Mine

ON *:TEXT:!settimer:#: {
  if ($nick isvoice $chan) || ($nick ishop $chan) || ($nick isop $chan) { notice $nick you have set your start time as $time | set %timer $+ $nick $ctime | halt }
else {notice $nick you need to be voiced or above to use this command | halt }
}


ON *:TEXT:!timer:#: {
if (%timer [ $+ [ $nick ] ]) { notice $nick $duration($calc($ctime - %timer [ $+ [ $nick] ])) have passed }
ELSE { /notice $nick You havent Set your timer! | HALT }
}
}