IST to EST Converter & Meeting Planner
Quick answer: 9:00 AM IST = 10:30 PM EST (fixed +05:30 standard offset — not DST-adjusted). Use the interactive converter below for DST-aware local-time scheduling.
Planning a call or meeting between Indian Standard Time (IST) and Eastern Standard Time (EST)? You need to account for the standard time difference. Eastern Standard Time is normally 10.5 hours behind Indian Standard Time. Whether you are coordinating between teams in Mumbai and New Delhi and New York and Toronto, our live tool has you covered. Use our interactive overlap studio below to find the perfect waking hours for both regions, taking into account any seasonal Daylight Saving Time (DST) changes.
24-Hour Conversion Table
Quick reference: 12:00 AM IST = 1:30 PM EST. The full 24-hour IST to EST table below uses fixed standard offsets for exact abbreviation searches.
Example: 3:00 PM IST = 4:30 AM EST.
| IST Time | EST Time |
|---|---|
| 12:00 AM (00:00) | 1:30 PM (13:30)-1 day |
| 1:00 AM (01:00) | 2:30 PM (14:30)-1 day |
| 2:00 AM (02:00) | 3:30 PM (15:30)-1 day |
| 3:00 AM (03:00) | 4:30 PM (16:30)-1 day |
| 4:00 AM (04:00) | 5:30 PM (17:30)-1 day |
| 5:00 AM (05:00) | 6:30 PM (18:30)-1 day |
| 6:00 AM (06:00) | 7:30 PM (19:30)-1 day |
| 7:00 AM (07:00) | 8:30 PM (20:30)-1 day |
| 8:00 AM (08:00) | 9:30 PM (21:30)-1 day |
| 9:00 AM (09:00) | 10:30 PM (22:30)-1 day |
| 10:00 AM (10:00) | 11:30 PM (23:30)-1 day |
| 11:00 AM (11:00) | 12:30 AM (00:30) |
| 12:00 PM (12:00) | 1:30 AM (01:30) |
| 1:00 PM (13:00) | 2:30 AM (02:30) |
| 2:00 PM (14:00) | 3:30 AM (03:30) |
| 3:00 PM (15:00) | 4:30 AM (04:30) |
| 4:00 PM (16:00) | 5:30 AM (05:30) |
| 5:00 PM (17:00) | 6:30 AM (06:30) |
| 6:00 PM (18:00) | 7:30 AM (07:30) |
| 7:00 PM (19:00) | 8:30 AM (08:30) |
| 8:00 PM (20:00) | 9:30 AM (09:30) |
| 9:00 PM (21:00) | 10:30 AM (10:30) |
| 10:00 PM (22:00) | 11:30 AM (11:30) |
| 11:00 PM (23:00) | 12:30 PM (12:30) |
Best time to call New York from Mumbai
For most work calls, compare the normal business day in Mumbai (IST) with the business day in New York (EST). IST commonly covers South Asia, while EST is mainly associated with North America, Caribbean, Central America.
⚠️ Note: 2026-07-05 is not a normal workday in one or both regions based on their configured calendar. The overlap below should be treated as a reference, not a guaranteed office-hours window.
⚠️ There is no clean same-day business-hours overlap on 2026-07-05. A practical compromise is around 6:30 PM IST, which reaches 9:00 AM EST near the start of their workday.
- DST Safety: IST or EST may shift during Daylight Saving Time. Always confirm the converted time for your specific date.
- Bombay Stock Exchange (BSE): 09:15-15:30 local time in Mumbai.
- NYSE & NASDAQ: 09:30-16:00 local time in New York.
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Frequently Asked Questions
What is the time difference between IST and EST?
During standard time, Eastern Standard Time is 10.5 hours behind Indian Standard Time.
Does India observe Daylight Saving Time (DST)?
India does not observe Daylight Saving Time and has not done so since 1945. IST remains fixed at UTC+5:30 every day of the year, meaning the offset between India and any DST-observing country shifts by one hour twice annually when those countries change their clocks.
Why does IST have a 30-minute offset?
India chose the 82.5° East meridian — which passes through Mirzapur in Uttar Pradesh — as its central reference longitude, as it bisects the subcontinent geographically. That meridian sits exactly 5 hours and 30 minutes ahead of the Prime Meridian in Greenwich, producing the UTC+5:30 offset that has defined IST since 1906.
Is EST the same as Eastern Time (ET)?
Not exactly. 'Eastern Time' (ET) is a broad geographical term. EST is the specific UTC-05:00 offset used in winter, while EDT (Eastern Daylight Time) is the UTC-04:00 offset used during summer.
Does Florida use EST?
Most of Florida is in the Eastern Time Zone. However, the western part of the Florida Panhandle operates on Central Time (CST/CDT).