Pope Leo XIV's first apostolic journey will take him to Turkey and Lebanon from November 27 to December 2.
The Council of Nicaea, convened in 325 by Emperor Constantine, was a turning point in Christian history, producing the original formulation of the Nicene Creed and setting out to unify the date of Easter across the Church.
The pope will depart from Rome's Fiumicino Airport on Thursday, Nov. 27, arriving in Ankara at midday.
The trip will center on two key moments.
Author's summary: Pope Leo XIV visits Turkey and Lebanon.