Passage: In 1900 he had a resounding success with his “officer’s tragedy” Rosenmontag (Carnival Monday) which deals with an ill-fated affair between a simple girl and a young officer from an old military family.  He used the proceeds to purchase the Villa Halkyone in Salò on Lake Garda.  Here he founded in 1903 the Halkyone Academy for the Pure Sciences, which included among its members Peter Behrens, Otto Julius Bierbaum, Franz Blei, Gerhart Hauptmann, Alfred Kubin, Emil Orlik and Ferdinand Pfohl, and which boasted just two rules: "§ 1. Membership of the Halkyone Academy confers neither duties nor rights.  § 2. Everything else is governed by the spirit of the Halkyone community."

Question: What year did officer's tragedy Rosenmontag happened?
1900