In the Christian liturgical calendar, there are several different Feasts of the Cross, all of which commemorate the cross used in the crucifixion of Jesus. Unlike Good Friday, which is dedicated to the passion of Christ and the crucifixion, these feast days celebrate the cross itself, as the sign of salvation. In Western Catholicism, Eastern Catholicism, Eastern Orthodoxy, Oriental Orthodoxy, Lutheranism and Anglicanism the most common day of commemoration is 14 September, or 27 September in churches still using the Julian calendar.
In English, the feast is called The Exaltation of the Holy Cross in the official translation of the Roman Missal, while the 1973 translation called it The Triumph of the Cross. In some parts of the Anglican Communion the feast is called Holy Cross Day, a name also used by Lutherans. The celebration is also sometimes called Holy Rood Day.
The Feast of the Exaltation of the Holy Cross, celebrated every year on 14 September, recalls three events:
The finding of the True Cross by Saint Helena.
The dedication of churches built by Emperor Constantine on the site of the Holy Sepulchre and Mount Calvary.
The restoration of the True Cross to Jerusalem in AD 629 by the Byzantine emperor Heraclius, after it had fallen into the hands of the Persian Emperor Chosroes II in the AD 614 Sasanian conquest of Jerusalem.
Under Emperor Constantine, around AD 327, Bishop Macarius of Jerusalem caused excavations to be made in order to ascertain the location of Calvary as well as that of the Holy Sepulchre. It was in the course of these excavations that the wood of the cross was recovered. It was determined by Macarius to be authentic (the crosses of the two thieves were also recovered) and for it Constantine built the Basilica of the Holy Sepulchre. Subequently, pieces of the True Cross relic were distributed across the empire and by the turn of the 5th century were venerated as far away as Italy.
The Ancient Georgian Iadgari (Chantbook) bears witness to the celebration of the Exaltation of the Cross in Jerusalem prior to the middle of the 6th century.