Fifteen Signs before Doomsday
The Fifteen Signs before Doomsday (alternatively known as the Fifteen Signs of Doomsday, Fifteen Signs before Judgement, in Latin Quindecim Signa ante Judicium, and in German 15 Vorzeichen des Jüngsten Gerichts) is a list, popular in the Middle Ages because of millenarianism, of the events that are supposed to occur in the fortnight before the end of the world. It may find an origin in the apocryphal Apocalypse of Thomas and is found in many post-millennial manuscripts in Latin and in the vernacular.
Source: Wikipedia — Fifteen Signs before Doomsday (CC BY-SA 4.0)