once admitted not knowing why the Feast of the Divine Maternity, in the old Roman calendar,
used to be celebrated on October 11. I think you'll find that this feast was first celebrated
on October 11, 1931, the 1,500th anniversary of the proclamation of the dogma that Mary
is the Theotokos, issued by the Council of Ephesus in 431 A.D.
right. This feast of the Maternity of Mary was one of 16 feasts of devotion added to the general
calendar of the Church over the last three centuries.
This feast was removed from October 11 when the calendar reform that went into effect
in 1970 placed the celebration of the Solemnity of Mary, the Mother of God, on January
1, the octave of Christmas