Fatto matematico: 6621 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 6621 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: February 15th is the day in 1965 that a new red-and-white maple leaf design is adopted as the flag of Canada, replacing the old Canadian Red Ensign banner.