Fait général: 1967 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 1967 is an unremarkable number.
Culture générale: 1967 is a boring number.
Date historique: May 20th is the day in 1983 that First publications of the discovery of the HIV virus that causes AIDS in the journal Science by Luc Montagnier.