use DateTime;
	my $now = DateTime->now( time_zone => 'Pacific/Honolulu' );
	my $reservation_date = DateTime->new(
		year    => $CONFIG{'date_year'},
		month   => $CONFIG{'date_month'},
		day     => $CONFIG{'date_day'},
		hour    => $myhour,
		minute  => $mymin,
		time_zone  => 'Pacific/Honolulu',
	);
	

if ($reservation_date < $now) {
print "error";
}

##</code><code>##

} elsif ($reservation_date - $now > 7) {
do something.
}