Fix rounding

main.py

@@ -470,7 +470,7 @@ def try_send_schedule_again(context: CallbackContext) -> None:
 
 def send_scheduled(context: CallbackContext) -> None:
     dt = datetime.now()
-    dt += timedelta(minutes=EVERY_X_MINUTES)
+    dt += timedelta(minutes=EVERY_X_MINUTES / 2)
     dt -= timedelta(
         minutes=dt.minute % EVERY_X_MINUTES,
         seconds=dt.second,