The spate of the descriptions of omens in medieval literature, including chronicles, seems to be poorly researched. The purpose of this article is to trace the omens that were looked for in medieval times, how people reacted to them, and how these are recorded in the Ukrainian chronicles. Fragments of the Chronicle of Novgorod describing various celestial omens are analysed here. This may fill a gap in historical research since the omens recorded in these chronicles have not been adequately researched so far.