The liturgical books of the Roman Rite are the official books containing the words to be recited and the actions to be performed in the celebration of Catholic liturgy as done in Rome.The Roman Rite of the Latin or Western Church of the Catholic Church is the most widely celebrated of the scores of Catholic liturgical rites.The titles of some of these books contain the adjective …

The Ranking of liturgical days in the Roman Rite is a regulation for the liturgy of the Roman Catholic church. It determines for each liturgical day which observance has priority when liturgical dates and times coincide (or "occur"), which texts are used for the celebration of the Holy Mass and the Liturgy of the hours and which liturgical ...