What day of the week was September 17, 1916?

The day of the week September 17th, 1916 fell on was a Sunday.

Mary Stewart the English-Scottish author (d. 2014) was born on 17 September in 1916.

World War I: Manfred von Richthofen ("The Red Baron") the a flying ace of the German Luftstreitkräfte, wins his first aerial combat near Cambrai, France.