In the spring and summer of 1916, nine-year-old Lúcia Santos and her cousins Francisco and Jacinta Marto were herding sheep at the Cova da Iria near their home village of Aljustrel in the parish of Fátima, Portugal. They later said they were visited three times by an apparition of an angel. They said the angel, who identified himself as the "Angel of Peace" and "Angel of Portugal", taught them prayers, to make sacrifices, and to spend time in adoration of the Lord.
The three children claimed to have seen the Blessed Virgin Mary in a total of six apparitions between 13 May and 13 October 1917. 2017 marked the 100th anniversary that these apparitions appeared to the children and thousands of others, as God performed signs and wonders in the sky to attest that these miracles were bonafide from the Lord.