I tend to be a daylight person. I seldom venture out after dark. I really should move about at night more often when I travel. Places take on a different look in the dark. Night time sight seeing in Washington DC can be a very pleasant experience. Unless there is a major event in the downtown arena, mid to late evening can bring the lightest traffic of the day, making driving in the city a tolerable experience. Time to start the music, for night moves.