Accoring to Roman Catholic theology and Catechism, the Virgin Mary, "having completed the course of her earthly life, was assumed body and soul into heavenly glory." This means that Mary was transported into Heaven with her body and soul united. The feast day recognizing Mary's passage into Heaven is celebrated as The Solemnity of the Assumption of the Blessed Virgin Mary by Roman Catholics. This doctrine was dogmatically and infallibly defined by Pope Pius XII on 1 November 1950 in his Apostolic Constitution Munificentissimus Deus. The Assumption of Mary into heaven, (often also called the Dormition,) is also taught by the Eastern Orthodox Church and the Oriental and Coptic Orthodox Churches In those denominations that observe it, the Assumption is commonly celebrated on August 15.