Halloween is celebrated on October 31st every year.
Halloween is a holiday celebrated primarily in the United States, Canada, Ireland, and the United Kingdom. It is believed to have originated from the ancient Celtic festival of Samhain, which marked the end of the harvest season and the beginning of the winter months. On Halloween, people dress up in costumes and go trick-or-treating for candy, carve pumpkins into jack-o'-lanterns, and tell scary stories.