Conversion Scenario
IST to EST Converter
India Standard Time is UTC+5:30 all year. India does not observe daylight saving time. EST is UTC−5, so IST is 10 hours 30 minutes ahead of EST: 7:30 PM IST is 9:00 AM EST. During US daylight time, Eastern Time is EDT at UTC−4, and IST is 9 hours 30 minutes ahead: 6:30 PM IST is 9:00 AM EDT.
IST to EST quick reference
India Standard Time is UTC+5:30 all year. It is 10 hours 30 minutes ahead of EST (UTC−5) and 9 hours 30 minutes ahead of EDT (UTC−4).
- 7:30 PM IST
- 9:00 AM EST
- 6:30 PM IST
- 9:00 AM EDT
- 12:00 noon IST
- 1:30 AM EST or 2:30 AM EDT
- IST here is India Standard Time, not Irish Standard Time.
- India does not observe daylight saving time. The US Eastern clock does.
Quick answer
Subtract 10 hours 30 minutes to convert IST to EST. 7:30 PM IST is 9:00 AM EST, and 12:00 noon IST is 1:30 AM EST. IST is UTC+5:30. EST is UTC−5. India does not observe daylight saving time.
When Eastern Time is on EDT
EDT is UTC−4, so the gap shrinks to 9 hours 30 minutes. 6:30 PM IST is 9:00 AM EDT, and 12:00 noon IST is 2:30 AM EDT. Recheck standing US-India meetings when the United States starts or ends daylight saving time. The India clock does not move.
Why the 30 minutes matter
IST is not a whole-hour offset. A conversion that drops the 30 minutes is wrong by half an hour even when the hour count is right. 9:00 AM EST is 7:30 PM IST, not 7:00 PM IST.
Scheduling between India and the US East Coast
US morning lines up with India evening. During EST, a 9:00 AM Eastern call is 7:30 PM in India. During EDT, that same 9:00 AM Eastern call is 6:30 PM in India. Name the date, and write IST plus ET, EST, or EDT so both sides see which rule applies.
FAQ
What is 7:30 PM IST in EST?
7:30 PM IST is 9:00 AM EST. IST is UTC+5:30 and EST is UTC−5, a gap of 10 hours 30 minutes.
What is 6:30 PM IST in EDT?
6:30 PM IST is 9:00 AM EDT. During Eastern daylight time the gap is 9 hours 30 minutes because EDT is UTC−4 and India does not change clocks.
Does India use daylight saving time?
No. India Standard Time stays UTC+5:30 all year. Only the US Eastern side moves between EST and EDT.
Is IST Irish time or Indian time?
On this page IST means India Standard Time (Asia/Kolkata, UTC+5:30). It is not Irish Standard Time.
Also available in 简体中文