I class
Violet
Mass of the II Sunday of Advent; Gloria omitted; Credo; preface of the Holy Trinity
Matins: Invitatorium and Hymn in Tempore Adventus; Advent antiphons with Sunday psalms; lessons from the occurring scripture and from the homilia in Evangelium diei; no Te Deum
Lauds: Proper antiphons with Sunday psalms (1st schema); hymn and verse in Tempore Adventus, capitulum, Benedictus antiphon, and oration proper
Hours: Proper antiphons for the respective hours taken from Lauds, with Sunday psalms; responsory in Tempore Adventus, capitulum and oration proper
II Vespers of the Sunday (see below*): Proper antiphons with Sunday psalms; hymn and verse in Tempore Adventus, capitulum, Magnificat antiphon, and oration proper; commemoration of I Vespers of the Immaculate Conception
*Rubric of concurrence governed by Rubricae generales, 105. The Advent Sunday and the Feast of the Immaculate Conception are of the same class, I class, so Vespers are said of the current, with commemoration of the following. The Feast being listed higher than the Sunday in the table of precedence would be taken into account for occurrence and transfer, when they occur on the same day, but not for concurrence at Vespers, when they are on adjoining days.)
Compline: Of Sunday