when does halloween start

Halloween starts on October 31 each year. It’s observed globally on that date, with activities such as costumes, trick-or-treating, and spooky decorations typically taking place in the evening and into the night. If you’re asking about a specific country or local event, the exact start time or official schedule may vary by venue (for example, store hours, Halloween parades, or trick-or-treating windows), but the calendar date remains October 31. If you’d like, specify a location and I can give more precise timing for activities in that area.