date
$meta_query = array( 'relation' => 'AND', array( 'key' => 'termine', 'value' => '4', ), array( 'key' => 'termine_4_datum', 'value' => 'date('Ymd',$date)', 'compare' => '<=', ), );
$meta_query = array( 'relation' => 'AND', array( 'key' => 'termine', 'value' => '4', ), array( 'key' => 'termine_4_datum', 'value' => 'date('Ymd',$date)', 'compare' => '<=', ), );