Post date

$date_query = array(
	'relation' => 'AND',
	array(
		'year'          => 4 digits,
		'month'         => 1-12,
		'day'           => 1-31,
		'week'          => 0-53,
		'dayofweek'     => 0-7 (1 is Sunday),
		'dayofweek_iso' => 0-7 (1 is Monday),
		'hour'          => 0-23,
		'minute'        => 0-59,
		'second'        => 0-59,
		'compare'       => '=',
		'column'        => 'post_date_gmt',
	),
);