Feast Of The Queenship Of Mary - 31 May

Quoted from Fr. Z's blog [1]:

31 May is liturgically complicated.  In the traditional calendar it is the Feast of the Queenship of Mary.  In the Novus Ordo, it is the Feast of the Visitation.  Again in the Novus Ordo, Queenship of Mary is on 22 August, which in the TLM [Traditional Latin Mass] calendar is [The Feast Of The] Immaculate Heart [Of The Blessed Virgin Mary].

Quoted from The American TFP [2]:

Pope Pius XII in the Papal Encyclical Ad Caeli Reginam  proposed the traditional doctrine on the Queenship of Mary and established this feast for the Universal Church.

Blessed Pope Pius IX said of Mary’s Queenship: “Turning her maternal Heart toward us and dealing with the affair of our salvation, she is concerned with the whole human race. Constituted by the Lord Queen of Heaven and Earth, and exalted above all choirs of Angels and the ranks of Saints in Heaven, standing at the right hand of Her only begotten Son, Our Lord Jesus Christ, she petitions most powerfully with Her maternal prayers, and she obtains what she seeks.”

[1] https://wdtprs.com/2021/05/31-may-marys-queenship-and-yet-more-mother-than-queen/

[2] https://www.tfp.org/the-queenship-of-mary/, without hyperlink.