Proper Mass (Dominica infra Octavam Nativitatis) found in the Missal immediately after the Nativity; Credo; preface and Communicantes of the Nativity
Office of Dominica infra octavam Nativitatis, found in the Breviary immediately after the Nativity.
Matins: Invitatorium, Hymn, and 9 antiphons and psalms from the Nativity (joined, not said as three nocturns); verse as found at the conclusion of the psalms for the Nativity (in its third nocturn); scriptural lessons 1 and 2 (=2 and 3) with their responsories from Dec. 30; lesson 3 proper to the Sunday within the Octave; Te Deum
Lauds: All is provided in the breviary for the Sunday within the Octave (the antiphons are the same as those of the Nativity), Proper antiphons, with Sunday psalms of the first schema; remainder proper
Prime: Sunday psalms and antiphons (Psalm 117 Confitemini is used); responsory verse Qui natus es
Hours: Sunday psalms and antiphons; remainder proper
Vespers: Antiphons and psalms of the Nativity; remainder proper
Compline: Of Sunday