Halloween originated over 3000 years ago when the Celtic people in areas of Ireland, England, Scotland and France celebrated the pagan festival of Samhain on October 31st to mark the end of the harvest season and the new year. When Irish immigrants came to America in the 1840s, they brought the tradition of Halloween. Today, Halloween is celebrated in both the United Kingdom and United States on October 31st with costumes, treats and spooky activities like visiting haunted houses and cemeteries. Common Halloween superstitions include bats flying in the home meaning it is haunted, seeing a black cat indicating a nearby witch, and using pumpkin lamps to guide family spirits.