Trick-or-Treating in downtown Pullman October 21, 2026 Danielle Kallaher Calendar When: October 31, 2026 @ 3:00 pm – 6:00 pm 2026-10-31T15:00:00-07:00 2026-10-31T18:00:00-07:00 Downtown Pullman Trick-or-Treating will be held from 3-6pm on Saturday at participating businesses.