What day of the week was September 5, 1980?

The day of the week September 5th, 1980 fell on was a Friday.

Franco Costanzo the Argentinian footballer was born on 05 September in 1980.

The St. Gotthard Tunnel opens in Switzerland as the world's longest highway tunnel at 10.14 miles (16.224 km) stretching from Göschenen to Airolo.