On September 13, the Orthodox Church remembers Saint Cyprian, Bishop of Carthage.
In the folk calendar, September 13 is Kupriyan the Potato, Crane Veche, Kupriyanov Day.
According to folk signs, on Kupriyan Kartofelnik you can find out whether the winter will be harsh.
The repeated flowering of dandelion promises a warm and long autumn.
If ants have built large anthills, the winter will be harsh.
If cranes fly low, the winter will be mild.
If cranes fly not in a wedge, but individually, the next year will be a poor harvest.