What day of the week was October 26, 1917?

The day of the week October 26th, 1917 fell on was a Friday.

World War I: Battle of Caporetto; Italy suffers a catastrophic defeat at the forces of Austria-Hungary and Germany. The young unknown Oberleutnant Erwin Rommel captures Mount Matajur with only 100 Germans against a force of over 7000 Italians. World War I: Brazil declares war on the Central Powers.