In Ordinary Time no particular aspect of the mystery of Christ is celebrated, but rather the mystery of Christ itself is honoured in its fullness, especially on Sundays. “On the first day of each week, which is known as the Day of the Lord or the Lord’s Day, the Church, by an apostolic tradition that draws its origin from the very day of the Resurrection of Christ, celebrates the Paschal Mystery. Hence Sunday must be considered the primordial feast day.” (Missal p.130) Ordinary Time begins (the Monday occurring after 6th January) and extends up to and including the Tuesday before the beginning of Lent; it begins again on the Monday after Pentecost Sunday and ends before first Vespers of the First Sunday of Advent.