Reformation Day is observed on 31 October each year, marking the day in 1517 when Martin Luther is said to have nailed his 95 Theses to the church door in Wittenberg. This act sparked the Protestant Reformation and had a profound impact on religion, culture, and history in Germany and beyond. In parts of Germany, Reformation Day is a public holiday, with church services, concerts, and community events commemorating Luther’s call for renewal in the Christian faith.
Reformationstag (31 October) is an official public holiday in these Bundesländer:
- Brandenburg
- Mecklenburg-Vorpommern
- Sachsen (Saxony)
- Sachsen-Anhalt
- Thüringen (Thuringia)
- Niedersachsen (Lower Saxony)
- Bremen
- Hamburg
- Schleswig-Holstein

