Reformationstag — is a holiday celebrated in honor of the founding of the Evangelical Church.
At the heart of the Reformation was the desire of the progressive part of the church to return to the purity of the Word of God from the superficial human acquired by the church in the Middle Ages.
As the story goes, on this day in 1517, the German reformer Martin Luther nailed his famous «95 theses» to the doors of the parish church of the city of Wittenberg, thereby marking the beginning of a broad discussion about the effectiveness of indulgences, which in turn became the beginning of the Reformation in Western Christianity.
This event led to the opening of the Bible to the general public, a rethinking of Christian doctrine, and the emergence of Protestantism, a split of the church into evangelical and Catholic branches.
Now in the world there are several directions in Lutheranism — there are conservative Lutherans, there are liberal ones, but on this day they often unite together to hold joint services.
This day can be called the official beginning of Protestantism. In some Lutheran churches in Germany, October 31 is called Luther's Theses Day.
Reformation Sunday is celebrated on the Sunday preceding October 31st.