Samhain is an ancient Celtic festival celebrated on the night of October 31st, marking the end of the harvest season and the beginning of winter. It is believed that during this time, the boundary between the living and the dead becomes blurred, allowing spirits to roam the earth. People would light bonfires and wear costumes to ward off these wandering spirits, creating a festive atmosphere. Today, Samhain is often associated with modern celebrations like Halloween. Many traditions, such as carving pumpkins and trick-or-treating, have roots in this ancient festival. It serves as a time to honor ancestors and reflect on the cycle of life and death.