I wrote a function so an indicator can send one pseudo-tick to chart if the market is closed, any way to improve it?

Hello,

This code appears to work great when dropping an indicator on a chart when the market is closed.  I've prevented recursive calls with a static variable.

Hoping an expert might be willing to evaluate this code for:

- Internal terminal behavior which makes this inadvisable?

- Some cool idea how I can only execute the pseudo-tick one time if loading a template with 5 indicators each using this function? (not critical but if there's a cool way I'd like to learn).

- Anything in my code which is more complicated than necessary? 

Thanks, much appreciated!

Function call from end of OnCalculate()

.....
   sendTickIfMktClosed();       
        
   return(rates_total);
  }

and the function:

//+------------------------------------------------------------------+
//                                                                   |
//+------------------------------------------------------------------+
void sendTickIfMktClosed()
   {
        // IF MARKET IS CLOSED, SEND A PSEUDO TICK TO UPDATE THE CHART
        datetime startTime=0;
        datetime endTime=0;
        MqlDateTime cTime, sTime, eTime;
        datetime compareTime=TimeCurrent();
        TimeToStruct(compareTime,cTime);
        
        // get the market hours:mins:seconds
        ENUM_DAY_OF_WEEK dayOfWeek;
        dayOfWeek=cTime.day_of_week;
        SymbolInfoSessionTrade(_Symbol,dayOfWeek,0,startTime,endTime);
        
        // convert market hours to year.mon.day of current time
        TimeToStruct(startTime,sTime);
        TimeToStruct(endTime,eTime);
        sTime.year=cTime.year;
        sTime.mon=cTime.mon;
        sTime.day=cTime.day;
        eTime.year=cTime.year;
        eTime.mon=cTime.mon;
        eTime.day=cTime.day;
        datetime openTime=StructToTime(sTime);
        datetime closeTime=StructToTime(eTime);
        
   // should print only once when market is open, and only twice when market is closed.
   // Print("Market Times detected for ",cTime.year,".",cTime.mon,".",cTime.day,": ",openTime," - ",closeTime);
   // -> Market Times detected for 2022.5.30: 2022.05.30 00:05:00 - 2022.05.30 23:55:00
   
   // make sure the pseudo tick only executes once
   static bool mkt_tickedOnce=false;
   
   // if market is closed all day OR current time is outside of market hours for the symbol
        if(   (startTime==D'1970.01.01' && endTime==D'1970.01.01') 
                 || (compareTime>closeTime && compareTime<openTime)
              )
           {
           if(mkt_tickedOnce==false)
              {
              mkt_tickedOnce=true;
              // send the pseudo tick, but only one time or each ChartSetSymbolPeriod() will cause it to execute again.
              ChartSetSymbolPeriod(0,NULL,0);
              }
           }
   }
//+------------------------------------------------------------------+