In the town of Dorfen, Thursday marks a unique celebration known locally as Unsinniger Donnerstag, where residents, both young and old, don white nightgowns and traditional 'zipfelmützen' (pointed caps) or 'Schlafhauben' (sleeping caps). The celebration includes the closure of shops and the city center, which is off-limits to cars, creating a lively and festive atmosphere in the historic downtown area. This tradition sees children enjoying a day off school in a display of communal spirit and joy.

The highlight of the festivities is the Hemadlenzen parade, which is one of the oldest surviving carnival customs in the region. While the origins of this unique practice remain unclear, it is believed to have been celebrated by the residents of Dorfen since the 19th century. The event resembles similar festivities found in other Germanic regions, albeit with different names, such as 'Hemdgluncker' in Alemannic and Swabian carnival traditions. Townspeople suspect that the custom may have been brought to Dorfen by settlers.

A traditional highlight of the morning involves the community gathering for a meal, specifically a Weißwurstfrühstück (white sausage breakfast), to fortify themselves before joining the procession on Erdinger Straße, where the parade will be assembled. This vibrant and colorful celebration not only reinforces local identity and pride but also strengthens communal bonds among the residents, marking an essential part of Dorfen's cultural heritage.