May 9 is Europe Day for various reasons. First it is the anniversary of Schuman Declaration of 1950 which placed French and German production of coal and steel under one common High Authority open to all western European countries.
This organization paved the way for the European Economic Community and later the European Union.
May 9 is also celebrated throughout Europe as Victory Day commemorating the surrender of the Nazis in 1945.
These posts are true to the best of my knowledge at the time of writing. I make no claims to their accuracy. The purpose is to inform, educate, amuse, and make people aware of causes and opportunities around the world. I also encourage civil debate in the comment section.