Solution: Display date in search results

In search.php (in child theme):

		<main id="main" class="post-wrap" role="main">
      <?php if (have_posts()) : ?>
         <h2 class="info"><?php echo $wp_query->found_posts; ?> Suchergebnisse f&uuml;r <strong><?php echo $s ?></strong></h2>
         <p>&nbsp;</p>

         <?php while (have_posts()) : the_post(); ?>
            <div><?php
# 'single-el_events.php' must be set in Event List > Settings > Frontend Settings > Events permalink slug
if(strpos(get_the_permalink(),'single-el_events.php')){
	$meta_key = 'startdate';
	$getTheID = get_the_ID();
	$allmiles = $wpdb->get_var( $wpdb->prepare("SELECT meta_value FROM $wpdb->postmeta WHERE meta_key = %s AND post_id = $getTheID",$meta_key));
	$temp_date = new DateTime($allmiles);
	$month = $temp_date->format('M');
	# if month names in english but should show in german:
	$months = array("Jan"=>"Jan","Feb"=>"Feb","Mar"=>"M&auml;r","Apr"=>"Apr","May"=>"Mai","Jun"=>"Jun","Jul"=>"Jul","Aug"=>"Aug","Sep"=>"Sep","Oct"=>"Okt","Nov"=>"Nov","Dec"=>"Dez");
	#$pref_el_events = $temp_date->format('d. M Y').': ';
	$pref_el_events = $temp_date->format('d.').' '.$months[$month].' '.$temp_date->format('Y').'<br />';
}else{
	$pref_el_events = '';
}
?></div>
            <h4><a href="<?php the_permalink() ?>"><?php echo $pref_el_events; the_title(); ?></a></h2>
            <div class="entry"><?php the_excerpt(); ?></div>
         <?php endwhile; ?>
       
         <p align="center"><?php previous_posts_link('&laquo; Zur&uuml;ck') ?> | <?php next_posts_link('Weitere Suchergebnisse &raquo;') ?></p>
          
      <?php else : ?>
         <h2>Leider nichts gefunden</h2>
       
      <?php endif; ?>
		</main><!-- #main -->

In single-el_events.php (in child theme):

		<main id="main" class="post-wrap" role="main">
<?php
$event_id = get_the_ID();
$startdate = get_post_meta($event_id, 'startdate', true);
$enddate = get_post_meta($event_id, 'enddate', true);
$starttime = get_post_meta($event_id, 'starttime', true);
$location = get_post_meta($event_id, 'location', true);
#$content = get_post_meta($event_id, 'content', true);
$content = $post->post_content;
$title = $post->post_title;
#print_r($event_id);
?>
<h1>Termin</h1>
<div class="event-list">
	<ul class="event-list-view">
		<li class="event">
			<div class="event-date">
				<div class="startdate">
					<div class="event-weekday"><?php echo mysql2date('D', $startdate); ?></div>
					<div class="event-day"><?php echo mysql2date('d', $startdate); ?></div>
					<div class="event-month"><?php echo mysql2date('M', $startdate); ?></div>
					<div class="event-year"><?php echo mysql2date('Y', $startdate); ?></div>
				</div>
			</div>
			<div class="event-info single-day">
				<div class="event-title">
					<h3>
						<?php echo $title; ?>
					</h3>
				</div>
				<span class="event-time">
					<?php echo substr($starttime,0,5); ?>
				</span>
				<div class="event-content">
					<p>
						<?php echo $content; ?>
					</p>
				</div>
			</div>
		</li>
	</ul>
</div>
<p style="margin:30px 0 30px 0"><a href="javascript:history.back();">&laquo; Eine Seite zurück</a></p>
		</main><!-- #main -->