Two nights a year, there's an event called December Nights in Balboa Park. I should say one of these days starts in the afternoon and the other starts in the morning.
I went in the morning. Here're a few photos. I have zoo photos, too, because my wife and I went to the zoo before going to other stuff. We arrived shortly after 9 am. By the time of some performances around 3pm, my back was pretty sore from mostly standing. The event is going on still and it's 8:16 pm. I'm glad I'm not there now, though.