On September 20, the Orthodox Church remembers the Venerable Luke of Glubokorechensk and the Holy Martyr Sozont of Pompeoli.
In the folk calendar, September 20 is Luka and Sozont, Lukov Day, Lukovnitsa.
According to folk signs, on Lukov Day you can find out whether the winter will be frosty.
A cloudless sky on this day foretells a frosty and windy winter.
If the cones on the spruce trees grow low, winter will come early.
Frosts on Lukov Day are a harbinger of a snowy winter.
There will also be a lot of snow in winter if you can't hear birds singing in the morning on Luka and Sozonta.