At their annual meeting, the US bishops voted to have add to the US liturgical calendar Blessed John Paul II and Blessed Marianne Cope, both are optional liturgical memorials in the proper of saints. October 22 is designated to honor Blessed John Paul and January 23 for Mother Marianne.
The Church sets dates for liturgical "memorials are typically set for the
date of the person's death, which in Mother Marianne's case was Aug. 9, 1918.
However, that date is the feast of St. Teresa Benedicta of the Cross (Edith
Stein), who died Aug. 9, 1942. Jan. 23 is the optional memorial in the United
States for St. Vincent de Paul. That date was transferred from Jan. 22 so that
the U.S. church can observe the Day of Prayer for the Legal Protection of
Unborn Children -- which itself shifts to Jan. 23 when Jan. 22 falls on a
Sunday."