IV class
White
Commemoration of St. Telesphorus, Pope and Martyr
IV class Votive Masses are permitted, but IV class Requiem Masses are not (until January 13 inclusive).
Mass of the feria (White); Gloria; commemoration added; no Credo; preface of the Nativity
Nota bene: The principal parts of the office during these seasonal ferias are from January 1, but are all listed together for convenience in the Ordinarium, under Time of the Nativity
Matins: Invitatorium and Hymn from the Time of the Nativity; psalms and antiphons of the feria; scripture lessons proper to January 5; Te Deum
Lauds: Psalms and antiphons of the feria; capitulum and following from Time of the Nativity; commemoration of St. Telesphorus
Prime: Psalms and antiphons of the feria; Verse Qui natus es
Hours: Psalms and antiphons of the feria; capitulum and following from Time of the Nativity
I Vespers: Of the Epiphany; proper antiphons with Sunday psalms (fifth psalm is 116); remainder proper
Compline: Of Sunday