$date_point = new DateAndTime(); // Represents current date. TODO: verify this is needed, as this is server time, not browser today.
 
     // TODO: refactoring ongoing down from here. Make code nicer, etc.
-    $weekStartDay = $user->week_start;
+    $weekStartDay = $user->getWeekStart();
 
                $this->startDate = new DateAndTime();
                $this->startDate->setFormat($date_point->getFormat());
 
       
       $this->mMonthNames = $i18n->monthNames;
       $this->mWeekDayShortNames = $i18n->weekdayShortNames;
-      $this->weekStartDay = $user->week_start;
+      $this->weekStartDay = $user->getWeekStart();
     }
 
     function setStyle($style) { $this->style = $style; }
 
     $this->lCalendarButtons['close'] = $i18n->get('button.close');
 
     $this->mDateFormat = $user->getDateFormat();
-    $this->mWeekStartDay = $user->week_start;
+    $this->mWeekStartDay = $user->getWeekStart();
   }
 
   // set current value taken from session or database
 
     return ($this->behalfGroup ? $this->behalfGroup->time_format : $this->time_format);
   }
 
+  // getWeekStart returns week start day for active group.
+  function getWeekStart() {
+    return ($this->behalfGroup ? $this->behalfGroup->week_start : $this->week_start);
+  }
+
   // getTrackingMode returns tracking mode for active group.
   function getTrackingMode() {
     return ($this->behalfGroup ? $this->behalfGroup->tracking_mode : $this->tracking_mode);
 
       <br>
       <table cellspacing="0" cellpadding="4" width="100%" border="0">
         <tr>
-          <td align="center"> Anuko Time Tracker 1.19.4.4994 | Copyright © <a href="https://www.anuko.com/lp/tt_3.htm" target="_blank">Anuko</a> |
+          <td align="center"> Anuko Time Tracker 1.19.4.4995 | Copyright © <a href="https://www.anuko.com/lp/tt_3.htm" target="_blank">Anuko</a> |
             <a href="https://www.anuko.com/lp/tt_4.htm" target="_blank">{$i18n.footer.credits}</a> |
             <a href="https://www.anuko.com/lp/tt_5.htm" target="_blank">{$i18n.footer.license}</a> |
             <a href="https://www.anuko.com/lp/tt_7.htm" target="_blank">{$i18n.footer.improve}</a>
 
 $_SESSION['date'] = $cl_date;
 
 // Determine selected week start and end dates.
-$weekStartDay = $user->week_start;
+$weekStartDay = $user->getWeekStart();
 $t_arr = localtime($selected_date->getTimestamp());
 $t_arr[5] = $t_arr[5] + 1900;
 if ($t_arr[6] < $weekStartDay)