Nostradamus
The verses themselves are written without dates and in syntax built for ambiguity, a structure that allows any later event to be matched to them after the fact. What can actually be dated with precision is the printing history of the book itself and its later use as wartime propaganda by opposing sides.
Michel de Nostredame, Les Propheties (Lyon, first printed 1555, expanded 1557 and 1568)
A sixteenth-century French physician whose collection of deliberately vague, undated prophetic verses is still read as predicting modern events.
