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).
Third Day:
Come, O Blessed Spirit of Piety, possess my heart. Enkindle therein such a love for God, that I may find satisfaction only in His service, and for His sake lovingly submit to all legitimate authority. Amen.
Recite one Our Father, one Hail Mary, and seven Glory Be's