Try iterating over %date_slots and printing the customer data || 'no data'; Example:

#!perl -w

%HoH = (
        cat => {
                'FY2003-Q2' => {
                        'this is the customers data' => '1'
                        },
                'FY2003-Q4' => {
                        'this is the customers data' => '1'
                        },
                'FY2004-Q1' => {
                        'this is the customers data' => '1'
                        },
                'FY2004-Q2' => {
                        'this is the customers data' => '1'
                        },
        },
        dog => {
                'FY2003-Q2' => {
                        'this is the customers data' => '1'
                        },
                'FY2003-Q1' => {
                        'blah blah blah' => '1'
                },
        },
        catdog => {
                'FY2004-Q1' => {
                        'blah blah blah' => '1'
                },
                'FY2004-Q2' => {
                        'blah blah blah' => '1'
                }
        }
);

my %date_slots = (
        1 => 'FY2003-Q2',
        2 => 'FY2003-Q3',
        3 => 'FY2003-Q4',
        4 => 'FY2004-Q1',
        5 => 'FY2004-Q2',
);


foreach $customer (keys %HoH) {
        print "$customer\n";

        foreach $slot (sort keys %date_slots) 
        {
            $date = $date_slots{$slot};
            print "\t\t$date = ";
            ($key, $val) = each %{$HoH{$customer}{$date}};
            print $key || "no data";
            print "\n";
        }

#        foreach $date (keys %{$HoH{$customer}} ) {
#                print "\t\t$date";
#                foreach my $data (keys %{$cal{$customer}{$date}} ) {
#                        print " = $data\n";
#                }
#        }
}
__END__
# my results:
cat
                FY2003-Q2 = this is the customers data
                FY2003-Q3 = no data
                FY2003-Q4 = this is the customers data
                FY2004-Q1 = this is the customers data
                FY2004-Q2 = this is the customers data
dog
                FY2003-Q2 = this is the customers data
                FY2003-Q3 = no data
                FY2003-Q4 = no data
                FY2004-Q1 = no data
                FY2004-Q2 = no data
catdog
                FY2003-Q2 = no data
                FY2003-Q3 = no data
                FY2003-Q4 = no data
                FY2004-Q1 = blah blah blah
                FY2004-Q2 = blah blah blah
[download]

Note: I had to fix up your %HoH and %date_slots hashes because they were missing ending quotes.

--
hiseldl
What time is it? It's Camel Time!

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