As far as I know, you just use
Value. What exactly does it output for date cells? When I just ran the above sample code on a linux box, I got a formatted date output where there is a date in the original data (an Excel 2000-formatted spreadsheet).
___
-DA
$_='daniel@coder.com 519-575-3733 /Prescient Code Solutions/ coder.c
+om
';s/-/ /g;s/([.@])/ $1/g;@y=(42*1476312054+7*3,14120504e4,-42*330261-3
+3,
42*5436+3,42*2886+10,42*434987+5);s/(.)/ord(uc($1))/ge;for(@x=split/32
+/;
@y; map{print chr} split /(..)/, shift(@x) + shift(@y)) {perlmonk.da.r
+u}