Pivot_AXEL_MF_0-3255

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//|                                MF_Pivot AXEL 0-2255.mq4           |
//|                                Copyright © YuraZ-VAF-Zhunko-Nestor|
//|                                MF YURAZ     yzh@mail.ru           |
//|                                MF VAF  vazh-af@inbox.ru           |
//|                                MF ZHUNKO zhunko@mail.ru           |
//|                                MF NESTOR a_nesterchuk@mail.ru     |
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//| Èäèêàòîð ðàçðàáîòàí ïî ìàòåðèàëàì ÀÊÀÄÅÌÈÈ ÌÔ.                    |
//| ÈÑÏÐÀÂËÅÍÍÀß ÂÅÐÑÈß.                                              |
//| Ñîâïàäàåò ñ òî÷íîñòüþ 5ï ñ óðîâíÿìè DJ îò Axel Rudolph !          |
//| Áåðåò äàííûå ñ M1.                                                |
//|                          ÂÍÈÌÀÅÍÈÅ!                               |
//| Åñëè âàøå ÄÖ äà¸ò íå òî÷íûå êîòèðîâêè - PIVOT íå áóäåò ñîâïàäàòü. |
//+-------------------------------------------------------------------+
//|                    ÈÇÌÅÍÅÍÈß è ÄÎÏÎËÍÅÍÈß.                        |
//| 1.Äîïîëíåíèÿ â âåðñèè MF_Pivot AXEL 0-101 îò 06.09.2006 .         |
//| 1.1.Âîçìîæíî ïåðåìåùåíèå âñåé íàäïèñè ïî ýêðàíó êîîðäèíàòàìè XY   |
//| 1.2.Ââåäåíû íàñòðîéêè ïî óìîë÷àíèþ.                               |
//| 1.3.Ââåäåíà íàñòðîéêà öâåòà òåêñòà.                               |
//| 2.Äîïîëíåíèÿ â âåðñèè MF_Pivot AXEL 0-102 îò 08.09.2006 .         |
//| 2.1.Èñïðàâëåíà îøèáêà îòðèñîâêè ëèíèè â íåêîòîðûõ òåðìèíàëàõ.     |
//| 3.Äîïîëíåíèÿ â âåðñèè MF_Pivot AXEL 0-103 îò 09.09.2006 .         |
//| 3.1.Èçìåí¸í ïåðåêëþ÷àòåëü âûâîäà òåêñòà íà ëîãè÷åñêèé.            |
//| 3.2.Èçìåíåíû íàçâàíèÿ âíåøíèõ ïåðåìåííûõ.                         |
//| 3.3.Ââåäåíû îòñóòñòâóþùèå êîìåíòàðèè â èñõîäíèê.                  |
//| 3.4.Èçìåíåíà íàñòðîéêà ðàçíèöû âðåìåíè ìåæäó ÌÒ4 è GMT.           |
//| 4.Äîïîëíåíèÿ â âåðñèè MF_Pivot AXEL 0-113 îò 14.09.2006 .         |
//| 4.1.Ââåäíà íå÷óâñòâèòåëåííîñòü ê ïðîïóùåííûì áàðàì.               |
//| 5.Äîïîëíåíèÿ â âåðñèè MF_Pivot AXEL 0-114 îò 17.09.2006 .         |
//| 5.1.Óïðîùåíû íàñòðîéêè âðåìåíè êîíöà ïåðèîäà ðàñ÷¸òà è âðåìåíè    |
//|     íà÷àëà îòðèñîâêè ëèíèè.                                       |
//| 5.2.Íà âàëþòíûõ ïàðàõ, ñîäåðæàùèõ JPY, â òåêñòîâîé ñòðîêå öèôðîâîå|
//|     çíà÷åíèå ïîñëå çàïÿòîé ñîäåðæèò äâà çíàêà. Íà îñòàëüíûõ       |
//|     âàëþòíûõ ïàðàõ - ÷åòûðå.                                      |
//| 6.Äîïîëíåíèÿ â âåðñèè MF_Pivot AXEL 0-214 îò 18.09.2006 .         |
//| 6.1 Äîðàáîòêà âûâîäà êîëè÷åñòâà çíàêîâ äëÿ âàëþòíûõ ïàð â         |
//|     òåêñòîâîì îòîáðàæåíèè.                                        |
//| 7.Äîïîëíåíèÿ â âåðñèè MF_Pivot AXEL 0-224 îò 19.09.2006 .         |
//| 7.1.Óñòðàíåíà îøèáêà íà÷àëà ðàñ÷¸òà â ïîíåäåëüíèê.                |
//| 8.Äîïîëíåíèÿ â âåðñèè MF_Pivot AXEL 0-225 îò 24.09.2006 .         |
//| 8.1.Óñòðàíåíà îøèáêà íà÷àëà ðàñ÷¸òà â àçèàòñêóþ ñåññèþ.           |
//| 8.2.Ïðè îòñóòñòâèè äàííûõ äëÿ ðàñ÷¸òà âìåñòî "99999999,0000"      |
//|     âûâîäèòñÿ "0,0000".                                           |
//| 9.Äîïîëíåíèÿ â âåðñèè MF_Pivot AXEL 0-2254 îò 06.10.2006 .        |
//| 9.1.Êîððåêòíîå îòîáðàæåíèå ïîêàçàíèé â çàâèñèìîñòè îò èçìåíåíèÿ   |
//|     ïàðàìåòðîâ ñòàðòà ðàñ÷¸òà.                                    |
//| 9.2.Îïòèìèçàöèÿ êîäà ïðåîáðàçîâàíèé.                              |
//| 9.3.Èçìåíåíèå àëãîðèòìà ðàñ÷¸òà ìèíèìóìîâ è ìàêñèìóìîâ ñåññèé.    |
//| 10.Äîïîëíåíèÿ â âåðñèè MF_Pivot AXEL 0-2255 îò 06.11.2006         |
//| 10.1.Ïåðåõîä íà âû÷èñëåíèå ïî âûøåèäóùåìó òàéì-ôðåéìó äëÿ äíåé, ó |
//|      êîòîðûõ îòñóòñòâóåò ïîëíàÿ èñòîðèÿ íà ìëàäøèõ òàéì-ôðåéìàõ.  |
//| 10.2.Ïîäêîððåêòèðîâàí àëãîðèòì ðàñ÷åòà ïèâîòà íà åâðîïåéñêóþ      |
//|      ñåññèþ â çèìíåå âðåìÿ.                                       |
//| 10.3.Îïòèìèçèðîâàíà çàãðóçêà êîìïüþòåðà. Âû÷èñëåíèå çíà÷åíèÿ      |
//|      òîëüêî ïðè ïîÿâëåíèè íîâîé ñâå÷è, à íå ñ êàæäûì òèêîì.       |
//| 11.  Äîïîëíåíèÿ â âåðñèè MF_Pivot AXEL 0-3255 îò 25.08.2007       |     
//| 11.1.Äîáàâëåíà ôóíêöèÿ àâòîìàòè÷åñêîãî îïðåäåëåíèÿ                |
//|      ëåòíåãî çèìíåãî âðåìåíè                                      |
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#property copyright "Copyright © 2006 YuraZ-VAF-Zhunko-Nestor"
#property link      "yzh@mail.ru ; vazh-af@inbox.ru ; zhunko@mail.ru ; a_nesterchuk@mail.ru"


