St. Basil's Day is celebrated on January 1st in many Christian traditions, particularly in Eastern Orthodox churches. The day honors St. Basil the Great, a prominent 4th-century bishop known for his contributions to Christian theology and monasticism. It marks the beginning of the new year in some cultures and is often associated with various customs and feasts. In Greece, St. Basil's Day is also linked to the tradition of cutting the Vasilopita, a special cake that contains a hidden coin. The person who finds the coin is believed to receive good luck for the year ahead. Celebrations often include family gatherings and religious services.