This is the time during which the very first novena of the Church Age was made, when Mary and the Apostles prayed from Christ's Ascension to the Pentecost, a period of nine days (Acts 1-2).
First Day:
Almighty and eternal God, Who hast vouchsafed to regenerate us by water and the Holy Ghost, and hast given us forgiveness of all our sins, vouchsafe to send forth from heaven upon us Thy sevenfold Spirit, the Spirit of Wisdom and Understanding, the Spirit of Counsel and Fortitude, the Spirit of Knowledge and Piety, and fill us with the Spirit of Holy Fear. Amen.
Recite one Our Father, one Hail Mary, and seven Glory Be's