Hecho general: 480 is the number of hours for rocking non-stop in a rocking chair, a world record held by Dennis Easterling of Atlanta.
Hecho matemático: 480 is the smallest number which can be written as the difference of 2 squares in 8 ways.
Trivia: 480 is the number of hours for rocking non-stop in a rocking chair, a world record held by Dennis Easterling of Atlanta.
Fecha histórica: April 24th is the day in 1918 that First tank-to-tank combat, at Villers-Bretonneux, France, when three British Mark IVs met three German A7Vs.