Fait mathématique: 1215 is the smallest number n where n and n+1 are both products of 6 or more primes.
Culture générale: 1215 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Date historique: April 29th is the day in 1986 that a fire at the Central library of the City of Los Angeles Public Library damages or destroys 400,000 books and other items.