diff --git a/app.py b/app.py
index 2c289ea..a9b7798 100644
--- a/app.py
+++ b/app.py
@@ -218,7 +218,8 @@ def wetter():
         berlin = pytz.timezone("Europe/Berlin")
     now_local_dt = _dt.datetime.now(berlin)
     now_local = now_local_dt.strftime("%H:%M")
-    now_berlin_naive = now_local_dt.replace(tzinfo=None)
+    # Auf volle Stunde abrunden → aktuelle Stunde als Startpunkt
+    now_berlin_naive = now_local_dt.replace(minute=0, second=0, microsecond=0, tzinfo=None)
     current_idx = 0
     for i, h in enumerate(forecast):
         dt = h["datetime"]