Time difference
Time difference between Boston and Kolkata
Find the best time to schedule a call or meeting.
Kolkata is currently 9 hours 30 minutes ahead of Boston.
Boston • EDT
9:11 AM
Thursday, Jun 18
Kolkata • GMT+5:30
6:41 PM
Thursday, Jun 18
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Best times to meet
Standard 9 AM – 5 PM hours in Boston and Kolkata do not overlap. The least-bad options are an early start in one city or a late evening call in the other — for example a 7–8 AM meeting in Boston, or a 6–8 PM meeting in Kolkata.
Quick conversion table
| Boston | Kolkata |
|---|---|
| 8 AM | 5:30 PM |
| 12 PM | 9:30 PM |
| 3 PM | 12:30 AM (next day) |
| 5 PM | 2:30 AM (next day) |
| 9 PM | 6:30 AM (next day) |
Daylight saving
Heads up: the gap will widen to 10.5 hours around November 5, when one of the cities shifts for daylight saving. Double-check meeting times scheduled across that date.
Frequently asked questions
- How many hours ahead is Kolkata than Boston?
- Kolkata is 9.5 hours ahead of Boston.
- What time is 9 AM in Boston in Kolkata?
- 9:00 AM in Boston is 6:30 PM in Kolkata.
- Do Boston and Kolkata observe daylight saving?
- Heads up: the gap will widen to 10.5 hours around November 5, when one of the cities shifts for daylight saving. Double-check meeting times scheduled across that date.
- When is the best time to call Kolkata from Boston?
- Boston and Kolkata business hours don't overlap. The closest options are early mornings in Boston or late evenings, when one side stretches outside 9–5.