The San Francisco Bay Area, encompassing San Francisco, San Jose, Sunnyvale, Fremont, and the Silicon Valley corridor, is home to over 500,000 Indians, the largest concentration of Indian tech professionals anywhere in the world. At companies like Google, Apple, Microsoft, Amazon, Meta, and thousands of startups, Indian engineers and executives are overrepresented relative to any demographic. The Indian communities of Fremont (one of the highest Indian-American population percentages of any US city), Sunnyvale, Milpitas, and San Jose have vibrant temples (the Shiva-Vishnu Temple in Livermore draws thousands), Indian grocery stores, and cultural organisations.
San Francisco uses Pacific Time, PST (UTC-8) in winter and PDT (UTC-7) in summer, which is 13.5 hours behind IST in winter and 12.5 hours behind in summer. This is the largest IST-offset error of any major Indian diaspora city. An IST-based app shows Bay Area residents a Rahu Kaal that is more than half a day off. Sunrise ranges from 5:47 AM in June to 7:27 AM in December, a 100-minute seasonal variation. CosmosPandit calculates from San Francisco's exact coordinates (37.7749°N, 122.4194°W).
The Bay Area Indian community is heavily Gujarati (particularly in the Fremont-Milpitas corridor), Telugu (the Andhra and Telangana tech professional community), Hindi, Tamil, Punjabi, and Marathi. CosmosPandit serves all 8 Indian languages with Bay Area-correct timings.
Astronomically precise Rahu Kaal timings for 25 major Indian cities.