IV class
Green
Commemoration of the Four Holy Crowned Martyrs (Sancti Quatuor Coronati)
Mass of preceding Sunday (Green), no Gloria, commemoration added, no Credo, common preface
OR
Mass of the Four Holy Crowned Martyrs (Red), 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