According to the 1962 Missal of St. John XXIII the Extraordinary Form of the Roman Rite, today is the feast of St. Agapitus, a martyr of Palestrina, not far from Rome. His cult, which is very ancient, was particularly popular in the eternal city where Felix III (492) caused a church to be built in his honor. Ancient inscriptions show clearly the great confidence placed in the intercession of this martyr. It is also the feast of St. Helena, empress and mother of Constantine the Great. She discovered the True Cross in a rock-cistern near Mt. Calvary.