Celebrated on August 1, it was a liturgical feast (commemorating the Liberation of Saint Peter) in the pre-1962 General Calendar of the Roman Rite (see Tridentine Calendar, General Roman Calendar as in 1954 and General Roman Calendar of Pope Pius XII).
In the Orthodox Church, the feast of the "Veneration of the Precious Chains of the Holy and All-Glorious Apostle Peter" is celebrated on January 16.