#property indicator_chart_window 
#property indicator_buffers 1
//Öâåò ïî óìîë÷àíèþ.
#property indicator_color1 Gold
//Ñòèëü ïî óìîë÷àíèþ.
#property indicator_style1 STYLE_DASH
//Òîëùèíà ëèíèè ïî óìîë÷àíèþ.
#property indicator_width1 1
//----Ëîêàëèçàöèÿ---------------------------------------------------------------------------------------------------------------------------------
extern int    Äíåé = 30;                       // Êîëè÷åñòâî ðàñ÷èòûâàåìûõ äíåé.
extern int    Âðåìÿ_ÄÖ = 2;                    // Ðàçíèöà âî âðåìåíè ìåæäó ÌÒ4 è GMT.
//----Íàñòðîéêà äëèíû ïåðèîäà ðàñ÷¸òà-------------------------------------------------------------------------------------------------------------
extern double Asia_ïåðèîä_ðàñ÷¸òà_÷àñ   = 12 ; // Ïåðèîä ðàñ÷¸òà â ÷àñàõ äëÿ Àçèè.
extern double Europe_ïåðèîä_ðàñ÷¸òà_÷àñ =  9 ; // Ïåðèîä ðàñ÷¸òà â ÷àñàõ äëÿ Åâðîïû.
extern double USA_ïåðèîä_ðàñ÷¸òà_÷àñ    =  6 ; // Ïåðèîä ðàñ÷¸òà â ÷àñàõ äëÿ Àìåðèêè.
//----Íàñòðîéêà âðåìåíè êîíöà ïåðèîäà ðàñ÷¸òà è âðåìåíè íà÷àëà îòðèñîâêè ëèíèè--------------------------------------------------------------------
extern string Start_ASIA          = "00:15" ;  // Âðåìÿ êîíöà ïåðèîäà ðàñ÷¸òà äëÿ Àçèè ïî GMT.
                                               // Âðåìÿ íà÷àëà îòðèñîâêè ëèíèè "PIVOT DJ ASIA" (ó÷èòûâàþòñÿ òîëüêî ÷àñû, ìèíóòû îòáðàñûâàþòñÿ).
extern string Start_EUROPE_Winter = "06:15" ;  // Âðåìÿ êîíöà ïåðèîäà ðàñ÷¸òà äëÿ Åâðîïû ïî GMT.
                                               // Âðåìÿ íà÷àëà îòðèñîâêè ëèíèè "PIVOT DJ EUROPE" (ó÷èòûâàþòñÿ òîëüêî ÷àñû, ìèíóòû îòáðàñûâàþòñÿ).
extern string Start_USA_Winter    = "13:00" ;  // Âðåìÿ êîíöà ïåðèîäà ðàñ÷¸òà äëÿ Àìåðèêè ïî GMT.
                                               // Âðåìÿ íà÷àëà îòðèñîâêè ëèíèè "PIVOT DJ USA" (ó÷èòûâàþòñÿ òîëüêî ÷àñû, ìèíóòû îòáðàñûâàþòñÿ).
//----Íàñòðîéêà îòîáðàæåíèÿ-----------------------------------------------------------------------------------------------------------------------
extern int    Óãîë         =   0   ;    // Ðàñïîëîæåíèå èíäèêàòîðà : 0 = ñâåðõó ñëåâà, 1 = ñâåðõó ñïðàâà, 2 = ñíèçó ñëåâà, 3 = ñíèçó ñïðàâà.
extern int    XD           = 250   ;    // Ñìåùåíèå îò óãëà ïî X.
extern int    YD           =   0   ;    // Ñìåùåíèå îò óãëà ïî Y.
extern bool   TEXT_Visible = true  ;    // true - îòîáðàæàòü òåêñò; false - íå îòîáðàæàòü òåêñò.
extern color  TextColor    = White ;    // Öâåò òåêñòà.


