Since I don't see an attempt at a sort statement in that code, its hard to guess where you want the sort. To sort a list of hash references by one of the values, you would say sort { $a->{Date} cmp $b->{Date} }, adjusting the particular key used and perhaps changing cmp to <=> to suit.

(Update: was showing array refs, change to hash refs)

On another topic, where you have:

    my $i;
    for $i (0..$#items) {
    print "-------------\n";
       my %hash = %{$items[$i]};
       my $d = Dumper(\%hash);
       print "$d\n";
#      my $date = $hash{Date};
    }
[download]

I have a suggestion. Instead of looping over the indices, it is more natural in Perl to loop over the array itself:

for my $hashref (@items) {
   my $d = Dumper($hashref);
   print "$d\n";
#  my $date = $hashref->{Date};
}
[download]