The Tridentine Calendar included the feast day of Cyriacus, Largus and Smaragdus on 8 August as a Semidouble. In 1955 this rank was lowered to that of Simple. The 1962 Calendar, issued together with Pope John XXIII's Roman Missal, the licit private and, under certain conditions, public use of which was authorized by the 2007 motu proprio "Summorum Pontificum", reduced their celebration to a Commemoration. They are not included in the 1970 reformed Calendar of the Roman Rite liturgy, which was issued under the authority of Pope Paul VI, but, being included, all three, together with Memmia, Juliana and Smaragdus, in the Roman Martyrology, they are recognized saints of the Roman Catholic Church.