The thirteenth day of May.
- 1917: Pope Benedict XV elevates Eugenio Maria Giuseppe Giovanni Pacelli (later Pope Pius XII) to archbishop of Sardis.
- 1981:' Assassination attempt. Turkish gunman Mehmet Ali Ağca shoots and critically wounds Pope John Paul II. Following the shooting, the pope asked people to "pray for my brother (Ağca), whom I have sincerely forgiven."