my @valid_dates =
  #timegm( $sec, $min, $hour, $mday, $mon, $year ) 
  ([timegm (0,0,16,4,10,  2014), timegm (0,0,22,5,10,2014)], #2014 
   [timegm (0,0,16,5,10,  2013), timegm (0,0,22,6,10,2013)], #2013
   [timegm (0,0,16,6,10,  2012), timegm (0,0,22,7,10,2012)],)#2012
;