'lang' => ''
<?php
$args = array(
'post_type' => 'page',
'posts_per_page' => -1,
'post_parent' => $post->ID,
'order' => 'ASC',
'orderby' => 'menu_order',
'lang' => ''
);
$parent = new WP_Query( $args );
if ( $parent->have_posts() ) : ?>
<?php while ( $parent->have_posts() ) : $parent->the_post(); ?>
<?php the_title(); ?>
<?php endwhile; ?>
<?php endif; wp_reset_query(); ?>
var supervise = {};
$('.date').each(function() { //Где '.date' - блок содержащий дату поста
var txt = $(this).text();
if (supervise[txt])
$(this).remove();
else
supervise[txt] = true;
});