Following the U.S. presidential election, many began to talk of the Nostradamus predictions and their validity in the wake of Donald Trump's win. A look at predictions of the past as we enter Nostradamus wrote his first set of Quatrains, four line predictions, in and books are. Nostradamus completed a total of quatrains which he organized into Centuries - groups of quatrains (one Century only had 42 quatrains). A quatrain is. He says it will end as a result of an unexpected alliance. This mathematician calculated the end of the world would be this year based on calculations from the Book of Revelation. Following the failure of the January 1, prediction, some theorists proposed that the end would occur years after Jesus' death, instead of his birth. Check Nostradamus Prophecies — Is the End of the World Coming? The people of France did convict King Louis and sentenced him to death.