St. Martin's Day
Yup... the yearly "trick 'r treat" terror... The Dutch November 11th custom, to go from door to door, in an effort for instant tooth decay. I'm not even sure if the "Sint Maarten" celebration is a custom in all parts of The Netherlands.
As soon it gets dark, children up to the age of 11 (of so) go from door to door with paper lanterns, singing songs and hoping for candy or fruit in return. They say that poor people would visit farms on November 11th (the day Saint Martin died) to get extra food for the winter, in the past. Whether that's true or not, I don't know...
Of course the story of "St. Martin of Tours" is known... He started out as a Roman soldier, was baptized as an adult and became a monk. It is understood that he was a kind man who led a quiet and simple life. The most famous legend of his life is that he once cut his cloak in half to share with a beggar during a snowstorm, to save the beggar from dying of the cold. That night he dreamed that Jesus was wearing the half-cloak Martin had given away. Martin heard Jesus say to the angels: "Here is Martin, the Roman soldier who is not baptised; he has clothed me."