Dedication of the Archbasilica of the Holy Savior–W (II) – St. Theodore, Martyr–R (Comm.)

It is the oldest and ranks first among the five Papal Basilicas of the world and the four Major Basilicas of Rome (all of which are also Papal basilicas), being the oldest church in the West and having the Cathedra of the Bishop of Rome. It has the title of ecumenical mother church among Roman Catholics.