EST to IST Converter – Convert Eastern Time to Indian Time
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Complete EST ↔ IST Conversion Table
All 24 hours · Both DST seasons · Best meeting windows marked ★
| US Eastern Time | India Standard Time EST Season Nov – Mar · UTC−5 → UTC+5:30 (+10h 30m) |
India Standard Time EDT Season Mar – Nov · UTC−4 → UTC+5:30 (+9h 30m) |
|---|---|---|
| 12:00 AM (midnight) | 10:30 AM | 9:30 AM |
| 1:00 AM | 11:30 AM | 10:30 AM |
| 2:00 AM | 12:30 PM | 11:30 AM |
| 3:00 AM | 1:30 PM | 12:30 PM |
| 4:00 AM | 2:30 PM | 1:30 PM |
| 5:00 AM | 3:30 PM | 2:30 PM |
| 6:00 AM | 4:30 PM | 3:30 PM |
| 7:00 AM | 5:30 PM | 4:30 PM |
| ★ 8:00 AM | ★ 6:30 PM | 5:30 PM |
| ★ 9:00 AM | ★ 7:30 PM | ★ 6:30 PM |
| ★ 10:00 AM | ★ 8:30 PM | ★ 7:30 PM |
| ★ 11:00 AM | 9:30 PM | ★ 8:30 PM |
| 12:00 PM (noon) | 10:30 PM | 9:30 PM |
| 1:00 PM | 11:30 PM | 10:30 PM |
| 2:00 PM | +1 12:30 AM | 11:30 PM |
| 3:00 PM | +1 1:30 AM | +1 12:30 AM |
| 4:00 PM | +1 2:30 AM | +1 1:30 AM |
| 5:00 PM | +1 3:30 AM | +1 2:30 AM |
| 6:00 PM | +1 4:30 AM | +1 3:30 AM |
| 7:00 PM | +1 5:30 AM | +1 4:30 AM |
| ★ 8:00 PM | +1 ★ 6:30 AM | +1 5:30 AM |
| ★ 9:00 PM | +1 ★ 7:30 AM | +1 ★ 6:30 AM |
| ★ 10:00 PM | +1 ★ 8:30 AM | +1 ★ 7:30 AM |
| 11:00 PM | +1 9:30 AM | +1 8:30 AM |
What is the time difference between EST and IST?
IST is 10 hours 30 minutes ahead of EST. When EST switches to EDT (March to November), the gap changes to 9 hours 30 minutes ahead of EDT. 9:00 AM EST = 7:30 PM IST. 12:00 PM EST = 10:30 PM IST. 5:00 PM EST = 3:30 AM (next day) IST.
What is the best time to call from New York to Mumbai?
There is no 9-to-5 business hours overlap between EST and IST. The typical compromise is early morning EST: 8:00 AM EST (6:30 PM IST), or late evening EST: 6:00 PM EST (4:30 AM (next day) IST). One side will be outside normal hours, so teams usually rotate who takes the off-hours call.
Frequently Asked Questions about EST and IST
To convert EST to IST, add 10 hours and 30 minutes to Eastern Standard Time. For example, when it's 9:00 AM in New York (EST), it's 7:30 PM in Mumbai (IST). During Daylight Saving Time (EDT), IST is 9 hours and 30 minutes ahead. Use our converter above for instant, accurate conversions.
IST is 10 hours and 30 minutes ahead of EST. During Daylight Saving Time (March to November), when the US switches to EDT, the difference becomes 9 hours and 30 minutes. India does not observe Daylight Saving Time, so IST remains constant year-round at UTC+5:30.
The best meeting time between New York and India is typically 9:00 AM EST (7:30 PM IST) or 8:00 PM EST (6:30 AM IST next day). For team calls between US East Coast and Indian cities like Mumbai, Delhi, or Bangalore, early morning EST (evening IST) or late evening EST (early morning IST) works best for overlapping business hours.
Yes, the US East Coast observes Daylight Saving Time. Clocks spring forward on the second Sunday in March (EST becomes EDT) and fall back on the first Sunday in November. During EDT, the time difference with India reduces from 10.5 hours to 9.5 hours, affecting meeting schedules between New York and Mumbai.
Major cities in EST include New York City, Boston, Philadelphia, Washington DC, Miami, Atlanta, and Toronto. All these cities observe Eastern Time, switching between EST (winter) and EDT (summer) during Daylight Saving Time transitions.
All of India follows IST (Indian Standard Time), including Mumbai, Delhi, Bangalore, Hyderabad, Chennai, Kolkata, Pune, and Ahmedabad. India does not observe Daylight Saving Time, so IST remains UTC+5:30 throughout the year, making time conversions with EST/EDT more predictable.
For calls between New York and Mumbai, schedule early morning EST (9-11 AM, which is 7:30-9:30 PM IST) or late evening EST (8-10 PM, which is 6:30-8:30 AM IST next day). Always include both time zones in meeting invites: "9:00 AM EST / 7:30 PM IST". Remember that from March to November, EDT is in effect, reducing the time difference to 9.5 hours instead of 10.5 hours.
Best Times for EST-IST Business Collaboration
Morning EST Option
8:00 AM - 11:00 AM EST
= 6:30 PM - 9:30 PM IST
Perfect for end-of-day calls with Mumbai, Delhi, and Bangalore teams. Indian colleagues are wrapping up their workday.
Evening EST Option
8:00 PM - 10:00 PM EST
= 6:30 AM - 8:30 AM IST (next day)
Ideal for early morning collaboration with India. US East Coast teams can connect at the start of Indian business hours.
Pro Tips
- Schedule recurring meetings before DST changes
- Send calendar invites with both time zones
- Popular cities: New York, Boston, Philadelphia (EST) ? Mumbai, Delhi, Bangalore (IST)
- India doesn't observe DST - consistent year-round at UTC+5:30
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