Set start date for default month view

/**
 * Set default month view to October 2013.
 */
add_filter('tribe_get_month_view_date', 'set_month_view_start_date');

function set_month_view_start_date($date) {
    $query = $GLOBALS['wp_query']->query;
    if (2 !== count($query) || TribeEvents::POSTTYPE !== $query['post_type'] || 'month' !== $query['eventDisplay']) return $date;
    return '2013-10-01';
}