It is customary to associate Halloween with the Celtic holiday of Samhain, which appeared in the 10th century. Originally, the Celts, who inhabited England, Ireland and the north of France, were separated by only two seasons: winter and summer. October 31 was considered the day of transition from summer to winter. This day meant the end of the harvest, and this was a very significant event for that time. Later, for many peoples, this holiday began to include everything related to the supernatural. This date was usually accompanied by rituals to exorcise demons from their homes and wild celebrations, and rituals are still held in some countries.