//================================================================================================================================================
double nClose   = 0 ;
double nPivot   = 0 ; 
double nMaxHigh = 0 ; 
double nMinLow  = 0 ;
//---------------------------------------------------------------
static bool   Time_Summer = false;             // true - ëåòíåå âðåìÿ / false - çèìíåå âðåìÿ.
//---------------------------------------------------------------
double    PBuffer[];
//---------------------------------------------------------------
static string ss1 = "Asia DJ Pivot"    ;
static string ss2 = "Europe DJ Pivot"  ;
static string ss3 = "Usa DJ Pivot"     ;
//===============================================================
datetime t;
int init() 
 {
  t=0;
  if ( TEXT_Visible == true )
   {
    ObjectCreate(ss1, OBJ_LABEL, 0, 0, 0);   
    ObjectSet(ss1, OBJPROP_XDISTANCE, XD);
    ObjectSet(ss1, OBJPROP_YDISTANCE, YD);
    ObjectSet(ss1, OBJPROP_CORNER, Óãîë);

    ObjectCreate(ss2, OBJ_LABEL, 0, 0, 0);   
    ObjectSet(ss2, OBJPROP_XDISTANCE, XD);
    ObjectSet(ss2, OBJPROP_YDISTANCE, 10+YD);
    ObjectSet(ss2, OBJPROP_CORNER, Óãîë);

