Fatto generale: 180 is the number of litres of saliva in one day that cattle can produce.
Fatto matematico: 180 is the total number of degrees in a triangle.
Trivia: 180 is the number of films American film actor John Wayne starred in.
Data storica: June 28th is the day in 1948 that the Cominform circulates the "Resolution on the situation in the Communist Party of Yugoslavia"; Yugoslavia is expelled from the Communist bloc.