A series of solar and lunar eclipses occurred within a single year over the capital city of Aachen, Germany, causing immense political anxiety within the court of the aging Emperor Charlemagne. Courtiers and astrologers viewed these frequent 'stains upon the sun' as an explicit celestial message heralding the imminent death of the great monarch and the collapse of Frankish unity. Charlemagne himself reportedly took an interest in the signs, utilizing his scholars to seek rational explanations while preparing his empire for succession.

These specific eclipses were recorded by the imperial biographer Einhard in his Vita Karoli Magni. The text set a structural standard for Carolingian literature where the physical elements of nature are depicted as being in deep alignment with the mortal clock of a foundational Christian king, heavily influencing later medieval chivalric romances.