Congregation for Divine Worship
Table I - Principal Celebrations of the Liturgical Year
Feasts in the Easter Cycle (Ash Wednesday through Corpus Christi), the dates on which they occur (from 1998 through 2025), and which of alternative readings is determined by the year.
Table I (cont.) - The number of weeks in Ordinary Time before Lent and after Lent, and the date of the First Sunday of Advent, according to the year.
Table II - Order of the Second Reading for Sundays in Ordinary Time
From the second to the thirty-third Sunday in Ordinary Time, the Epistle from which the second reading is drawn, according to the year (A, B, or C) in the three-year Sunday lectionary.