golang diff from today
func getLastDays(diff int) []string {
now := time.Now()
getDay := func(t time.Time, dif int) string {
return t.AddDate(0, 0, dif).Format("01/02")
}
var res []string
for i := 1; i <= diff; i++ {
res = append(res, getDay(now, i-diff))
}
return res
}