Today the Church celebrates the Feast of the Dedication of the Lateran Basilica in Rome – the Cathedral of Rome. Many people believe that the Cathedral of Rome is St Peter’s but it is not. It is The Basilica of St John Lateran, sometimes known as the Church of Holy Saviour, or the Church of St John Baptist. In ancient Rome it was the baptism church. The Basilica was built in the time of Constantine and was consecrated by Pope Sylvester in 324 A.D. The Feast is a universal celebration in honour of the basilican called “the mother and mistress of all churches of Rome and the world” as a sign of love for and union with the See of Peter.
In the calendar of the Missal promulgated by Bl. John XXIII today is also the commemorationof St Theodore, a Christian soldier and martyr of Asia Minor.