Why is this not working?

on *:join:#: {
if ($asctime(dd:mm) == 28:11) {
notice $nick TEXT
}
}

Hello.

I need some help, because this dosen't work

on *:JOIN:#chan: {
  if ($nick !isop $chan) {
    notice $nick "MESSAGE"
  }
  msg Froggaard ANOTHER MESSAGE
}

The notice message should not be sent when a op join the channel.. What you I wrong?