This work also contains the Office of Compline, the night prayer of the Catholic Church and Benediction. Pope Saint Pius X ordered pastors to teach the faithful Catechism after the Office of Vespers on Sundays. Until the last century, the Lord's Day (Sunday) was observed far more piously than it is today. Many assisted at a low Mass, then returned later for High Mass. After dinner they would return in the late afternoon for the singing of the Office of Vespers. Indeed, Saint Pius X desired this custom to continue in his time and it is desirable today. This work contains the Latin and English for the Vespers of Sundays and all of the feasts of the year.