Combined South Slavonic Brontologion from the Late Middle Ages: Sources, Contents and Characteristics.

The article focuses on the study of five South Slavic medieval manuscripts of the Brontologion, a combined prognostic divination book from the Late Middle Ages (16th–18th centuries). These manuscripts, originating from Bulgarian, Serbian, Moldovan, and Bosnian contexts, contain detailed descriptions of astronomical and meteorological phenomena such as eclipses, comets, thunder, and unusual weather events, alongside socio-political predictions including the fate of rulers and wars. The research highlights the evolution of the Brontologion's social function, initially confined to royal and boyar courts but later disseminated among broader social strata via the lower clergy, accompanied by changes in language, structure, and content reflecting everyday life concerns. The article also discusses typologies of Brontologion texts, their sources, and the integration of various prognostic traditions, emphasizing their polyfunctional role in medieval South Slavic culture as both literary and calendrical reference works.