I was certain they were May 20th but I found out they are actually TOMORROW!! I have attended about the last 10 in a row but this one is looking like strong likelihood of rain. One of the last ones I went to looked the same way and then it held off and was a great (still crowded) night. I work in Milwaukee so I guess I'll have to gauge it and if it looks promising in the West direction at 5 PM I'll go, otherwise this one looks like it may get called :-(