Primary tabs Upcoming List Month Week Day Remind Me Add To My Calendar Print Share Program Type: Adult Services, Children's Services Age Group: Children, Kinder to 2nd grade, 3rd to 7th grade, Teens, Adults, Families Program Description Event Details Get ready to take your O.W.L's in teams of 5-7 (as space allows) test your magical knowledge with Harry Potter Trivia. Exams will take place every 30 minutes.