The good days to buy or begin in San Francisco: Guru Pushya, Ravi Pushya, Amrit Siddhi, Sarvartha Siddhi, Dwipushkar and Tripushkar yoga, with their timings.
Guru Pushya is Thursday in Pushya nakshatra, Ravi Pushya is Sunday in Pushya. Amrit Siddhi is a weekday in its own nakshatra (Sunday Hasta, Monday Mrigashira, Tuesday Ashwini, Wednesday Anuradha, Thursday Pushya, Friday Revati, Saturday Rohini). Sarvartha Siddhi is a weekday in one of its favorable nakshatras. Dwipushkar and Tripushkar fall on a Sunday, Tuesday or Saturday with Dwitiya, Saptami or Dwadashi tithi and a particular nakshatra; what is begun in them is said to repeat, so anything that could bring a loss is avoided. A weekday runs from sunrise to the next sunrise.
Times are local to San Francisco. A day runs from sunrise to sunrise, so a window after midnight belongs to the date above it.
Check a date against your own chart
These dates hold for everyone in the city. The Kaalvit app reads each one against a person's own Moon: chandra bala and tara bala across the window, with the reasons shown. Free on your own chart.