Roman Catholic Calendar For A.D. 2025. Our 2025 calendar is complete and intact, containing none of the changes resulting from the liturgical innovations of the 1950s and 1960s, including the 1955 holy week (which was crafted by the modernist and chief architect of. The catholic liturgical year begins with the first day of advent in every year.

Each year the secretariat of divine worship of the united states conference of catholic bishops publishes the liturgical calendar for the dioceses of the united states of america. R omcal is a software package that computes the general roman calendar of the catholic church.