diff --git a/cis/private/lvplan/stpl_kalender.php b/cis/private/lvplan/stpl_kalender.php
index 3b5129358..6d1d2f42e 100644
--- a/cis/private/lvplan/stpl_kalender.php
+++ b/cis/private/lvplan/stpl_kalender.php
@@ -119,7 +119,7 @@ if(!isset($begin))
 	$datum_obj = new datum();
 	$diff = $datum_obj->DateDiff($objSS->ende, date('Y-m-d H:i:s'));
 	
-	if($diff<=30 & $diff>0)
+	if($diff>=-30)
 	{
 		$objSS->getNextFrom($ss);
 		$ende = $datum_obj->mktime_fromdate($objSS->ende);
@@ -341,4 +341,4 @@ else
 	echo '<P class="dont-print">'.$p->t('lvplan/fehlerUndFeedback').' <A class="Item" href="mailto:'.MAIL_LVPLAN.'">'.$p->t('lvplan/lvKoordinationsstelle').'</A></P>';
 	echo '</body></html>';
 }
-?>
\ No newline at end of file
+?>
diff --git a/include/datum.class.php b/include/datum.class.php
index 1d2e8411c..bfeddc654 100644
--- a/include/datum.class.php
+++ b/include/datum.class.php
@@ -170,7 +170,7 @@ class datum
 		$datetime1 = new DateTime($datum1);
 		$datetime2 = new DateTime($datum2);
 		$interval = $datetime1->diff($datetime2);
-		return $interval->format('%R%d');
+		return $interval->format('%R%a');
 	}
 
 	/**