diff --git a/Abrechnung/module.php b/Abrechnung/module.php
index 577713a..5acbbf7 100644
--- a/Abrechnung/module.php
+++ b/Abrechnung/module.php
@@ -305,8 +305,9 @@ private function AddMeterToPDFRow($meter, $tariffs, $from, $to, $type)
 
         // Passenden Tarif für aktuellen Zeitpunkt finden
         foreach ($filteredTariffs as $t) {
-            $tariffStart = strtotime($t['start'] . ' 00:00:00');
-            $tariffEnd   = strtotime($t['end']   . ' 23:59:59');
+            $tariffStart = is_array($t['start']) ? IPS_MakeTimeStamp($t['start']) : strtotime($t['start'] . ' 00:00:00');
+            $tariffEnd   = is_array($t['end'])   ? IPS_MakeTimeStamp($t['end']) + 86399 : strtotime($t['end'] . ' 23:59:59');
+
 
             if ($tariffStart === false || $tariffEnd === false) {
                 IPS_LogMessage('Abrechnung', "❌ Ungültiges Tarifdatum: " . json_encode($t));