if ($d2 >= $1) {

##</code><code>##

print "\n $d2 is greater or equal to  $d1\n";

##</code><code>##

DateTime->compare( $dt1, $dt2 )

##</code><code>##

use strict;
use warnings;
use feature 'say';
use DateTime;

my $d1 = DateTime->new(
    year      => 2019,
    month     => 8,
    day       => 1,
    time_zone => 'America/Chicago',
);

my $d2 = DateTime->new(
	year      => 2019,
	month     => 6,
	day       => 8,
    time_zone => 'America/Chicago',
);

##</code><code>##

say DateTime->compare( $d1, $d2 ) > 0
    ? $d1->ymd .' is greater than ' . $d2->ymd 
    : $d2->ymd .' is greater or equal to ' . $d1->ymd;