I've been talking to a lot of people lately that have noticed just how quickly the D.C. area has been losing daylight. In August alone, the area lost over an hour of daylight, from fourteen hours and ten minutes on the 1st all the way back to thirteen hours and four minutes on the 31st. Take a look at the graphic below, which will give you a good idea of the big milestones coming up.(Duration of Daylight in D.C.)
So far D.C. has lost two hours of daylight since the solstice, but that will jump to over three hours lost by the end of September. Unfortunately the area will be below twelve hours of daylight by then as well. We'll have to wait until October 20th for eleven hours of daylight, and November 17th for ten hours of daylight.
To find the duration of daylight for D.C. or anywhere in the U.S., go to this site here and go to form A, or look around the world in form B.