    ObjectCreate(ss3, OBJ_LABEL, 0, 0, 0);   
    ObjectSet(ss3, OBJPROP_XDISTANCE, XD);
    ObjectSet(ss3, OBJPROP_YDISTANCE, 20+YD);
    ObjectSet(ss3, OBJPROP_CORNER, Óãîë);
   }
    SetIndexStyle(0,DRAW_LINE);
    SetIndexBuffer(0,PBuffer);
  return(0); 
 }
//===============================================================
int deinit() 
{ 
if ( TEXT_Visible == true )
 {
  ObjectDelete(ss1);
  ObjectDelete(ss2);
  ObjectDelete(ss3);
 }
return(0); 
} 
//===============================================================
 void funPivot(int pDay, int pMonth, int pYear,  double PeriodHour, double hourMT4, double minuteMT4)
  { 
   datetime dTimeMT4end;
   datetime dTimeMT4begin;
   
   string sTimeMT4 = StringConcatenate(DoubleToStr( pYear, 0),".",DoubleToStr( pMonth , 0),".",DoubleToStr( pDay , 0)," ",
                     DoubleToStr( hourMT4, 0),":",DoubleToStr( minuteMT4, 0) ) ; 
                    
   dTimeMT4end = StrToTime(sTimeMT4); 
   dTimeMT4begin = dTimeMT4end - PeriodHour*3600+60  ;  
   
   if (TimeDayOfWeek (dTimeMT4begin) ==0)
   dTimeMT4begin = dTimeMT4begin - 172800;

//which period to use depends on the history presence.

   int i=PERIOD_M1;
   int j =iBarShift(NULL,i,dTimeMT4begin,true);

   if (j == -1)
    i=PERIOD_M5;
    j=iBarShift(NULL,i,dTimeMT4begin,true);

   if (j == -1)
    i=PERIOD_M15;

   int      shiftend=iBarShift(NULL,i,dTimeMT4end);
   int      shiftbegin=iBarShift(NULL,i,dTimeMT4begin);
      
   nMinLow =iLow(NULL,i,Lowest ( NULL, i, MODE_LOW, shiftbegin-shiftend, shiftend));
   nMaxHigh= iHigh(NULL,i,Highest( NULL, i, MODE_HIGH, shiftbegin-shiftend, shiftend)); 
   nClose=iClose(NULL,i,shiftend);
   nPivot = (nMaxHigh+nMinLow+nClose)/3;
   
   return; 
  } 
//================================================================
int start() 
 {
  if(t==Time[0]) return(0);
  t=Time[0];
    
  int mDay;
  int mMonth ;
  int mYear  ;
  string mYearMonthDay;
//----------------------------------------------------------------
  static double PeriodHour_ ; // = Asia_ïåðèîä_ðàñ÷¸òà_÷àñ;
  static double hourMT4_    ; // = Asia_êîíåö_ïåðèîäà_MT4_÷àñ; 
  static double minuteMT4_  ; // = Asia_êîíåö_ïåðèîäà_MT4_ìèí; 

  static double nPivotEurope; // = nPivot; 
  static double nMaxHighE   ; // = nMaxHigh; 
  static double nMinLowE    ; // = nMinLow; 
  static double nCloseE     ; // = nClose; 

  static double nPivotUSA   ; // = nPivot; 
  static double nMaxHighU   ; // = nMaxHigh; 
  static double nMinLowU    ; // = nMinLow; 
  static double nCloseU     ; // = nClose; 

  static double nPivotASIA  ; // = nPivot; 
  static double nMaxHighA   ; // = nMaxHigh; 
  static double nMinLowA    ; // = nMinLow; 
  static double nCloseA     ; // = nClose; 
//-----------------------------------------------------------------
  datetime  mDatBegin;

// âðåìÿ áåðåòñÿ ñ áàðà äëÿ ïðàâèëüíîé ðàáîòû  â ñîâåòíèêàõ - ïðè òåñòèðîâàííèè TimeCurrent() - èìåëà ïðîáëåìó
  Time_Summer = TimeWinter(iTime(Symbol(),PERIOD_M15,0)); // äîñòàòî÷íûé ÒÔ äëÿ îïðåäåëåíèÿ ëåòà èëè çèìà 

