If post is from same date, print time

Hi there.
When there are multiple posts on a page published under the same day, the_date() only displays the date for the first post. So I thought i’d try to make a php snippet that outputs the_time() for the other posts on the same date.

<?php
$postdate = the_date('j. F, Y');
$posttime = the_time('G:i');
if ($postdate != '') { echo $postdate; }
else { echo $posttime; }
?>

My php skills are way under par though, and I can’t get it to work.

Can somebody help? ..and is there maybe a better way to do this?