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- December 26 - St. Stephen, first martyrs
- December 27 - St. John, apostle and evangelist
- December[Sunday between the Nativity and the Solemnity of Mary] - The Holy Family of Jesus, Mary and Joseph
- January - Baptism of the Lord
- February 2 - Presentation of the Lord
- February 14 - Saints Cyril and Methodius, patrons of Europe
- April 25 - St. Mark, evangelist
- April 29 - St. Catherine of Siena, virgin and doctor of the Church, patron of Europe
- May 14 - St. Matthias, apostle
- May 16 - St. Brendan, Patron of Diocese of Kerry
- June 9 - St. Columba [Colum Cille], abbot and missionary, secondary patron of Ireland
- July 3 - St. Thomas, apostle
- July 11 - St. Benedict, abbot, patron of Europe
- July 23 - St. Brigid of Sweden, religious, patron of Europe
- July 25 - St. James, apostle
- August 6 - The Transfiguration of the Lord
- August 10 - St. Lawrence, deacon and martyr
- August 24 - St. Bartholomew, apostle
- September 8 - Birthday of the Blessed Virgin Mary
- September 14 - The Triumph of the Cross
- September 21 - St. Matthew, apostle and evangelist
- September 29 - Saints Michael, Gabriel and Raphael, archangels
- October 28 - Saints Simon and Jude, apostles
- November 6 - All Saints of Ireland
- November 9 - Dedication of the Lateran Basilica
- November 30 - St. Andrew, apostle
