Rupert's Day
The Rupertstag is the 27. March .
Rupert's Day is dedicated to St. Rupert , who was Bishop of Worms from the middle of the 7th century until 717 .
The weather rule is: "If the sky is clear on Rupert's Day, it will also be in June". In addition, the fruit growers shake the trees on this day to remove caterpillars.
Web link
Rupertstag on the website of the Federation of German Catholic Youth in Bavaria, accessed on December 25, 2012