5:00 PM - 8:00 PM Boo at the Zoo October 29, 2023 5:00 PM - 8:00 PM Boo at the Zoo With six nights of “spell-a-bration,” there’s plenty of time to get into the Halloween spirit as the Zoo offers safe trick-or-treating and “monster-ous” thrills and chills. Zoo closes at 3:30 PM.