A day to remember that even Europeans were evangelized by missionaries. So honor, pray for, and give money to missionaries today.
Also, salute the Irish for saving civilization by preserving books, keeping learning alive, and converting the barbarians. Thus bringing the Dark Ages to an end and ushering in the Middle Ages. (Note: Do NOT confuse the Dark Ages with the Middle Ages. The Middle Ages were the end of the Dark Ages, which began with the Fall of Rome.)
Some say that we have entered a new Dark Age, another time of social breakdown with a new kind of barbarism. If that is so, how can we do today what St. Patrick and the Irish did back then, namely, save civilization?