Perl : not capturing all the data from excel sheet

Hi folks,

I am working on assignment that captures all the records(2 columns one column contains names and other contain date of birth) from excel sheet stored in a directory and checks for current date and month.
If it matches current date and month then the matched records are printed as "Today is Giridhar's birthday".

PSB code.

#!perl -w
   use strict; 
    use DateTime;
    use warnings;
    use Spreadsheet::ParseExcel;
    use Time::localtime;
    my $path = "C:\\pro1\\dates.xls";
    my $parser   = Spreadsheet::ParseExcel->new();
    my $workbook = $parser->parse($path);
    my @list;
    my %bdays;
    my %key;
    my $key;
    my $value;
    my @ndate;
     
## for capturing today's date and month for comparision
my $dt = DateTime->now;
# $dt variable is initializes with the current date
my $cday = $dt->day;
my $cyear = $dt->year;
my $cmonth = $dt->month_abbr;

    if ( !defined $workbook ) 
    {
        die $parser->error(), ".\n";
    }
    
    for my $worksheet ( $workbook->worksheets() ) 
    {
        my ( $row_min, $row_max ) = $worksheet->row_range();
        my ( $col_min, $col_max ) = $worksheet->col_range();
        for my $row ( $row_min .. $row_max ) 
        {
            for my $col ( $col_min .. $col_max ) 
            {
                my $cell = $worksheet->get_cell( $row, $col );
                next unless $cell;               
                push(@list,$cell->value());               
                print "\n";
            }
        }
    }

%bdays = @list;
while ( ($key,$value) = each %bdays )
{
    @ndate=split(/-/,$value);  
   if ( $ndate[0] == $cday && $cmonth eq $ndate[1] )
   {
      print "Today is "." $key"."'s"." Birthday","\n";
   }    
}

 #### Now finally we are emptying the hash
  %bdays = ();

Input(excel sheet data)

Giridhar1-Aug-91ram29-Aug-90siva1-Aug-89suman8-Aug-91venkat29-Aug-88sai19-Aug-86rama29-Aug-80siva19-Aug-86Krishna1-Aug-91Mohan1-Aug-90

Output

Use of uninitialized value in numeric eq (==) at excel_data_final.pl line 62.
Today is Mohan's Birthday
Today is Giridhar's Birthday
Today is Krishna's Birthday
Press any key to continue . . .

Here, Siva's date is not considered.. Not sure why this happened.
Also I require duplicate records(same names and DoB's) but it is not capturing and also the error message
"Use of uninitialized value in numeric eq (==) at excel_data_final.pl line 62"

Could you please let me know where I made the mistake ?

any help on this will be much appreciated..

Thanks in advance...

Regards,
Giridhar S