Feast Day: October 9

Weekday with three Optional Memorials. Saint Denis, Bishop of Paris and martyr (3rd c.). Saint John Leonardi (1541-1609), founder of the Clerks Regular of the Mother of God. Saint John Henry Newman (1801-1890), declared Doctor of the Church by Pope Leo XIV in 2025 and added to the U.S. Calendar by USCCB emendation Feb 2026 (USCCB Liturgical Calendar 2026).