//  if (Bars != IndicatorCounted())
   {
    if (Äíåé == 0 )
     {
      deinit();
      return(0);
     }
  else
     {
      mDatBegin = StrToTime(StringConcatenate(TimeToStr(CurTime(),TIME_DATE)," 00:00")) - ((Äíåé-1) * 86400);
     }
//==================================================================
  for ( ; mDatBegin < CurTime();  mDatBegin += 86400 )
   {
    mYear  = TimeYear( mDatBegin);
    mMonth = TimeMonth( mDatBegin);
    mDay   = TimeDay( mDatBegin);
    mYearMonthDay = StringConcatenate(DoubleToStr (mYear,0) , "." , DoubleToStr (mMonth, 0) , "." , DoubleToStr (mDay , 0));
//----------------------------------------------------------------------------------------------------------------------------------------------------------------
    Start_ASIA=StringTrimRight(StringTrimLeft(Start_ASIA));
    Start_EUROPE_Winter=StringTrimRight(StringTrimLeft(Start_EUROPE_Winter));
    Start_USA_Winter=StringTrimRight(StringTrimLeft(Start_USA_Winter));
    
    if (Time_Summer==true) int TWS =1;
    else TWS=0;
    
    int  Asia_end_MT4_hour           = StrToDouble(StringSubstr(Start_ASIA, 0, 2)) + Âðåìÿ_ÄÖ;
    int  Asia_end_MT4_min            = StrToDouble(StringSubstr(Start_ASIA, 3, 2)) ;
                                    
    int  Europe_end_MT4_hour_pivot   = StrToDouble (StringSubstr(Start_EUROPE_Winter, 0, 2)) + Âðåìÿ_ÄÖ-1+TWS;
    int  Europe_end_MT4_hour_session = StrToDouble (StringSubstr(Start_EUROPE_Winter, 0, 2)) + Âðåìÿ_ÄÖ - TWS;
    int  Europe_end_MT4_min          = StrToDouble (StringSubstr(Start_EUROPE_Winter, 3, 2)) ;
                                    
    int  USA_end_MT4_hour_pivot      = StrToDouble (StringSubstr(Start_USA_Winter, 0, 2)) + Âðåìÿ_ÄÖ - TWS;
    int  USA_end_MT4_hour_session    = StrToDouble (StringSubstr(Start_USA_Winter, 0, 2)) + Âðåìÿ_ÄÖ - TWS;
    int  USA_end_MT4_min             = StrToDouble (StringSubstr(Start_USA_Winter, 3, 2)) ;
//----------------------------------------------------------------------------------------------------------------------------------------------------------------*/
    PeriodHour_  = Asia_ïåðèîä_ðàñ÷¸òà_÷àñ;
    hourMT4_     = Asia_end_MT4_hour;
    minuteMT4_   = Asia_end_MT4_min;
    funPivot( mDay, mMonth ,mYear ,PeriodHour_, hourMT4_, minuteMT4_);
    nPivotASIA   = nPivot;
    nMaxHighA    = nMaxHigh;
    nMinLowA     = nMinLow;
    nCloseA      = nClose;
//----------------------------------------------
    PeriodHour_  = Europe_ïåðèîä_ðàñ÷¸òà_÷àñ;
    hourMT4_     = Europe_end_MT4_hour_pivot;
    minuteMT4_   = Europe_end_MT4_min;
    funPivot(mDay, mMonth,mYear,PeriodHour_, hourMT4_, minuteMT4_);
    nPivotEurope = nPivot;
    nMaxHighE    = nMaxHigh;
    nMinLowE     = nMinLow;
    nCloseE      = nClose;
//----------------------------------------------
    PeriodHour_  = USA_ïåðèîä_ðàñ÷¸òà_÷àñ;
    hourMT4_     = USA_end_MT4_hour_pivot;
    minuteMT4_   = USA_end_MT4_min;
    funPivot(mDay, mMonth,mYear,PeriodHour_, hourMT4_, minuteMT4_);
    nPivotUSA    = nPivot;
    nMaxHighU    = nMaxHigh;
    nMinLowU     = nMinLow;
    nCloseU      = nClose;
//----------------------------------------------
    string DC_ASIA   = StringConcatenate(mYearMonthDay , " " , Asia_end_MT4_hour, ":00");   
    string DC_EUROPE = StringConcatenate(mYearMonthDay , " " , Europe_end_MT4_hour_session, ":00");   
    string DC_USA    = StringConcatenate(mYearMonthDay , " " , USA_end_MT4_hour_session, ":00");   
   
