Şöyle bir kod lazım. Bi bakarmısınız

<script type="text/javascript">
function time() {
  var amonth = 9 // ay
  var aday = 11 // gün
  var ayear = 2001 //yıl

  var x = new Date()
  var dyear
  var dmonth
  var dday
  var tyear = x.getFullYear()
  var tmonth = x.getMonth()+1
  var tday = x.getDate()
  var y=1
  var mm=1 
  var d=1 
  var a2=0 
  var a1=0
  var f=28

  if ((tyear/4)-parseInt(tyear/4)==0) {
    f=29
  }

  m = new Array(31, f, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31)

  dyear = tyear-(ayear)

  dmonth = tmonth-amonth
  if (dmonth<0) {
    dmonth = dmonth+12
    dyear--
  }

  dday = tday-aday
  if (dday<0) {
    var ma = amonth+tmonth
    if (ma>12) {ma = ma-12}
    if (ma=0) {ma = ma+12}
    dday = dday+m[ma]
    dmonth--
  }

  if (dyear==0) {y=0}
  if (dmonth==0) {mm=0}
  if (dday==0) {d=0}
  if ((y==1) && (mm==1)) {a1=1}
  if ((y==1) && (d==1)) {a1=1}
  if ((mm==1) && (d==1)) {a2=1}
  if (y==1){
  document.write(+dyear+" yıl") }
    if ((a1==1) && (a2==0)) {document.write(" ve ")}
    if ((a1==1) && (a2==1)) {document.write(", ")}
    if (mm==1){
    document.write(dmonth+" ay")
  }
  if (a2==1) {document.write(" ve ")}
  if (d==1){
    document.write(+dday+" gün")
  }
}
</script>

<script type="text/javascript">time()</script>