time stamp not showing up

Hi I have Unleashed3c theme and I don’t have a date time stamp for my post. Is there a way to correct this?

My index page of template is this:

<?php get_header(); ?>

<div id=”content”>

<?php include(TEMPLATEPATH.”/l_sidebar.php”);?>

<div id=”contentleft”>
<?php if (have_posts()) : while (have_posts()) : the_post(); ?>
<h1>” rel=”bookmark”><?php the_title(); ?></h1>
<p>Filed Under <?php the_category(‘, ‘) ?></p>
<?php the_content(__(‘Read more’));?><div style=”clear:both;”></div>

<!–
<?php trackback_rdf(); ?>
–>

<?php endwhile; else: ?>

<p><?php _e(‘Sorry, no posts matched your criteria.’); ?></p><?php endif; ?>

<h1>Comments</h1>
<?php comments_template(); // Get wp-comments.php template ?>
</div>

<?php include(TEMPLATEPATH.”/r_sidebar.php”);?>

</div>

<!– The main column ends –>

<?php get_footer(); ?>

I dont see where to add a time/date stamp can you help?