Celebrate Harry Potter's Birthday Party at the Hyannis Public Library, 401 Main Street, Wednesday, July 31 from 2:00 - 3:30 p.m. Dress up as your favorite Harry Potter character or wear muggle attire. Enjoy a Sorting Hat Ceremony, crafts, games, guessing jar, prizes, birthday cake and other magical treats. Children ages 5 and up are welcome. Free and open to the public.