Halloween is celebrated annually on October 31st. In 2023, Halloween falls on Tuesday, October 31st. While the day of the week Halloween falls on changes every year, the date remains the same. Halloween is not a public holiday, and businesses have normal opening hours. Celebrations include costume parties, trick-or-treating, and other events that may be planned on October 31st or in the weekends before and after this date. Halloween originated as a pagan festival in parts of Northern Europe, particularly around what is now the United Kingdom, and immigrants from Scotland and Ireland brought the holiday to the United States.