Index: sources/view/settings/VDateTime.cpp
===================================================================
diff -u -r80b5e8f1ebb90c03c37d90d90cd2da3bd95d6803 -rff9c1810af33c01951d0639a48e9f6eb7152fa15
--- sources/view/settings/VDateTime.cpp	(.../VDateTime.cpp)	(revision 80b5e8f1ebb90c03c37d90d90cd2da3bd95d6803)
+++ sources/view/settings/VDateTime.cpp	(.../VDateTime.cpp)	(revision ff9c1810af33c01951d0639a48e9f6eb7152fa15)
@@ -30,6 +30,7 @@
 
     ACTION_VIEW_CONNECTION(AdjustHDDateTimeResponseData);
     ACTION_VIEW_CONNECTION(AdjustDGDateTimeResponseData);
+    ACTION_VIEW_CONNECTION(HDRTCEpochData);
     ADJUST_VIEW_CONNECTION( AdjustHDDateTimeRequestData);
     ADJUST_VIEW_CONNECTION( AdjustDGDateTimeRequestData);
 
@@ -75,32 +76,26 @@
     day     ( vDay    );
     hour    ( vHour   );
     minute  ( vMinute );
-    quint32 epoch =
-            QDateTime(
-                QDate(_year     .toInt() ,
-                      _month    .toInt() ,
-                      _day      .toInt()),
-                QTime(_hour     .toInt() ,
-                      _minute   .toInt())
-            ).toSecsSinceEpoch();
 
-    // the accepted format of the Linux data command:
-    // example: 2021-03-16 16:24:00
-    QString mDateTime = QString("%1-%2-%3 %4:%5:%6")
-            .arg(_year  )
-            .arg(_month )
-            .arg(_day   )
-            .arg(_hour  )
-            .arg(_minute)
-            .arg(_second);
+    const QDateTime currentDateTimeLocal ( QDate(_year     .toInt() ,
+                                           _month    .toInt() ,
+                                           _day      .toInt()),
+                                     QTime(_hour     .toInt() ,
+                                           _minute   .toInt()));
+    const QString dateTimeLocalStr = currentDateTimeLocal.toString(_Settings.getDatetimeFormat());
 
-    LOG_DEBUG(tr("SetDateTime %1").arg(mDateTime));
+    // Get the current UTC datetime
+    QDateTime currentDateTimeUTC(currentDateTimeLocal);
+    currentDateTimeUTC.setTimeSpec(Qt::UTC);
+    const quint32 epochUTC_sec = currentDateTimeUTC.toSecsSinceEpoch();
 
+    LOG_DEBUG(tr("SetDateTime %1").arg(dateTimeLocalStr));
+
     status("Setting date and time ...");
 
-    dateTimeUI(mDateTime);
-    dateTimeHD(epoch    );
-    dateTimeDG(epoch    );
+    dateTimeUI(dateTimeLocalStr);
+    dateTimeHD(epochUTC_sec     );
+    dateTimeDG(epochUTC_sec     );
 }
 
 /*!
@@ -247,3 +242,29 @@
     quint16 military = _currentDateTime.time().hour() * 100 + _currentDateTime.time().minute();
     greeting(military);
 }
+
+/*!
+ *
+ * \brief   VHDPOSTData::onActionReceive
+ * \details received response model data handler
+ * \param   vData - model data
+ */
+void VDateTime::onActionReceive(const HDRTCEpochData &vData)
+{
+    // Doing a single update of the HD-UI RTC sync on start-up
+    static bool _hasDoneHDSyncRTC = false;
+    if ( !_hasDoneHDSyncRTC ) {
+        QDateTime hdRTCTime;
+        hdRTCTime.setSecsSinceEpoch(vData.mEpoch);
+        hdRTCTime.setTimeSpec(Qt::UTC);
+
+        QDateTime localDateTime = hdRTCTime.toLocalTime();
+
+        QString newDateTimeString = localDateTime.toString(_Settings.getDatetimeFormat());
+        dateTimeUI(newDateTimeString);
+
+        //DEBUG: qDebug() << "Sync HD-UI RTC | HD Epoch: " << vData.mEpoch << " | HD datetime: " << hdRTCTime.toString(_Settings.getDatetimeFormat()) <<" | datetime : " << newDateTimeString;
+
+        _hasDoneHDSyncRTC = true; // indicate HD-UI RTC sync'd
+    }
+}