The document outlines the four main liturgical seasons of the church year: Advent, Lent, Easter, and Ordinary Time. Advent takes place from the last Sunday of November until December 24th and commemorates the coming of God's kingdom. Lent begins on Ash Wednesday and lasts until the week before Easter, focusing on the 40 days of fasting and abstinence in preparation for Easter. Easter celebrates Christ's victory over sin and death for 50 days after Easter Sunday. Ordinary Time occurs outside of the other seasons, from Epiphany to Lent and after Pentecost.