Data are not displayed

Hello,

I’ve got a problem with my blog dates. The problem is that if the entry was added on the same day as the previous one in the previous data is not displayed. Please help!

http://demo.oskarstrasburger.pl/news/

<?php get_header(); ?>
<?php get_sidebar(); ?>
		<div id="content">
			<?php if (have_posts()) : while (have_posts()) : the_post(); ?>
			<div class="event">
				<a href="<?php the_permalink(); ?>"><h2><?php the_title(); ?></h2></a>
				<div class="entry">
				<?php the_content(); ?>
					<div class="clear">
					<span class="date"><b>Dodano:</b> <?php the_date('d/m/Y'); ?></span>
					</div>
				</div>
			</div>
			<?php endwhile; endif; ?>
				<h2>Sponsorzy WiterCamp 2011</h2>
				<div class="entry">
					<?php wp_list_bookmarks('title_li=&categorize=0&orderby=ID&category=19'); ?>
				</div>
		</div>
	</div>
	<div id="container_bottom"></div>
</div>
<?php get_footer(); ?>