Philadelphia, PA - Let the snow fly in South Philly! For the first time ever, Gilson Snow will bring their annual summer outdoor festival and rail jam to Philadelphia. Gilson Summer Snow Day will pop up at Xfinity Live! on Saturday, July 16th, with real snow, snowboarding competitions, ice carving, ski artist showcase, apres-ski lodge, live music, 50+ drink samples, games, and the Knoebels Kids Zone with rock climbing, bounce house and more.