St. Callistus I, Pope & Martyr

Color: Red

Penance: Abstinence

Mass

After Terce, no Commemorations.

Gloria. No Credo.

Preface: Common

Office

Doxology: Per Annum

Hymn Tone: Ordinary

Vespers: Vespers are split; from the Chapter onward of the following day, Commemoration of St. Callistus