When Is Halloween Horror Nights 2024. The event begins at 7 p.m. September 4, 5, 6, 7, 8, 11, 12, 13, 14, 15, 18, 19, 20, 21, 22, 25, 26, 27, 28, and 29. When is halloween horror nights 2024? Our first house to walk through was the museum:
