Try use this code:

Code:
alias todate {
  var %month = 11
  var %day = 30
  var %year = 2015
  var %todate = $calc($ctime($+(%day,-,%month,-,%year) 14:00:00) - $ctime)
  if (%todate < 0) {
    inc %year
    %todate = $calc($ctime($+(%day,-,%month,-,%year) 14:00:00) - $ctime)
  }
  return %todate
}

alias -l fixdate {
  if (!$1-) { return }
  var %t = $replace($1-,hrs,h,hr,h,mins,m,min,m,secs,s,sec,s)
  if (*m* iswm %t) { 
    var %min = $gettok($gettok(%t,1,109),$numtok($gettok(%t,1,109),32),32)
    var %fm = %min $+ m
    var %fm2 = 0 $+ %fm
    if ($len(%fm2) == 3) {
      var %rep = $replace(%t,%fm,%fm2)
      var %t = $replace(%t,%t,%rep)
    }
  }
  if (*s* iswm %t) {
    var %s = $gettok(%t,$numtok(%t,32),32)
    var %t = $puttok(%t,and,$numtok(%t,32),32) %s
  }
  if (*h* iswm %t) { var %t = $replace(%t,h,h $+ $chr(44)) }
  if (%t) { return %t }
  elseif (!%t) { return 0 }
}

ON *:TEXT:*stream*:#yznb: {
  tokenize 32 $strip($1-)
  if ((%floodtest) || ($($+(%,floodtest.,$nick),2))) || (!$2) || (!$3) { return }
  set -u30 %floodtest On
  set -u60 %floodtest. $+ $nick On
  var %d = $duration($todate($2,$3))
  if (%d) { var %dur = $fixdate(%d) }
  if (%dur) { msg $chan @ $+ $nick Next stream starts in about  $+ %dur $+  }
}

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