Time difference
Time difference between Kolkata and San Francisco
Find the best time to schedule a call or meeting.
San Francisco is currently 12 hours 30 minutes behind Kolkata.
Kolkata • GMT+5:30
6:52 PM
Thursday, Jun 18
San Francisco • PDT
6:22 AM
Thursday, Jun 18
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Best times to meet
Standard 9 AM – 5 PM hours in Kolkata and San Francisco 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 Kolkata, or a 6–8 PM meeting in San Francisco.
Quick conversion table
| Kolkata | San Francisco |
|---|---|
| 8 AM | 7:30 PM (prev day) |
| 12 PM | 11:30 PM (prev day) |
| 3 PM | 2:30 AM |
| 5 PM | 4:30 AM |
| 9 PM | 8:30 AM |
Daylight saving
Heads up: the gap will widen to 13.5 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 San Francisco than Kolkata?
- San Francisco is 12.5 hours behind Kolkata.
- What time is 9 AM in Kolkata in San Francisco?
- 9:00 AM in Kolkata is 8:30 PM the previous day in San Francisco.
- Do Kolkata and San Francisco observe daylight saving?
- Heads up: the gap will widen to 13.5 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 San Francisco from Kolkata?
- Kolkata and San Francisco business hours don't overlap. The closest options are early mornings in Kolkata or late evenings, when one side stretches outside 9–5.