General fact: 1963 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Mathematical fact: 1963 is 7852 / 4, and this equation uses each digit 1-9 exactly once.
Trivia: 1963 is an uninteresting number.
Historical date: May 16th is the day in 1960 that Theodore Maiman operates the first optical laser, at Hughes Research Laboratories in Malibu, California.