Ordinary Time is the liturgical period that does not fall within the seasons of Advent, Christmas, Lent or Easter, and runs 34 weeks. The Catholic Church celebrates two periods of the year as Ordinary Time. The first period runs from the Feast of the Baptism of the Lord until the Tuesday evening before Ash Wednesday. The Second period of Ordinary Time runs from the Monday after Pentecost until the night before Advent begins. This includes Christ the King Sunday, the final Sunday of Ordinary Time.
In Latin, Ordinary Time is called Tempus Per Annum, which means “time throughout the year”. Many sources, online and in print, suggest that Ordinary Time is derived from the word ordinal, meaning “numbered,” since the Sundays of Ordinary Time are ordered numerically.
With the vestments, usually green, the color of hope and growth, the Church counts the thirty-four Sundays of Ordinary Time, inviting all of us to meditate upon the whole mystery of Christ – his life, miracles and teachings – in the light of his Resurrection. During Ordinary Time the faithful must descend the peaks of Easter and Christmas in order to mature in the spiritual life and increase in faith.