function display_last_updated_date() {
	$u_time = get_the_time('U');
	$u_modified_time = get_the_modified_time('U');

	if ($u_modified_time >= $u_time + 86400) {
		$updated_date = get_the_modified_time('F jS, Y');
		echo '<div class="last-updated">This post was last updated on ' , $updated_date , '.</div>';
	}
}