Index: sources/maintimer.h
===================================================================
diff -u -rc6a09899d2e46dc0bda5a6b994aa257953626f97 -rd04653f0fbf1ed98178b6c7094beb4ec226a777f
--- sources/maintimer.h	(.../maintimer.h)	(revision c6a09899d2e46dc0bda5a6b994aa257953626f97)
+++ sources/maintimer.h	(.../maintimer.h)	(revision d04653f0fbf1ed98178b6c7094beb4ec226a777f)
@@ -39,9 +39,10 @@
     void quit();
 
 private:
-
+    bool isDateChanged();
 signals:
     void didTimeout();
+    void didDateChange();
 
 protected:
       void timerEvent(QTimerEvent *) override;