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India Standard Time

IST - UTC+5:30

Eastern Time

EST/EDT - UTC−5/UTC−4

Custom Time Converter

Enter any date and time in IST to see the corresponding Eastern Time.

Eastern Time Result

24-Hour Reference Table

IST hours starting from midnight UTC. Times reflect today's DST status for Eastern Time.

IST (UTC+5:30)	Eastern Time

How It Works

Formula (Winter - EST, Nov - Mar)

EST = IST − 10:30

Example: 6:30 PM IST = 8:00 AM EST

Formula (Summer - EDT, Mar - Nov)

EDT = IST − 9:30

Example: 6:30 PM IST = 9:00 AM EDT

DST Note

India has no DST. India uses a fixed UTC+5:30 offset year-round. The variation in the IST - EST gap is entirely due to US Eastern Time's DST schedule. Eastern Time observes EST (UTC−5) from early November to mid-March, and EDT (UTC−4) the rest of the year.

Frequently Asked Questions

IST is 10 hours 30 minutes ahead of EST (UTC−5) in winter, and 9 hours 30 minutes ahead of EDT (UTC−4) in summer. The 30-minute component is fixed because IST is itself a half-hour offset (UTC+5:30).

When US is in EST: 7:30 PM - 10:30 PM IST = 9:00 AM - 12:00 PM EST. In EDT: 6:30 PM - 9:30 PM IST = 9:00 AM - 12:00 PM EDT. The morning US business hours from 9:00 AM to noon ET represent the most practical overlap for both locations.

No. India uses a fixed UTC+5:30 offset year-round. The variation in the IST - EST gap is entirely due to US Eastern Time's DST schedule. This means the gap narrows by 1 hour when the US clocks move forward in spring, and widens again in autumn.

India chose UTC+5:30 to align with its geographic center. Many countries use non-whole-hour offsets, including India (UTC+5:30), Nepal (UTC+5:45), and Iran (UTC+3:30). These half- and quarter-hour offsets reflect historical and geographic compromise decisions rather than arbitrary choices.