$day1 = $INPUT{antag}; 
$month1 = $INPUT{anmonat}; 
$year1 = $INPUT{anjahr}; 
 
$day2 = $INPUT{abtag}; 
$month2 = $INPUT{abmonat}; 
$year2 = $INPUT{abjahr}; 
 
($year,$month,$day) = System_Clock();