Get the date of a post for each post

Hello WordPress users,

I’m currently building a website where I would like to display the date of a post on the hompage.

Currently I’m using the following code to do this:

$args = array( 'numberposts' => 2, 'category' => 2  );
        $postslist = get_posts( $args );

foreach($postlist as $post) :
     setup_postdata($post); ?>

     <?php the_date(); ?> , <?php the_author(); ?>

<?php endforeach;

But this code is only working for the first post.
The first post displays:
april 1, 2013, admin

But all the other posts displays:
, admin

I can’t find out what is going wrong here.
Someone who can help me out?