She appeared six times to three shepherd children from May 13, 1917 until October 13. 1917. This happened in Fatima 100 years ago. Today, millions of people are celebrating the Feast of Our Lady of Fatima until October 13, the longest celebration ever.
Every time Our Lady appeared to the children, her request is to pray the Rosary everyday to bring peace to the world and an end of the war.
Our Lady also promised that God would work a great miracle the following October “so that all may believe.” On October 13 1917, in the presence of 70,000 eyewitnesses, a miracle was worked in the sky above Fatima at the exact moment and in the precise spot that the children had announced earlier. Witnesses recounted that the sun appeared to actually “dance” in the sky and seemed to fall to the ground before resuming its normal place in the heavens.
“On the last month, I will perform a miracle so that all may believe.”
This event has now become known as “The Miracle of the Sun” and has been justly characterized as the greatest supernatural occurrence of the 20th Century. As one leading Fatima authority has noted, this great miracle “does not belong (only) to the domain of faith, or even that of science. Before all else it is an historical event.”
source: The Story of Fatima