Hecho general: 60 is a common speed limit (mph) for freeways in many US states.
Hecho matemático: 60 is the sum of a pair of twin primes (29 + 31), as well as the sum of four consecutive primes (11 + 13 + 17 + 19).
Trivia: 60 is a common speed limit (mph) for freeways in many US states.
Fecha histórica: February 29th is the day in 1956 that U.S. President Dwight D. Eisenhower announces to the nation that he is running for a second term.