The Apparitions of Our Lady of Fatima refer to a series of visions experienced by three shepherd children—Lucia dos Santos, Francisco Marto, and Jacinta Marto—in 1917 in Fatima, Portugal. The children reported seeing a figure of the Virgin Mary, who conveyed messages about prayer, penance, and the importance of faith. These events occurred on the 13th of each month from May to October. The final apparition on October 13, 1917, was marked by the Miracle of the Sun, where thousands witnessed extraordinary solar phenomena. The messages from Our Lady of Fatima emphasized the need for peace and conversion, leading to the establishment of the Fatima devotion within the Catholic Church.