Within the Octave of the Immaculate Conception
Color: White
Flowers are permitted.
The organ may be played.
Commemorations: Advent Feria
Mass
After Terce, Commemoration of the Feria, 3rd. Orations of the Holy Ghost.
Gloria. Credo.
Preface: BVM ("Et in Conceptione Immaculata")
Office
Doxology: Incarnation (through None)
Hymn Tone: BVM (through None)
Lauds: Commemoration of the Feria
Prime: Verse = "Qui natus es"
Vespers: First Vespers of the following Sunday, Commemoration of the Octave Day