Easter is at the pinnacle of the Church's celebrations and so important that we have 50 days to unpack its meaning. In fact, the season is a special time for the neophytes (those newly baptized) to reflect upon the Paschal graces they have received. This period is referred to as "mystogogy". Those already baptized join the neophytes in this reflection. Saint Paul encourages us to such reflection: "that I may know him and the power of his resurrection, and may share his sufferings, becoming like him in his death, that if possible I may attain the resurrection from the dead." (Philippians 3:10).
Easter can be called the Eighth Day. The seven days belong to the first creation. In the Resurrection, something new has happened; an event of cosmic proportions. "But for us a new day has dawned: the day of Christ's Resurrection. The seventh day completes the first creation. The eighth day begins the new creation. Thus, the work of creation culminates in the greater work of redemption. The first creation finds its meaning and its summit in the new creation in Christ, the splendour of which surpasses that of the first creation" (Catechism of the Catholic Church 349).