Traditional Latin Mass Calendar - December 21st, 2020 to December 27th, 2020 - Ordo for the Week | Nativity of Our Lord

Image Credit: Wikimedia Commons - LeBrun, Charles - Adoration of the Shepherds

TEMPUS ADVENTUS
HEBDOMADAM QUARTA ADVENTUS

Monday, 21st - St. Thomas, Apostle, S. Thomæ Apostoli, Missa 'Mihi Autem', 2nd Class, Red [Gloria & Creed; Preface of the Apostles; Commemoration: Greater Feria of Advent; Magnificat Antiphon: "O Oriens"]
Tuesday, 22nd - Greater Feria of Advent, Feria Tertia infra Hebdomadam IV Adventus, Missa 'Roráte', 2nd Class, Violet [Common Preface or Preface of Advent; Magnificat Antiphon: "O Rex"]
Wednesday, 23rd - Greater Feria of Advent, Feria Quarta infra Hebdomadam IV Adventus, Missa 'Roráte', 2nd Class, Violet [Common Preface or Preface of Advent; Preces; Magnificat Antiphon: "O Emmanuel"]
Thursday, 24th - Vigil of the Nativity of Our Lord, In Vigilia Nativitatis Domini, Missa 'Hódie Sciétis', 1st Class, Violet [Common Preface or Preface of Advent; 1st Vespers of the Nativity of Our Lord]

TEMPUS NATIVITATIS (Christmastide)
IN OCTAVA NATIVITATIS DOMINI

Friday, 25th - The Nativity of Our Lord: Missa Prima - First Mass at Midnight, Missa 'Dominus Dixit', In Nativitate Domini in nocte; Missa Secunda - Second Mass at Dawn, In Nativitatis Domini in Aurora, Missa 'Lux Fulgébit'; Missa Tertia - Third Mass During the Daytime, In Die Nativitatis Domini, Missa 'Puer Natus Est', 1st Class, White [Gloria & Creed; Preface of the Nativity; Commemoration at Dawn: St. Anastasia, Martyr; 2nd Vespers of the Nativity of Our Lord]
Saturday, 26th - St. Stephen, Deacon & Protomartyr, S. Stephani Protomartyris, Missa 'Sedérunt Príncipes', 2nd Class, Red [Gloria & Creed; Preface of the Nativity; Commemoration: Day in the Octave of Christmas; 2nd Vespers of St. Stephen, Deacon & Protomartyr with Commemoration of 1st Vespers of Sunday in the Octave of Christmas]
Sunday, 27th - Sunday in the Octave of Christmas, Dominica Infra Octavam Nativitatis, Missa 'Dum Médium', 2nd Class, White [Gloria & Creed; Preface of the Nativity; Commemoration: St. John, Apostle & Evangelist; 2nd Vespers of Sunday in the Octave of Christmas]

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