Question: During the Marian apparition of October 13, 1917 in Fatima approximately 70,000 spectators saw what miracle occur?
Bonus Question: In what country did this event occur?
Answer: Miracle of the Sun. On an overcast and rainy day, the sky suddenly cleared, the rain stopped and the sun spun and "danced" in the sky.
Bonus Answer: Portugal
For further reading:https://www.ewtn.com/fatima/apparitions/October.htm
http://www.fatima.org/essentials/facts/miracle.asp