Assumption Day, also known as the Feast of the Assumption of the Blessed Virgin Mary, is a popular holiday in many countries across the world, including Germany. In Germany, it is locally known as 'Maria Himmelfahrt.' The holiday, celebrated annually on August 15th, honors the belief rooted in Christianity of the Virgin Mary's bodily uplift to heaven after her death.

In Germany, the celebration of Assumption Day is most observed in the southeastern state of Bavaria (BY). This is largely due to Bavaria's strong Catholic population. Here, the day is marked with a series of events including public processions, special church services, music concerts, and often includes various traditional customs. Because of its deep historical and cultural roots, it is considered a public holiday in this region.

On the contrary, in the rest of the country's states, Assumption Day is not typically a public holiday. This is attributable to the difference in religious demographics across the country. However, even in the areas where it's not a public holiday, many individuals who follow the Catholic faith privately observe the day by attending special church services. Regardless of this difference, Assumption Day remains an integral part of the country's religious landscape.