IV class
Green
Commemoration of St. Gorgonius, Martyr
In the USA: St. Peter Claver, Confessor
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