Yeah, forgot about that…you’ll have to add something extra.
So, I’ve been using it on a client site – it needed to be done fast, so please excuse the barbarian way I chose 
Add this to the top of your category template (below the header call):
<?php $arc_year = get_the_time('Y');
$arc_month = get_the_time('m');
$arc_day = get_the_time('d');
?>
Now it should work.
Then, when you need to create links to the date archive, use something like this:
<a href="<?php echo get_month_link($arc_year, $arc_month); ?>" title="All articles from <?php unset($previousday); printf( __( '%1$s', 'wpbx' ), the_date( 'j F Y', '', '', false ) ) ?>">
<?php unset($previousday); printf( __( '%1$s', 'wpbx' ), the_date( '', '', '', false ) ) ?>
</a>
If you find something lighter/easier, do share 
Hope it helps…