// define external Opening and Closing time
extern string MarketOpeningTime= "09:00:";
extern string MarketClosingTime= "17:30:";

// index in the time string
int indexMarketOpeningTime=0;
int indexMarketClosingTime=0;

// Output for the condition
string MarketState="closed";

void OnTick()
  {
	  // create a time string
     string TimeWithSeconds=TimeToStr(TimeLocal(),TIME_DATE|TIME_SECONDS);
     
	  // find out if the Opening time is in the time string
	  indexMarketOpeningTime=StringFind(TimeWithSeconds,(MarketOpeningTime),0); 
	  
	  // find out if the Closing time is in the time string
	  indexMarketClosingTime=StringFind(TimeWithSeconds,(MarketClosingTime),0);
	  
	  // if the OpeningTime was found
	  if (indexMarketOpeningTime>0)
	  MarketState="open";

	  // if the ClosingTime was found	  
	  if (indexMarketClosingTime>0)
	  MarketState="closed";	  
	  
	  // Create an output
	  Comment ("Time: ",TimeWithSeconds, " Market is ",MarketState);     
      
  }