St Catherine rates only a memorial in the 1963 calendar, a grave injustice in my view for this important doctor of the Church.
In any case, here are the readings for her feast from Matins in the Roman Office from Divinum Officium:
This Katharine was a maiden of Sienna, and was born of godly parents, (in the year 1347.) She took the habit of the Third Order of St Dominick. Her fasts were most severe, and the austerity of her life wonderful. It was discovered that on some occasions she took no food at all from Ash Wednesday till Ascension Day, receiving all needful strength by taking the Holy Communion. She was engaged oftentimes in a wrestling with devils, and was sorely tried by them with divers assaults : she was consumed by fevers, and suffered likewise from other diseases. Great and holy was the name of Katharine, and sick folk, and such as were vexed with evil spirits, were brought to her from all quarters. Through the Name of Christ, she had command over sickness and fever, and forced the foul spirits to leave the bodies of the tormented.
While she dwelt at Pisa, on a certain Lord's Day, after she had received the Living Bread Which came down from heaven, she was in the spirit; and saw the Lord nailed to the Cross advancing towards her. There was a great light round about Him, and five rays of light streaming from the five marks of the Wounds in His Feet, and Hands, and Side, which smote her upon the five corresponding places in her body. When Katharine perceived this vision, she besought the Lord that no marks might become manifest upon her flesh, and straightway the five beams of light changed from the colour of blood into that of gold, and touched in the form of pure light her feet, and hands, and side. At this moment the agony which she felt was so piercing, that she believed that if God had not lessened it, she would have died. Thus the Lord in His great love for her, gave her this great grace, in a new and twofold manner, namely, that she felt all the pain of the wounds, but without there being any bloody marks to meet the gaze of men. This was the account given by the handmaiden of God to her Confessor, Raymund, and it is for this reason that when the godly wishes of the faithful lead them to make pictures of the blessed Katharine, they paint her with golden rays of light proceeding from those five places in her body which correspond to the five places wherein our Lord was wounded by the nails and spear.
While she dwelt at Pisa, on a certain Lord's Day, after she had received the Living Bread Which came down from heaven, she was in the spirit; and saw the Lord nailed to the Cross advancing towards her. There was a great light round about Him, and five rays of light streaming from the five marks of the Wounds in His Feet, and Hands, and Side, which smote her upon the five corresponding places in her body. When Katharine perceived this vision, she besought the Lord that no marks might become manifest upon her flesh, and straightway the five beams of light changed from the colour of blood into that of gold, and touched in the form of pure light her feet, and hands, and side. At this moment the agony which she felt was so piercing, that she believed that if God had not lessened it, she would have died. Thus the Lord in His great love for her, gave her this great grace, in a new and twofold manner, namely, that she felt all the pain of the wounds, but without there being any bloody marks to meet the gaze of men. This was the account given by the handmaiden of God to her Confessor, Raymund, and it is for this reason that when the godly wishes of the faithful lead them to make pictures of the blessed Katharine, they paint her with golden rays of light proceeding from those five places in her body which correspond to the five places wherein our Lord was wounded by the nails and spear.And if you would, please say a prayer for me on my name day!
