On September 5, the Orthodox Church remembers the holy martyr Luppus of Thessaloniki.
In the folk calendar, September 5 is Lup Brusnichnik, Lupensky frosts, Lupov day.
According to folk signs, on Lup's Day you can find out what autumn and winter will be like.
A thunderstorm on this day promises a warm autumn and a cold winter.
If the weather is warm on Lupa Brusnichnika, the whole month will be warm.
If the cranes head south, winter will come early.
Repeated flowering of trees foretells a long winter.