The First Saturday votive Mass may be said: “one Mass of the Immaculate Heart of the Blessed Virgin Mary, on the first Saturday of each month, in churches and oratories in which special devotions are held on that day in honor of the Immaculate Heart of Mary” (Rubricæ generales, 385c).
First Saturday votive: (White) Mass of August 22, Gloria, commemoration of St. Monica, no Credo, preface of the BVM with Et te in veneratione.
Mass of the feast: St. Monica (White); Gloria, no Credo, preface of Easter
Matins: Invitatorium and Hymn from the Common, antiphon Alleluia and psalms of the feria, first two lessons from occurring Scripture (second and third joined), third lesson proper, Te Deum
Lauds: Antiphon Alleluia and psalms of the feria (first schema); remainder from the Common; oration proper
Hours: Antiphon Alleluia and psalms of the feria; remainder from the Common
I Vespers: Of II Sunday after Easter, antiphon Alleluia and psalms of Saturday, remainder proper
Compline: Of Saturday