Please help me

I want to make a list based on the name of the day ordered
based on the selected category

I have code like this but it doesn’t work orderby day

<?php


$args = array( 'posts_per_page' => 100, 'offset'=> 0, 
'category' => 338,'order'=> 'asc', 'orderby' => 'day');



$myposts = get_posts( $args );
foreach ( $myposts as $post ) : setup_postdata( $post ); ?>

<tr>
<td><a href="<?php the_permalink() ?>" rel="bookmark" title="<?php the_title(); ?>"><?php the_title(); ?></a></td>
<td><?php the_time('l'); ?></td>
<td><?php the_time('H:i'); ?> Wib</td>
</tr>
<?php endforeach; 
wp_reset_postdata();?>

1 week is equal to 7 days
how to make wordpres code sorted by day. ?