San Francisco, United States
- Position
- 37.77°N, 122.4°W
- temperate latitudes, northern hemisphere
- Time zone
- America/Los_Angeles
- Clocks run 10 minutes ahead of the local sun
- Lines that can reach it
- All forty
- A body more than 52.2° from the celestial equator never rises or sets here
- Longest day
- 14 hours 37 minutes
- At the summer solstice
in the temperate middle latitudes, where the difference between a summer and a winter day is something you plan around