Cantus Organi · Calendar

Octave Day of Christmas

Die Octavæ Nativitatis Domini

I class · White · next on Friday, 1 January 2027

Proper

Ordinary

Missa II — Kyrie fons bonitatis

Kyriale heading: “In Festis Solemnibus” (for Friday, 1 January 2027). NOH (1942) ranks feasts as doubles and semidoubles; the 1962 calendar uses classes. The correspondence used here is approximate.