What are you doing: Sunday data?

//=======================================================================================================================================
//user defined function calculates the average daily range
//=======================================================================================================================================
double UDF_AverageDailyRange(int AvePeriod){ 
   int      ADR_limit   =  (ADR_period  * 86400);
   double   DRsum       =  0.0;  //sum of daily ranges
   int      TimeCount   =  0;    //counter to monitor time value
   int      Counter     =  1;    //used to define the bar shift
            
   while(TimeCount <= ADR_limit){//start while
      datetime Day_U = iTime(Symbol(),1440,Counter);  //Use this function to find a date x (Counter in this case) number of bars back including the current bar
      int weekday    = TimeDayOfWeek(Day_U);          // use this to determine whether the day is a weekend.
                  
      if(weekday != 0 || weekday != 6){
         TimeCount   += 86400;
         DRsum       += (iHigh(Symbol(),PERIOD_D1,Counter) - iLow(Symbol(),PERIOD_D1,Counter));
      }
      Counter ++;
   }//end while
            
   double ADR  =  (DRsum / ADR_period);//average daily range value
   return(ADR);
}