diff --git a/src/Controller/MonitoringApiController.php b/src/Controller/MonitoringApiController.php
index ef22943..2dbf776 100644
--- a/src/Controller/MonitoringApiController.php
+++ b/src/Controller/MonitoringApiController.php
@@ -140,6 +140,8 @@ class MonitoringApiController extends AbstractController
             $line['data'][] = $entity->getValue();
             $line2['data'][] = 50;
 
+            $lightTime = (int) $entity->getDate()->format('gi');
+
             if ($lightTime >= $lightOn && $lightTime <= $lightOff) {
                 $lightOn['data'][] = 5;
                 $lightOff['data'][] = 0;