Every year on 24 june is Еньовден- old slavic pagan holiday. This holiday has Its roots in Russia and Ukraine, the peoples believe that in the morning of this day the herbs are more powerfull. This day is connected to the Sun's cult. The tradition points the far begining of the winter season :
Еньо си наметнал кожуха да върви за сняг
Smile to the Father - the Sun and he will give you health along the whole year!

sorry for the bad english, I don't have time