Epiphany

It is beleived that the water this day is holy and can cure the illnesses and it remains fresh during the whole year. On the eve of the holiday they cut an ice-hole in the ice of the lake (here it's the lake Baikal) that have a form of the cross and everyone can take water there. Also they cut a big font and all who wants can dip into it and all the sins will be forgiven.