Index: trunk/BNC/bncapp.cpp
===================================================================
--- trunk/BNC/bncapp.cpp	(revision 1548)
+++ trunk/BNC/bncapp.cpp	(revision 1549)
@@ -161,5 +161,7 @@
   // First time resolve the log file name
   // ------------------------------------
-  if (_logFileFlag == 0) {
+  QDate currDate = currentDateAndTimeGPS().date();
+  if (_logFileFlag == 0 || _fileDate != currDate) {
+    delete _logFile;
     _logFileFlag = 1;
     bncSettings settings;
@@ -167,5 +169,7 @@
     if ( !logFileName.isEmpty() ) {
       expandEnvVar(logFileName);
-      _logFile = new QFile(logFileName);
+      _logFile = new QFile(logFileName + "_" + 
+                          currDate.toString("yyMMdd").toAscii().data());
+      _fileDate = currDate;
       if ( Qt::CheckState(settings.value("rnxAppend").toInt()) == Qt::Checked) {
         _logFile->open(QIODevice::WriteOnly | QIODevice::Append);
Index: trunk/BNC/bncapp.h
===================================================================
--- trunk/BNC/bncapp.h	(revision 1548)
+++ trunk/BNC/bncapp.h	(revision 1549)
@@ -100,4 +100,5 @@
     QMultiMap<long, QString>* _corrs;
     QString             _confFileName;
+    QDate          _fileDate;
 };
 #endif
Index: trunk/BNC/bnchelp.html
===================================================================
--- trunk/BNC/bnchelp.html	(revision 1548)
+++ trunk/BNC/bnchelp.html	(revision 1549)
@@ -199,5 +199,5 @@
 <p><a name="genlog"><h4>3.4.1 Logfile - optional</h4></p>
 <p>
-Records of BNC's activities are shown in the 'Logs' canvas on the bottom of the main window. These logs can be saved into a file when a valid path is specified in the 'Logfile (full path)' field. The message log covers the communication status between BNC and the NTRIP broadcaster as well as problems that may occur in the communication link, stream availability, stream delay, stream conversion etc. All times are given in UTC. The default value for 'Logfile (full path)' is an empty option field, meaning that BNC logs will not saved into a file.
+Records of BNC's activities are shown in the 'Logs' canvas on the bottom of the main window. These logs can be saved into daily logfiles when a valid path is specified in the 'Logfile (full path)' field. The logfile name will automatically be extended by a date string '_YYMMDD' carrying the current date. Message logs cover the communication status between BNC and the NTRIP broadcaster as well as problems that may occur in the communication link, stream availability, stream delay, stream conversion etc. All times are given in UTC. The default value for 'Logfile (full path)' is an empty option field, meaning that BNC logs will not saved into a file.
 </p>