According to the folk calendar - Plato and Roman Winter indicators

In the popular calendar, December 1 (November 18, old style) is considered the day of honoring the memory of the martyrs Roman of Caesarea and Plato of Ancyra, who died in the 4th century for the faith of Jesus Christ. Plato's life began in Ankyria in what is now Turkey. Raised by a Christian family, he began to preach his faith to the pagans, convincing them of the infidelity of idolatry. This was the reason for his arrest by the ruler Agrippin. They tried to force Plato to change his faith using flattery, bribery, and then threats and torture. After two weeks of imprisonment without food, Agrippin gave the martyr a chance to live, offering to verbally praise the pagan gods. But Plato refused, for which he was publicly beheaded. Around the same years, but already on the territory of Palestine, Deacon Roman lived in Caesarea, preaching Christianity. By order of Emperor Maximilian, persecution of pagan infidels took place, which forced Roman to move to Antioch. But he continued to persuade the population to choose the Christian faith. On the day of celebrating another pagan holiday, the deacon was captured and tortured. Then Romanus informed the ruler Asklipiades that even the youth Varulus was wiser than him, since he believed in the Lord Almighty. The young man boldly confirmed his Christian faith. For this, his head was cut off, and Roman was hanged. Plato and Romanus are called Winter Indicators, since the first day of December determines the nature of the coming winter. The people noticed that whatever the weather was like on a given day, it would be like that all winter. And if on December 1 there is a strong drop in temperature and a blizzard, then the winter promises to be cold. A calm, warm day symbolizes a mild winter. In addition, people noted that morning shows the beginning of winter, day - its middle, and evening - its end. They were used to determine the weather in the following months. Some signs replaced the weather forecast. So, if the owner found a flying mosquito in the house, then they expected warming. A raven passing along the road preceded a thaw in the coming days. And the month appeared in the sky with a bright halo before severe frosts. The sharp wind on December 1 foreshadowed frequent snowstorms throughout the winter. On the Day of Winter Signs, people prayed to Saints Roman and Plato with a request to survive the difficult winter period normally and help improve their material wealth.