IV class
Green
Commemoration of Sts. Tiburtius and Susanna, Martyrs
Mass of preceding Sunday (Green), no Gloria, commemoration added, no Credo, common preface
OR
Mass of the commemorated feast, Gloria, no Credo, common preface
Matins: Invitatorium and Hymn per annum as given in the psalter; lessons from occurring scripture, no Te Deum
Lauds: Antiphons and psalms of the feria (first schema); remainder per annum as given in the psalter; oration of the preceding Sunday; commemoration added
Hours: Antiphons and psalms of the feria; remainder per annum as given in the psalter; oration of the preceding Sunday
Vespers: Antiphons and psalms of the feria; remainder per annum as given in the psalter; oration of the preceding Sunday
Compline: Of the feria