Kolkata to San Francisco Time Converter
San Francisco is 13 hours 30 minutes behind Kolkata right now. 9:00 AM in Kolkata is 7:30 PM in San Francisco (the day before).
Time now: Kolkata and San Francisco
San Francisco is 13 hours 30 minutes behind Kolkata right now. The gap is not fixed: it is 13 hours 30 minutes at some times of the year and 12 hours 30 minutes at others, because at least one of them changes its clocks for daylight saving time.
Kolkata and San Francisco are about 12,574 km (7,813 miles) apart in a straight line. Right now Kolkata is on IST (UTC+05:30) and San Francisco is on PST (UTC-08:00).
Kolkata to San Francisco conversion table
Every hour of the day, using today's time difference.
| Kolkata | San Francisco |
|---|---|
| 12:00 AM | 10:30 AMprevious day |
| 1:00 AM | 11:30 AMprevious day |
| 2:00 AM | 12:30 PMprevious day |
| 3:00 AM | 1:30 PMprevious day |
| 4:00 AM | 2:30 PMprevious day |
| 5:00 AM | 3:30 PMprevious day |
| 6:00 AM | 4:30 PMprevious day |
| 7:00 AM | 5:30 PMprevious day |
| 8:00 AM | 6:30 PMprevious day |
| 9:00 AM | 7:30 PMprevious day |
| 10:00 AM | 8:30 PMprevious day |
| 11:00 AM | 9:30 PMprevious day |
| 12:00 PM | 10:30 PMprevious day |
| 1:00 PM | 11:30 PMprevious day |
| 2:00 PM | 12:30 AM |
| 3:00 PM | 1:30 AM |
| 4:00 PM | 2:30 AM |
| 5:00 PM | 3:30 AM |
| 6:00 PM | 4:30 AM |
| 7:00 PM | 5:30 AM |
| 8:00 PM | 6:30 AM |
| 9:00 PM | 7:30 AM |
| 10:00 PM | 8:30 AM |
| 11:00 PM | 9:30 AM |
Best time to meet between Kolkata and San Francisco
There is no overlap between 9 AM and 6 PM in both places.
If both sides can be flexible (7 AM – 10 PM):
- 7:00 AM – 12:00 PM Kolkata = 5:30 PM – 10:30 PM San Francisco
- 9:00 PM – 10:00 PM Kolkata = 7:30 AM – 8:30 AM San Francisco
The time difference changes during the year because of daylight saving time, so these windows shift by an hour at other times.
Does the time difference between Kolkata and San Francisco change?
Yes. Right now San Francisco is 13 hours 30 minutes behind Kolkata. These are the dates in the next 12 months when the gap changes:
- Sunday, 14 March 2027: San Francisco moves its clocks forward. San Francisco is 12 hours 30 minutes behind Kolkata from then (it was 13 hours 30 minutes before).
- Sunday, 7 November 2027: San Francisco moves its clocks back. San Francisco is 13 hours 30 minutes behind Kolkata from then (it was 12 hours 30 minutes before).
Office hours in each other's time
- 9 AM to 6 PM in Kolkata is 7:30 PM (previous day) to 4:30 AM in San Francisco.
- 9 AM to 6 PM in San Francisco is 10:30 PM to 7:30 AM (next day) in Kolkata.
Based on today's clock settings.
Frequently asked questions
What is the time difference between Kolkata and San Francisco?
San Francisco is 13 hours 30 minutes behind Kolkata right now. The gap is not fixed: it is 13 hours 30 minutes at some times of the year and 12 hours 30 minutes at others, because at least one of them changes its clocks for daylight saving time.
How do I convert Kolkata to San Francisco?
Subtract 13 hours 30 minutes from the Kolkata time to get the San Francisco time (at today's difference). 9:00 AM in Kolkata is 7:30 PM in San Francisco (the day before). Or use the converter above and pick any date and time.
What is the current time in San Francisco?
It is 4:20 PM in San Francisco on Monday, November 9 (the converter above shows it live). At the same moment it is 5:50 AM in Kolkata.
Does the time difference between Kolkata and San Francisco change during the year?
Yes. Right now San Francisco is 13 hours 30 minutes behind Kolkata. Over the next 12 months the gap changes 2 times: Sunday, 14 March 2027: San Francisco moves its clocks forward. San Francisco is 12 hours 30 minutes behind Kolkata from then (it was 13 hours 30 minutes before). Sunday, 7 November 2027: San Francisco moves its clocks back. San Francisco is 13 hours 30 minutes behind Kolkata from then (it was 12 hours 30 minutes before).
What is the best time for a meeting between Kolkata and San Francisco?
The two places have no shared working hours (9 AM – 6 PM). The nearest option is 7:00 AM – 12:00 PM Kolkata = 5:30 PM – 10:30 PM San Francisco.