Eastern Time is 9 hours 30 minutes behind India Standard Time right now (until Oct 31, 2026); the gap changes to 10 hours 30 minutes when clocks change for daylight saving time. So 12:00 PM IST = 2:30 AM EDT at the moment. (Eastern Time is on EDT for daylight saving time right now.)
IST to EST conversion table
| IST | EDT when IST is IST | EST when IST is IST |
|---|---|---|
| 12:00 AM | 2:30 PM −1 day | 1:30 PM −1 day |
| 1:00 AM | 3:30 PM −1 day | 2:30 PM −1 day |
| 2:00 AM | 4:30 PM −1 day | 3:30 PM −1 day |
| 3:00 AM | 5:30 PM −1 day | 4:30 PM −1 day |
| 4:00 AM | 6:30 PM −1 day | 5:30 PM −1 day |
| 5:00 AM | 7:30 PM −1 day | 6:30 PM −1 day |
| 6:00 AM | 8:30 PM −1 day | 7:30 PM −1 day |
| 7:00 AM | 9:30 PM −1 day | 8:30 PM −1 day |
| 8:00 AM | 10:30 PM −1 day | 9:30 PM −1 day |
| 9:00 AM | 11:30 PM −1 day | 10:30 PM −1 day |
| 10:00 AM | 12:30 AM | 11:30 PM −1 day |
| 11:00 AM | 1:30 AM | 12:30 AM |
| 12:00 PM | 2:30 AM | 1:30 AM |
| 1:00 PM | 3:30 AM | 2:30 AM |
| 2:00 PM | 4:30 AM | 3:30 AM |
| 3:00 PM | 5:30 AM | 4:30 AM |
| 4:00 PM | 6:30 AM | 5:30 AM |
| 5:00 PM | 7:30 AM | 6:30 AM |
| 6:00 PM | 8:30 AM | 7:30 AM |
| 7:00 PM | 9:30 AM | 8:30 AM |
| 8:00 PM | 10:30 AM | 9:30 AM |
| 9:00 PM | 11:30 AM | 10:30 AM |
| 10:00 PM | 12:30 PM | 11:30 AM |
| 11:00 PM | 1:30 PM | 12:30 PM |
IST and EST difference through 2027
The gap between the two zones on each date range, including daylight saving time changes:
| Dates | India Standard Time | Eastern Time | Difference |
|---|---|---|---|
| Sep 30, 2026 – Oct 31, 2026 | IST (UTC+5:30) | EDT (UTC−4) | EST 9 hours 30 minutes behind |
| Nov 1, 2026 – Mar 13, 2027 | IST (UTC+5:30) | EST (UTC−5) | EST 10 hours 30 minutes behind |
| Mar 14, 2027 – Nov 6, 2027 | IST (UTC+5:30) | EDT (UTC−4) | EST 9 hours 30 minutes behind |
| Nov 7, 2027 – Dec 31, 2027 | IST (UTC+5:30) | EST (UTC−5) | EST 10 hours 30 minutes behind |
Best time to meet or call
- When EST is 9 hours 30 minutes behind IST: Standard 9 AM–5 PM working hours don't overlap. The best compromise is usually early morning in India Standard Time (8:00 AM–9:00 AM), which is 10:30 PM–11:30 PM in Eastern Time.
- When EST is 10 hours 30 minutes behind IST: Standard 9 AM–5 PM working hours don't overlap. The best compromise is usually early morning in India Standard Time (8:00 AM–9:00 AM), which is 9:30 PM–10:30 PM in Eastern Time.
About India Standard Time (IST)
India uses one time zone, IST (UTC+5:30), all year. India does not observe daylight saving time, so its difference from the US and UK changes when they change their clocks. It's used in all of India, including New Delhi, Mumbai, Bengaluru, Hyderabad, Chennai and Kolkata.
About Eastern Time (EST)
The Eastern time zone uses EST (UTC−5) in winter and EDT (UTC−4) during daylight saving time, from the second Sunday in March to the first Sunday in November. It's used in New York, Washington DC, Boston, Atlanta, Miami, Detroit and Toronto.
Frequently asked questions
What time is 12 PM IST in EST?
12:00 PM IST is 2:30 AM EDT right now (Sep 30, 2026 to Oct 31, 2026). The answer changes when either zone changes its clocks for daylight saving time.
How many hours ahead or behind is EST from IST?
Currently 9 hours 30 minutes behind IST. During the year the difference is 9 hours 30 minutes behind IST or 10 hours 30 minutes behind IST, depending on daylight saving time. See the table on this page for exact dates.
Does IST change for daylight saving time?
No. India uses one time zone, IST (UTC+5:30), all year. India does not observe daylight saving time, so its difference from the US and UK changes when they change their clocks.
Does EST change for daylight saving time?
Yes. The Eastern time zone uses EST (UTC−5) in winter and EDT (UTC−4) during daylight saving time, from the second Sunday in March to the first Sunday in November.
What is the best time for a call between IST and EST?
Working hours don't overlap. Early morning in India Standard Time or evening in Eastern Time usually works best.
More time zone conversions
- EST to IST (reverse)
- PST to EST
- CST to EST
- MST to EST
- IST to PST
- IST to CST
- IST to GMT
- IST to UTC
- GMT to EST
- All time zones
Sources
Reviewed by Gurmej Singh, Founder, Divy Digital Hub · Last reviewed: Wednesday, September 30, 2026. All calculations run in your browser. Editorial policy.