Date_time_start

$meta_query_start = array(
	'relation' => 'AND',
	array(
		'key'     => 'harmonogram_naboru_ogloszenie_wynikow',
		'value'   => '$now->format('Y-m-d')',
		'compare' => '=',
		'type'    => 'DATE',
	),
	array(
		'key'     => 'harmonogram_naboru_ogloszenie_wynikow_-_godzina',
		'value'   => '$now->format('H:i:s')',
		'compare' => '>',
		'type'    => 'TIME',
	),
);