What day of the week was May 10, 1940?

The day of the week May 10th, 1940 fell on was a Friday.

World War II: German fighters accidentally bomb the German city of Freiburg. World War II: German raids on British shipping convoys and military airfields begin. World War II: Germany invades Belgium the the Netherlands and Luxembourg. World War II: Winston Churchill is appointed Prime Minister of the United Kingdom following the resignation of Neville Chamberlain. World War II: Invasion of Iceland by the United Kingdom.