post dates

$date_query = array(
	'relation' => 'OR',
	array(
		'week'          => 1,
		'compare'       => '>',
		'column'        => 'post_date',
	),
	array(
		'week'          => 1,
		'compare'       => '>',
		'column'        => 'post_modified',
	),
);