Fatto generale: 1977 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 1977 is an uninteresting number.
Trivia: 1977 is an unremarkable number.
Data storica: May 30th is the day in 1842 that John Francis attempts to murder Queen Victoria as she drives down Constitution Hill, London with Prince Albert.