, write both local times in one line: "10:00 AM EST/ converted IST time." For client calls, flights, webinars, launches, and deadlines, also include the date. The extra wording feels repetitive, but it gives every recipient a second way to catch a timezone mistake before it becomes a missed meeting. It is especially helpful when someone forwards the invite to a third city.
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. Most US-India IT teams hold their daily sync in this slot.
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.