SECOND PART OF THE LITURGICAL YEAR: THE EASTER CYCLE (MYSTERY OF THE REDEMPTION).[i]
III. SEASON AFTER PENTECOST
"This season begins with the Feast of the Blessed Trinity and is the longest of the Liturgical Year. It may comprise from twenty-four to twenty-eight weeks and differs considerably from the other liturgical seasons.
In the Liturgical Year there is a historical progression, beginning in Advent with the waiting for the coming of the Messias, followed by His birth at Christmas. During the Sundays after Epiphany, the Holy Childhood is commemorated, while during Lent we are reminded of the fasting in the desert and the Passion of Our Lord. The sacred cycle is completed at Eastertide, when we celebrate the Resurrection and Ascension of Our Lord and the Descent of the Holy Ghost upon the Apostles.
In this last part of the ecclesiastical year, the Church, guided by the Holy Ghost, continues the work of the Redemption, realised during the preceding part of the Liturgical year.
'The Holy Ghost, whom the Father will send in My Name, He will teach you all things, and bring all things to your mind whatsoever I have said to you.'
This last season of the Liturgical Year is filled with feats of major importance: those of the Blessed trinity, Corpus Christi, the Sacred Heart, the Assumption and Nativity of Our Lady, All Saints and All Souls."
[i] Remarks are abstracted from The Daily Missal and Liturgical Manual, from Editio Typica of the Roman Missal and Breviary, 1962
(Baronius Press Limited, London, 2004, in conjunction with the Fraternal Society of St. Peter, www.baroniuspress.com)