use Time::Local qw/timelocal_nocheck/;
print scalar( localtime( timelocal_nocheck( 0,0,0,1,0,5 )) ), "\n";
print scalar( localtime( timelocal_nocheck( 0,0,0,1,12,5 )) );
__OUTPUT__
Sat Jan  1 00:00:00 2005
Sat Jan  1 00:00:00 2005