Bangalore is 13 hours and 30 minutes ahead of San Francisco. Bangalore uses India Standard Time (IST, UTC+5:30) while San Francisco uses Pacific Time (PST, UTC-8 in winter and PDT, UTC-7 in summer). When it's 9:00 PM in Bangalore, it's 7:30 AM in San Francisco.
The time difference varies between 12.5-13.5 hours depending on whether San Francisco is observing daylight saving time. India does not observe DST.
Best calling time: 7:00 PM - 11:00 PM Bangalore time. This corresponds to 5:30 AM - 9:30 AM in San Francisco, catching early morning hours on the US West Coast.
This is one of the most important business routes in tech. Bangalore is India's tech capital, and San Francisco/Silicon Valley is the world's leading tech hub. Many companies have engineering teams in both cities.