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EST
US East Coast
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IST
India
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EST to IST Conversion Table — Standard Time

Offset: EST +10.5 hours = IST. Applies during standard time. Work hours (9 AM–5 PM) highlighted.

EST IST
00:00 10:30
01:00 11:30
02:00 12:30
03:00 13:30
04:00 14:30
05:00 15:30
06:00 16:30
07:00 17:30
08:00 18:30
09:00 19:30
10:00 20:30
11:00 21:30
12:00 22:30
13:00 23:30
14:00 00:30 (+1 day)
15:00 01:30 (+1 day)
16:00 02:30 (+1 day)
17:00 03:30 (+1 day)
18:00 04:30 (+1 day)
19:00 05:30 (+1 day)
20:00 06:30 (+1 day)
21:00 07:30 (+1 day)
22:00 08:30 (+1 day)
23:00 09:30 (+1 day)

EDT to IST Conversion Table — Daylight Saving

Offset: EDT +9.5 hours = IST. Applies when US East Coast is observing daylight saving time.

EDT IST
00:00 09:30
01:00 10:30
02:00 11:30
03:00 12:30
04:00 13:30
05:00 14:30
06:00 15:30
07:00 16:30
08:00 17:30
09:00 18:30
10:00 19:30
11:00 20:30
12:00 21:30
13:00 22:30
14:00 23:30
15:00 00:30 (+1 day)
16:00 01:30 (+1 day)
17:00 02:30 (+1 day)
18:00 03:30 (+1 day)
19:00 04:30 (+1 day)
20:00 05:30 (+1 day)
21:00 06:30 (+1 day)
22:00 07:30 (+1 day)
23:00 08:30 (+1 day)

The Eastern-to-India corridor is the backbone of US–India outsourcing. New York and New Jersey financial firms, North Carolina banks, and Georgia-based enterprises all manage teams in India’s major tech hubs.

Add 10 hours and 30 minutes to EST to get IST. A 9 AM Eastern kickoff lands at 7:30 PM IST. A 6 AM Eastern standup is 4:30 PM IST, catching the Indian team before their day ends.

When the US shifts to EDT in spring, the offset shrinks to 9 hours and 30 minutes. That 6 AM Eastern standup then lands at 3:30 PM IST. India’s clock never changes, so the full seasonal swing rests on the US side. Teams that schedule meetings at the boundary of the overlap window should adjust their recurring invites in March and November.

Daylight Saving Time: What Changes

US East Coast observes daylight saving time, but India does not. This means the offset between EST and IST changes seasonally: 10.5 hours during standard time and 9.5 hours during daylight saving. Double-check the current offset during transition weeks in March and November.

Frequently Asked Questions

How do I convert Eastern Time to IST?

Add 10 hours and 30 minutes during standard time (November–March). During EDT (March–November), add 9 hours and 30 minutes. For example, 8 AM EST is 6:30 PM IST; 8 AM EDT is 5:30 PM IST.

Does the EST-to-IST gap change during the year?

Yes. India does not observe DST, but the US does. When the US shifts to EDT, the gap shrinks by 1 hour. The offset moves between 10.5 hours (winter) and 9.5 hours (summer).

What is the recommended overlap window for Eastern and IST?

Aim for 7–9 AM Eastern during winter (5:30–7:30 PM IST) or 8–10 AM Eastern during summer (5:30–7:30 PM IST). This catches the end of India’s workday and the start of the US East Coast’s. Meetings later than 10 AM Eastern fall outside Indian business hours.

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