IST to Boston Time Converter
EST is 10 hours 30 minutes behind IST. 9:00 AM IST = 10:30 PM EST (previous day).
EST is 10 hours 30 minutes behind IST at the moment. To convert IST to Boston Time, subtract 10 hours 30 minutes from the IST time: 9:00 AM IST = 10:30 PM EST (previous day).
IST (India Time) is used in India and Sri Lanka (UTC+5:30, no daylight saving time). Boston Time (Boston time) is used in Boston, USA.
IST here means India Standard Time, not Irish or Israel Standard Time.
IST to Boston Time time conversion table
IST to Boston Time on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| IST | Boston Time |
|---|---|
| 12:00 AM | 1:30 PM−1 |
| 1:00 AM | 2:30 PM−1 |
| 2:00 AM | 3:30 PM−1 |
| 3:00 AM | 4:30 PM−1 |
| 4:00 AM | 5:30 PM−1 |
| 5:00 AM | 6:30 PM−1 |
| 6:00 AM | 7:30 PM−1 |
| 7:00 AM | 8:30 PM−1 |
| IST | Boston Time |
|---|---|
| 8:00 AM | 9:30 PM−1 |
| 9:00 AM | 10:30 PM−1 |
| 10:00 AM | 11:30 PM−1 |
| 11:00 AM | 12:30 AM |
| 12:00 PM | 1:30 AM |
| 1:00 PM | 2:30 AM |
| 2:00 PM | 3:30 AM |
| 3:00 PM | 4:30 AM |
| IST | Boston Time |
|---|---|
| 4:00 PM | 5:30 AM |
| 5:00 PM | 6:30 AM |
| 6:00 PM | 7:30 AM |
| 7:00 PM | 8:30 AM |
| 8:00 PM | 9:30 AM |
| 9:00 PM | 10:30 AM |
| 10:00 PM | 11:30 AM |
| 11:00 PM | 12:30 PM |
Conversion table from IST to Boston Time for 7 Nov 2026. A tick marks hours that fall between 9 AM and 5 PM in both places. +1 means the next day in Boston Time, −1 the previous day.
- ✓ marks 9 AM–5 PM in both places
- Greyed times are night in the destination (10 PM–6 AM)
How to convert IST to Boston Time
Subtract 10 hours 30 minutes from the IST time to get Boston Time.
Example: 9:00 AM IST = 10:30 PM EST (previous day).
Across midnight: 1:00 AM IST = 2:30 PM EST (previous day). The date changes, so always check the day as well as the hour.
Time difference between IST and Boston Time
The time difference between IST and Boston Time is not the same all year, because the two sides change for daylight saving time on different dates. In 2026 it works out like this:
- 1 Jan 2026 – 7 Mar 2026: Boston Time is 10 hours 30 minutes behind of IST.
- 8 Mar 2026 – 31 Oct 2026: Boston Time is 9 hours 30 minutes behind of IST.
- 1 Nov 2026 – 31 Dec 2026: Boston Time is 10 hours 30 minutes behind of IST.
IST and Boston Time during daylight saving time
- IST does not observe daylight saving time; it stays on UTC+5:30 all year.
- Boston Time next changes on 14 Mar 2027: clocks go forward one hour at 01:59 local time, from EST (UTC−5) to EDT (UTC−4).
Best time for a meeting between IST and Boston Time
IST and Boston Time have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM IST, which is 8:30 PM EST.
IST to Boston Time FAQ
What is the time difference between IST and Boston Time?
Right now EST is 10 hours 30 minutes behind IST. The gap changes 3 times in 2026 because the two sides switch to daylight saving time on different dates.
What is 9 AM IST in Boston Time?
9:00 AM IST is 10:30 PM EST (previous day).
What is 12 PM (noon) IST in Boston Time?
12:00 PM IST is 1:30 AM EST.
Is Boston Time ahead of or behind IST?
EST is 10 hours 30 minutes behind IST, so it is earlier in Boston Time than in IST.
Does IST change for daylight saving time?
No. IST stays on the same offset all year, so conversions never shift for daylight saving time.
Does Boston Time change for daylight saving time?
Yes. Boston Time next changes on 14 Mar 2027, when clocks go forward one hour from EST to EDT.
What is the best time for a meeting between IST and Boston Time?
IST and Boston Time have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM IST, which is 8:30 PM EST.
Related conversions
Convert Boston Time to IST
Convert IST to other time zones
Convert other time zones to Boston Time
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.