while ($sunday_query->have_posts()) {
    $sunday_query->the_post();
    $sort_array = [];
    $schedules = get_post_meta($post->ID, 'show_sched', false);
    $title = get_the_title();
    
    usort($schedules, function ($a, $b) {
        return $a[0]['start_hour'] > $b[0]['start_hour'] ? 1 : -1;
    });

    array_filter($schedules, function ($schedule) {
        return $schedule['day'] === 'Sunday';
    }

    foreach($sort_array as $sort) {
        foreach($sort as $key => $value) {
            $day = $value['day'];
            $order = $value['start_hour'];
            
            echo $day.', ' . $order . ', ' . $title . '<br>';
        }
    }
}