Within the Octave of the Nativity, I and II class votive Masses of the Dead are permitted.
Proper Mass; Gloria; commemoration of the Octave of the Nativity; Credo; preface and Communicantes of Nativity.
Matins: Invitatorium Regem Martyrum; Hymn Audit tyrannus; 3 nocturns: the 8th psalm (in the 3rd nocturn) has a proper antiphon Isti sunt; Te Deum
Lauds: Proper antiphons with Sunday psalms; Hymn Salvete, flores; commemoration of the Octave of the Nativity
Prime: Verse Qui natus es
Hours: Ferial antiphons and psalms
I Vespers: Of the Sunday within the Octave of the Nativity; antiphons and psalms from the Nativity; remainder proper
Compline: Of Sunday