Motherhood Of The Blessed Virgin Mary - 11 October

Quoted from traditionalcatholic.net [1]:

The celebration on this day throughout the Western church of a feast in honour of the Motherhood of the Blessed Virgin Mary, Mother of God, was enjoined by Pope Pius XI in the encyclical "Lux veritatis", published on December 25, 1931, in view of the fifteenth centenary of the Council of Ephesus.

 

Quoted from Sensus Fidelium [2]:

Proceeding to speak of the special dignity of the Blessed Virgin Mary, the Pope emphasizes that, “because she brought forth the Redeemer of mankind, she is also in a manner the most tender Mother of us all, whom Christ our Lord deigned to have as his brothers; wherefore we may confidently entrust to her all things that are ours, our joys, our troubles, our hopes; especially if more difficult times fall upon the Church—if faith fail because charity has grown cold, if private and public morals take a turn for the worse.”

[1] http://www.traditionalcatholic.net/Tradition/Calendar/10-11.html#:~:text=Motherhood%20of%20the%20Blessed%20Virgin%20Mary%20The%20celebration,the%20fifteenth%20centenary%20of%20the%20Council%20of%20Ephesus.

[2] https://sensusfidelium.us/the-liturgical-year-dom-prosper-gueranger/october/october-11-the-motherhood-of-the-blessed-virgin-mary/