Queenship of the Blessed Virgin Mary (August 22)
Following the feast of Mary's Assumption into Heaven on August 15, the feast of her Queenship celebrates her place among the angels and saints as the Queen of Heaven and Earth. From 1900 requests were sent to Rome asking for a feast of the Universal Queenship of Mary. After the institution of the feast of Christ the King (1925), the momentum for a Marian feast of queenship increased. In 1933 a cathedral in Port Said was dedicated to Mary Queen of the World. Pius XII wrote an encyclical on Mary's queenship (Ad coeli Reginam, 11 October 1954) and later in that Marian year he proclaimed a feast of the Queenship of Mary, to be celebrated on May 31. In that encyclical, Pope Pius wrote: "The purpose of the Feast is that all may recognize more clearly and venerate more devoutly the merciful and motherly sovereignty of her who bore God in her womb"
In the revised calendar it has become a memorial on the octave day of the Assumption - August 22. A prayer that we've come to know celebrates this title of Mary.
Hail, holy Queen, mother of mercy, our life, our sweetness,
and our hope. To thee do we cry, poor banished children of
Eve. To thee do we send up our sighs, mourning and
weeping in this valley of tears. Turn then, most gracious
advocate, Thine eyes of mercy toward us, and after this our
exile show unto us the blessed fruit of Thy womb, Jesus. O
clement, O loving, O sweet Virgin Mary.