You had your cartilage pierced for a year and 3 months will it close if you take it out for a day?

Depends on how old the piercing is. If it's less than at least six months then yes, it will close in a few hours, if it's over a year and a half old it's safe to remove for a while and if it's several years old you could probably leave it out for weeks at a time, but remember that everyone's body is different and thus it could close in a couple hours at four years old, or it could stay open for weeks with nothing in it at a year.