22 August - Queen of Heaven (Regina Caeli) is a title given to Mary, mother of Jesus. The Catholic Church declares, as a dogma, that Mary was raised to heaven and that she dwells with Jesus Christ, her divine son.

Mary Queen" is a Marian feast of the Catholic Church, created by Pope Pius XII. On 11 October 1954, the Pontiff, in his encyclical Ad caeli reginam, instituted a new feast day in the liturgical calendar, 31 May (the last day of the Marian month). The initial ceremony of this feast involved the crowning of the icon of Mary of Salus populi romani in Rome by Pius XII in a procession.

In 1969, Pope Paul VI postponed the feast to 22 August, eight days after the Assumption, in order to underline the close link between Mary's royalty and her bodily and spiritual glorification at the side of her Son. The Second Vatican Council's Constitution Lumen gentium states that "[Mary] was raised body and soul to the glory of heaven, and exalted by the Lord as Queen of the universe, so that she might be more fully conformed to her Son, Lord of lords".