Halloween is celebrated on October 31st each year. This day has its origins in ancient Celtic festivals, particularly Samhain, when people would light bonfires and wear costumes to ward off ghosts. Over time, Halloween evolved into a more community-centered holiday, with activities such as trick-or-treating, costume parties, and festive gatherings. It is also associated with a range of spooky themes, including ghosts, witches, and other supernatural elements. Today, Halloween is widely celebrated in various countries, particularly in the United States, where it has become an integral part of American culture.