On September 1 - a holiday of an icon of the Mother of God "Don".
This day in 2010 became also an official holiday of the Cossacks. Such decision was made then by the Most Saint Patriarch of Moscow and all Russia Kirill.
"I declare Day of the Don icon of the Mother of God, on September 1 on new style, a holiday of the orthodox Cossacks", - the patriarch after a liturgy and a prayer before a wonder-working Don icon of the Mother of God in the Moscow Donskoy Monastery that day told. In reply sounded amicable Cossack "Ljubo!".