diff --git a/data/calendar.yaml b/data/calendar.yaml
index e4d77ad7..7d8ede19 100644
--- a/data/calendar.yaml
+++ b/data/calendar.yaml
@@ -95,7 +95,7 @@ calendar:
     So: {}
   hinten:
     Mo:
-      "15:45":
+      "16:00":
         title: Ballet
         slots: 6
       # "18:15":