On December 5, according to the popular calendar, the memory of the martyr Procopius the Reader, who died for his Christian faith in the 4th century in Caesarea, is honored. Since ancient times, people have noticed that constant winter weather was established on Prokopyev Day. Weather signs: if the water on the river rose above the ice, warming and wet snow should be expected. The frost-free weather on Prokopyev Day foreshadowed a long, snowy winter.