'On this Day' is a prayerful and meditative work, consisting of daily reflections and prayers on Scriptural passages used in seasons of Advent, Christmas, Lent, and Easter. Its content, as spiritual food, comes out of the enlightening Scriptural words, proclaimed by the Church during everyday Masses. We are pilgrims in this world walking, marching, jogging, or running to reach our ultimate life's destiny for which God has designed and created us. Every day is so important because, as the Bible points out, today is the only Day God has entrusted to us to prepare for our meeting Him. It is the only Day every human has in hand to please God. It is the only Day every God's child is given to reciprocate to his Father's Covenantal Love. It is the author's earnest desire that 'On this Day' may assist his readers in their spiritual and religious exercises through which they gain sufficient heavenly energy to make each day pleasing to the Lord and to magnify His Glory.