Feast of The Prayer of Christ (Masses in Some Places)

Each year on the Tuesday after Septuagesima there was celebrated a "Mass in Some Places," according to the 1955 Missal. This special Mass is for The Prayer of Christ and has been around for several hundred years.  The Catholic Encyclopedia summarizes this special feastday that is worthy of our meditation:

This feast occurs on the Tuesday after Septuagesima (double major). Its object is to commemorate the prolonged prayer which Christ offered in Gethsemane in our behalf in preparation for His Sacred Passion. 

The Office insists on the great importance of prayer. The feast is placed at the beginning of Lent to remind us that the penitential season is above all a time of prayer. The Office probably was composed by Bishop Struzzieri of Todi, at the suggestion of St. Paul of the Cross (d. 1775), and, together with the other six offices by which the mysteries of Christ's Passion are celebrated (see Moveable Feasts in Some Places), was approved by Pius VI. 

The hymns were composed by Fatati (Schulte, "Hymnen des röm. Brev."). Outside the Congregation of St. Paul this feast was adopted later than any of the other feasts of the Passion. It is not found in the proprium of Salerno (1793) nor in that of Livorno (1809). Other dioceses took it up only after the city of Rome had adopted it (1831). It has not yet been inserted in the Baltimore Ordo.

Collect:

O Lord Jesus Christ, who in the garden, with words and example, taught us to pray to overcome the dangers of temptations, grant us, that, always intent on prayer, we deserve to obtain copious fruit: You who are God and live and reign with God the Father in the unity of the Holy Spirit for ever and ever. Amen.