15 August - The Assumption of Mary

The Assumption of Mary is the traditional belief held by Christians of the Roman Catholic, Eastern Orthodox, Oriental Orthodox, and some Protestant churches that the Virgin Mary at the end of her life was physically taken up into heaven.
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, and as the Dormition by Orthodox Christians. In those denominations that observe it, the Assumption is a major festival, commonly celebrated on August 15. This is a Holy Day of Obligation in many Roman Catholic jurisdictions.