I'm impatient for long days.
Googling around, I found this new service from the US Naval Observatory web page that generates a customized duration of daylight/darkness table for one year for up to 22,000 U.S. locations. (Click on "Data Services".)
Yesterday, I learned that San Francisco got 11 hours and 31 minutes of daylight. Moreover, we'll get 30-minute increases of daylight every 12-14 days until May 27, by which point we'll have 14.5 hours of daylight every day.
After May 27, the rate of increase slows down until we reach our maximum on June 18: 14 hours and 47 minutes. We get that 14 hours and 47 minutes for seven days in a row! Then the daylight begins to decrease. But it's not until August 4 that it falls off at the rate of 30-minutes every 12-14 days.
December 18 through December 25 are our darkest days: only 9 hours and 33 minutes of daylight.