static double time1=0;

...
void init()
{
return(0)
}

int start()
{

 if (CurTime()<= time1)
  {
  //Print(" Cur: ",TimeToStr(CurTime(),TIME_DATE|TIME_SECONDS)," time1:  ",TimeToStr(time1,TIME_DATE|TIME_SECONDS));
    
    return(0);
  }

   SellOrdOpen();
   time1 = CurTime()+360;
}