Halloween Horror Nights 2024 Hollywood Dates.  — at universal studios hollywood, hhn will operate every thursday, friday, saturday, and sunday from sept. Spooky season will descend upon universal studios hollywood before you know it —.

 — the 2024 event is loaded to the rafters with haunted houses, attractions, scare zones, shows, and more. Brave frogs who wish to confront their worst nightmares can scare up.