tribe dates

$meta_query = array(
	'relation' => 'AND',
	array(
		'key'     => 'start_date',
		'value'   => '2017-06-01',
		'compare' => '>=',
		'type'    => 'DATETIME',
	),
	array(
		'key'     => 'end_date',
		'value'   => '20017-06-15',
		'compare' => '<=',
		'type'    => 'DATETIME',
	),
);