// +build ignore,OMIT package main import ( "fmt" "time" ) func main() { days := []string{"2015 Feb 29", "2016 Feb 29", "2017 Feb 29"} fmt.Println("Are these days valid?") for _, day := range days { _, err := time.Parse("2006 Jan 2", day) fmt.Printf("%v -> %v\n", day, err == nil) } }