In quatrain 5.78, Nostradamus wrote:
“In the year 2023, the great king of terror will come from the sky. He will bring with him a great famine and plague, causing the death of many. His reign will be short, but the destruction he causes will be long-lasting.”
In quatrain 8.23, Nostradamus wrote:
“In 2023, a great leader will rise up in the East, uniting the nations under his banner. His rule will be just and fair, and he will be loved by all. He will bring peace to the world, and his reign will be long and prosperous.”
Lettres trouvees de la roine les coffres, Point de subscrit sans aucun nom d'hauteur Par la police seront cach les offres. Qu'on ne scaura qui sera l'amateur. Letters are found in the queen's chests, no signature and no name of the author. The ruse will conceal the offers; so that they do not know who the lover is.
Les deux vnis ne tiendront longuement, Et dans treize ans au Barbare Strappe, Aux deux costez feront tel perdement, Qu'vn benira le Barque & sa cappe. The two will not be united for very long, And in thirteen years to the Barbarian Satrap: On both sides they will cause such loss That one will bless the Bark and its cope.
http://www.spiritual-knowledge.net/human/nostradamus-quatrains-5.php
Except Nostradamus didn’t write those. He didn’t assign years to his quatrains, so those are obvious fakes.
Do they specifically say “2023”? If so, that’s far more specific than any other prophecy I’ve ever read of his.