The eighteenth day of September.
- 14: Tiberius succeeds Augustus as Roman Emperor.
- 28: John the Baptist begins his public ministry (early date).
- 96: Roman Emperor Nerva succeeds Domitian.
- 2006: Pope Benedict XVI decrees that all documents relative to the pontificate of Pope Pius XI be made available to researchers.
- 1930 Ignace Moussa I Cardinal Daoud of (Syria), Prefect of the Congregation for the Oriental Churches and former Syrian Rite Patriarch of Antioch.