Kolkata Time to EST 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 Kolkata Time to EST, subtract 10 hours 30 minutes from the Kolkata Time time: 9:00 AM IST = 10:30 PM EST (previous day).
Kolkata Time (Kolkata time) is used in Kolkata, India. EST (Eastern Time) is used in New York, Washington DC, Florida, Georgia, Ohio, Michigan, Ontario, Quebec, Panama and Jamaica (all year).
Kolkata Time to EST time conversion table
Kolkata Time to EST on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| Kolkata Time | EST |
|---|---|
| 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 |
| Kolkata Time | EST |
|---|---|
| 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 |
| Kolkata Time | EST |
|---|---|
| 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 Kolkata Time to EST 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 EST, −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 Kolkata Time to EST
Subtract 10 hours 30 minutes from the Kolkata Time time to get EST.
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 Kolkata Time and EST
The time difference between Kolkata Time and EST 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: EST is 10 hours 30 minutes behind of Kolkata Time.
- 8 Mar 2026 – 31 Oct 2026: EST is 9 hours 30 minutes behind of Kolkata Time.
- 1 Nov 2026 – 31 Dec 2026: EST is 10 hours 30 minutes behind of Kolkata Time.
Kolkata Time and EST during daylight saving time
- Kolkata Time does not observe daylight saving time; it stays on UTC+5:30 all year.
- EST 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 Kolkata Time and EST
Kolkata Time and EST 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.
Kolkata Time to EST FAQ
What is the time difference between Kolkata Time and EST?
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 Kolkata Time in EST?
9:00 AM IST is 10:30 PM EST (previous day).
What is 12 PM (noon) Kolkata Time in EST?
12:00 PM IST is 1:30 AM EST.
Is EST ahead of or behind Kolkata Time?
EST is 10 hours 30 minutes behind IST, so it is earlier in EST than in Kolkata Time.
Does Kolkata Time change for daylight saving time?
No. Kolkata Time stays on the same offset all year, so conversions never shift for daylight saving time.
Does EST change for daylight saving time?
Yes. EST 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 Kolkata Time and EST?
Kolkata Time and EST 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.
Is ET the same as EST?
EST is the winter (standard) name of Eastern Time (ET). From March to November the same clocks are called EDT. This converter always uses the one in force on the date you choose.
Related conversions
Convert EST to Kolkata Time
Convert Kolkata Time to other time zones
Convert other time zones to EST
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.