Advent, the beginning of the liturgical year in the Catholic Church, is a time of preparation for the coming of Christ at Christmas. It was historically known as "little Lent," because, like Lent, it is a time of repentance, with prayer, fasting, and Confession.
Advent begins four Sundays before Christmas, and therefore varies in length between 22 days and 28 days. (In 2013, it is 24 days long.) The following is a list of the dates of the Sundays and major feast days that fall in Advent 2013:
First Sunday of Advent (Sunday, November 22, 2016)
Second Sunday of Advent (Sunday, December 4, 2016)