of Hungary repulsed an Ottoman invasion of the Balkans by breaking the siege of Belgrade. News of the victory arrived in Rome on August 6. Given the importance to international politics at that time of such battles between Christian and Muslim nations, in celebration of the victory Pope Callixtus III elevated the Transfiguration to a Feast day to be celebrated in the entire Roman rite. In 2002, Pope John Paul II selected the Transfiguration as one of the five Luminous Mysteries of the rosary. Old Catholic Church The Old Catholic Church celebrates the Transfiguration typically on August 6, according to the Roman rite calendar; however, every local Old Catholic Church throughout the world has the option to celebrate this major feast on a different day. The Old Catholic theological view of the Transfiguration shares much in common with the Eastern Orthodox perspective. Old Catholics also believe that the transfiguration was a major event that revealed the divinity of Christ; that Jesus is indeed the splendor and eikon of the Father. The Transfiguration shows forth humanity in the splendor of its original form when it was united in the life-giving love of the Triune God. This event reveals the possibility of humanity's theosis. If the Transfiguration falls on a Sunday, it replaces the ordinary liturgical Ordo of the season for Sacred Liturgy. Anglican Communion In the Book of Common Prayer (1549 and 1552) the feast of the Transfiguration, which had had a relatively low rank in the Sarum Calendar, is omitted, but was restored to the Calendar, without a collect and reading being provided, by royal order in 1560. This state of affairs is perpetuated in the 1662 Prayer Book, but have been remedied had the 1928 Proposed BCP been approved by Parliament. As it was, the Bishops of the Church of England refused to sanction those who used the abortive 1928 Book of Common Prayer, and the August 6th date came into general use. The Feast of the Transfiguration is retained in the Common Worship lectionary of the Church of England (6 August). The American Book of Common Prayer of 1892 introduced it to Episcopalian use, and from there it has been taken into most modern Anglican calendars (sometimes called "The Transfiguration of Our Lord"). Protestantism After the Reformation the Feast of the Transfiguration was abandoned in the Protestant parts of Germany, but continued to be observed in Sweden. Lutheran