The Liturgical Year is also called the Church year or the Christian calendar. The Church year consists of six liturgical seasons: Advent, Christmas, Ordinary Time after Epiphany, Lent, Easter, and Ordinary Time after Pentecost. Within the standard calendar year, the Church year starts in early December and goes through the following November. Each liturgical season has its own duration, purpose, focus, and liturgical color.
The focus of Advent is the preparation and awaiting of the coming of the Lord. Advent is held the first Sunday of Advent trough December 24th. The liturgical colors of Advent are Purple and Rose.
Christmastide is the celebration of Christ's Incarnation. Incarnation is the embodiment of God the Son in human flesh as Jesus Christ, also known as the lifetime of existence of Jesus Christ. Christmas is held December 25th through The Feast of the Baptism of the Lord. The liturgical color of Christmas is white.
Ordinary Time After Epiphany is spiritually a continuation of Christmas's devotion to the Divine Childhood. The duration of this season is Monday after the Feast of the Baptism through Shrove Tuesday, which is the day before Ash Wednesday. The liturgical color of Ordinary Time is green.
Lent is a penitential season and consists of 40 days. Lent is 40 days long because it represents the 40 days that Jesus spent in the desert. Lent starts on Ash Wednesday and continues all the way through Holy Saturday. The liturgical color of Lent is purple.
Easter is the celebration of Christ's resurrection. This season has a duration of 50 days, starting on Easter Vigil Sunday and through Pentecost. The liturgical color of Easter is white.
Ordinary Time After Pentecost is the season that focuses on Christ’s reign as "King of kings", and on the age of the Church. The duration of Pentecost is, the day after Pentecost through the final day before Advent. The liturgical color is the same as Epiphany, green.