diff --git a/app/Contribution/Data/MemberData.php b/app/Contribution/Data/MemberData.php
index 9e44f910..b562b421 100644
--- a/app/Contribution/Data/MemberData.php
+++ b/app/Contribution/Data/MemberData.php
@@ -74,7 +74,7 @@ class MemberData extends Data
 
     public function age(): string
     {
-        return (string) $this->birthday->diffInYears(now()) ?: '';
+        return $this->birthday ? intval($this->birthday->diffInYears(now())) : '';
     }
 
     public function birthYear(): string
diff --git a/app/Contribution/Documents/CityFrankfurtMainDocument.php b/app/Contribution/Documents/CityFrankfurtMainDocument.php
index 92e1a146..63e6acdd 100644
--- a/app/Contribution/Documents/CityFrankfurtMainDocument.php
+++ b/app/Contribution/Documents/CityFrankfurtMainDocument.php
@@ -3,15 +3,16 @@
 namespace App\Contribution\Documents;
 
 use App\Contribution\Data\MemberData;
+use App\Contribution\Traits\FormatsDates;
 use App\Contribution\Traits\HasPdfBackground;
 use App\Country;
 use App\Invoice\InvoiceSettings;
-use Carbon\Carbon;
 use Illuminate\Support\Collection;
 
 class CityFrankfurtMainDocument extends ContributionDocument
 {
     use HasPdfBackground;
+    use FormatsDates;
 
     public string $fromName;
 
@@ -62,17 +63,6 @@ class CityFrankfurtMainDocument extends ContributionDocument
         );
     }
 
-    public function dateFromHuman(): string
-    {
-        return Carbon::parse($this->dateFrom)->format('d.m.Y');
-    }
-
-    public function dateUntilHuman(): string
-    {
-        return Carbon::parse($this->dateUntil)->format('d.m.Y');
-    }
-
-
     public function countryName(): string
     {
         return $this->country->name;
@@ -83,26 +73,6 @@ class CityFrankfurtMainDocument extends ContributionDocument
         return count($this->members);
     }
 
-    public function memberShort(MemberData $member): string
-    {
-        return $member->isLeader ? 'L' : '';
-    }
-
-    public function memberName(MemberData $member): string
-    {
-        return $member->separatedName();
-    }
-
-    public function memberAddress(MemberData $member): string
-    {
-        return $member->fullAddress();
-    }
-
-    public function memberAge(MemberData $member): string
-    {
-        return $member->age();
-    }
-
     public static function getName(): string
     {
         return 'Frankfurt';
diff --git a/resources/views/tex/contribution/city-frankfurt-main.tex b/resources/views/tex/contribution/city-frankfurt-main.tex
index c01dd016..5ae765c4 100644
--- a/resources/views/tex/contribution/city-frankfurt-main.tex
+++ b/resources/views/tex/contribution/city-frankfurt-main.tex
@@ -18,15 +18,15 @@
             \node[anchor=base west, text width=205.3mm] at (52.9mm,31.0mm) {\bfseries{\large{<<<!!$fromName!!>>>}}};   %Feld: Jugendverband/-Gruppe
             \node[anchor=base west, text width=215.9mm] at (41.3mm,38.8mm) {\bfseries{\large{<<<!!$eventName!!>>>}}};   %Feld: Art der Maßnahme
             \node[anchor=base west, text width=104.8mm] at (17.5mm,47.0mm) {\bfseries{\large{<<<!!$zipLocation!!>>>, <<<!!$countryName!!>>>}}};
-            \node[anchor=base west, text width=41.3mm, align=center] at (170.7mm,47.0mm) {\bfseries{\large{<<<!!$dateFromHuman()!!>>>}}};
-            \node[anchor=base west, text width=38.4mm, align=center] at (219.9mm,47.0mm) {\bfseries{\large{<<<!!$dateUntilHuman()!!>>>}}};
+            \node[anchor=base west, text width=41.3mm, align=center] at (170.7mm,47.0mm) {\bfseries{\large{<<<!!$niceDateFrom()!!>>>}}};
+            \node[anchor=base west, text width=38.4mm, align=center] at (219.9mm,47.0mm) {\bfseries{\large{<<<!!$niceDateUntil()!!>>>}}};
 
             @foreach($chunk as $j => $member)
-                \node[anchor=base, text width=4mm, align=center] at ($(8.0mm, 69.0mm + 8.05mm * <<<$j%15>>>)$) {<<<$memberShort($member)>>>};
+                \node[anchor=base, text width=4mm, align=center] at ($(8.0mm, 69.0mm + 8.05mm * <<<$j%15>>>)$) {<<<$member->isLeader ? 'L' : ''>>>};
                 \node[anchor=base, text width=6mm, align=center] at ($(13.0mm, 69.0mm + 8.05mm * <<<$j%15>>>)$) {<<<$j+1>>>};
-                \node[anchor=base, text width=67.5mm, align=center] at ($(50.65mm, 69.0mm + 8.05mm * <<<$j%15>>>)$) {<<<$memberName($member)>>>};
-                \node[anchor=base, text width=14.6mm, align=center] at ($(92.2mm, 69.0mm + 8.05mm * <<<$j%15>>>)$) {<<<$memberAge($member)>>>};
-                \node[anchor=base, text width=79.4mm, align=center] at ($(139.7mm, 69.0mm + 8.05mm * <<<$j%15>>>)$) {<<<$memberAddress($member)>>>};
+                \node[anchor=base, text width=67.5mm, align=center] at ($(50.65mm, 69.0mm + 8.05mm * <<<$j%15>>>)$) {<<<$member->separatedName()>>>};
+                \node[anchor=base, text width=14.6mm, align=center] at ($(92.2mm, 69.0mm + 8.05mm * <<<$j%15>>>)$) {<<<$member->age()>>>};
+                \node[anchor=base, text width=79.4mm, align=center] at ($(139.7mm, 69.0mm + 8.05mm * <<<$j%15>>>)$) {<<<$member->fullAddress()>>>};
             @endforeach
 
             \node[anchor=base, text width=23.0mm, align=center] at (278.2mm,196.1mm) {Seite <<<!!$i + 1!!>>> von <<<!!$pages!!>>>};