There have been some "great" days in the history of the earth: the fall of Rome; discovery of how bacteria caused disease; man on the moon, et al. From a biblical perspective: creation, the incarnation of God, Jesus' death and resurrection. There is yet to come one day which is arguably greater than any of these other days because it will be the culmination of all that God has been working for from the beginning. It will be the last day of this time world, the day of judgment, the day of the return of the Lord Jesus Christ. What a day that will be!!