Traditional Latin Mass liturgical calendar

Wt 10.12 / 3rd class / Commemoration St. Melchiades

Śr 11.12 / 3rd class / Commemoration Feria IV after II Sunday of Advent

Cz 12.12 / 3rd class

Pt 13.12 / 3rd class / Commemoration Feria VI after II Sunday of Advent

So 14.12 / 3rd class

Nd 15.12 / 1st class

Pn 16.12 / 3rd class / Commemoration Feria II after III Sunday of Advent

Wt 17.12 / 2nd class

Śr 18.12 / 2nd class

Cz 19.12 / 2nd class

Pt 20.12 / 2nd class

So 21.12 / 2nd class / Commemoration Ember Saturday of Advent

Nd 22.12 / 1st class

Pn 23.12 / 2nd class

Wt 24.12 / 1st class

Śr 25.12 / 1st class

Cz 26.12 / 2nd class / Commemoration For Octave of the Nativity

Pt 27.12 / 2nd class / Commemoration For Octave of the Nativity

So 28.12 / 2nd class / Commemoration For Octave of the Nativity

Nd 29.12 / 2nd class

Pn 30.12 / 2nd class