TEC > Orders Related Events by Event Start Date

functions.php

<?php
/*
 * Orders Related Events by Event Start Date
 */
function tribe_related_posts_args_limiter ( $args = array() ) {	
	$args['meta_key'] = '_EventStartDate';
    $args['orderby'] = 'meta_value';
    return $args;
}
add_filter( 'tribe_related_posts_args', 'tribe_related_posts_args_limiter', 10, 1 );