Fatto generale: 88 is the number of keys on a piano (36 black and 52 white).
Fatto matematico: 88 is one of only 2 numbers known whose square has no isolated digits.
Trivia: 88 is the approximate number of days it takes Mercury to complete its orbit.
Data storica: March 28th is the day in 1969 that Greek poet and Nobel Prize laureate Giorgos Seferis makes a famous statement on the BBC World Service opposing the junta in Greece.