I class
Violet
Traditional day of fast and abstinence
Funerals are not permitted
The Season of the Nativity begins with I Vespers
Proper Mass; no Gloria; after Gradual, omit Alleluia and following verse; no Credo; common preface
Matins: Invitatorium Hodie scietis and Hymn in Tempore Adventus; antiphons and psalms of the feria; proper verse; lessons from the homilia in Evangelium diei; no Te Deum
Lauds: Proper Antiphons and Sunday psalms (1st schema); remainder proper
Prime: Antiphon from Lauds, with Sunday psalms (Psalm 53 instead of 117); remainder proper
Hours: Sunday psalms with antiphons from Lauds; remainder proper
I Vespers: Of the Nativity of the Lord; proper antiphons with Sunday psalms, except Ps. 116 as fifth psalm; remainder proper; no commemoration of Sunday
Compline: Of Sunday; Nativity versicle (Post partum) after Marian antiphon until February 1