today’s date

$meta_query = array(
	'relation' => 'AND',
	array(
		'key'     => 'private',
		'value'   => 'intval($private)',
		'compare' => '=',
	),
	array(
		'key'     => 'date',
		'value'   => '20190708',
		'compare' => '=',
	),
);