    int pPivotBARA = iBarShift (NULL,0,StrToTime (DC_ASIA)); 
    int pPivotBARE = iBarShift (NULL,0,StrToTime (DC_EUROPE));  
    int pPivotBARU = iBarShift (NULL,0,StrToTime (DC_USA));

      int j;

      if ( nPivotASIA !=0 )
         {
          for (j = 0  ; j < pPivotBARA; j++)
            PBuffer[j] = nPivotASIA ;
         }  
      if ( nPivotEurope !=0)
         {
          for (j = 0  ; j < pPivotBARE; j++)
            PBuffer[j] = nPivotEurope ;
         }

      if (nPivotUSA !=0 )
         {
          for (j = 0 ; j < pPivotBARU; j++)
            PBuffer[j] = nPivotUSA ;
         }
    }

   if (TEXT_Visible == true )
    {
     string sPivotASIA    =  StringConcatenate("PivotAsia     =",DoubleToStr(nPivotASIA  ,Digits)," High="+DoubleToStr(nMaxHighA,Digits)," Low=",DoubleToStr(nMinLowA,Digits)," Close=",DoubleToStr(nCloseA,Digits)) ; 
     string sPivotEUROPE  =  StringConcatenate("PivotEurope="   ,DoubleToStr(nPivotEurope,Digits)," High="+DoubleToStr(nMaxHighE,Digits)," Low=",DoubleToStr(nMinLowE,Digits)," Close=",DoubleToStr(nCloseE,Digits)) ;
     string sPivotUSA     =  StringConcatenate("PivotUSA    ="  ,DoubleToStr(nPivotUSA   ,Digits)," High="+DoubleToStr(nMaxHighU,Digits)," Low=",DoubleToStr(nMinLowU,Digits)," Close="+DoubleToStr(nCloseU,Digits)) ; 

     ObjectSetText(ss1, sPivotASIA   , 8, "Arial", TextColor); 
     ObjectSetText(ss2, sPivotEUROPE , 8, "Arial", TextColor); 
     ObjectSetText(ss3, sPivotUSA    , 8, "Arial", TextColor); 
    }
 }
return(0);
}


////////////////////////////////////////////////////////////// 
//
// YURAZ yzh mail ru
//
// ôóíêöèÿ âåðíåò 
// true   -  ëåòíåå âðåìÿ
// false  -  çèìíåå âðåìÿ
// 
//  ïåðåõîä íà çèìíåå â íî÷ü  ïîñëåäíåãî âîñêðåñåíüÿ ÎÊÒßÁÐß
//  ïåðåõîä íà ëåòíåå â íî÷ü  ïîñëåäíåãî âîñêðåñåíüÿ ÌÀÐÒÀ
// 
bool TimeWinter(datetime dt) 
{
   int i;

   if (   TimeMonth(dt) >= 11 || TimeMonth(dt) <= 2 ) // ÇÈÌÀ
   {
      return(false); //    ìãíîâåííî âåðíåì çèìíåå
   }
   if (   TimeMonth(dt) >= 4 && TimeMonth(dt) <= 9) // ËÅÒÎ
   {
      return(true); //    ìãíîâåííî âåðíåì  Ëåòî
   }

// äåëàòü íå÷åãî èäåì îïðåäåëÿòü 
   datetime tSeek;
   string sTIM;
   if ( TimeMonth(dt) == 10 ) // îêòÿáðü
   {
      if ( TimeDay(dt) >= 20 ) // íî÷üþ â ïîñëåäåå âîñêðåñåíüå îêòÿáðÿ - ïåðåõîä íà çèìíåå âðåìÿ
      {
         tSeek = StrToTime( StringTrimRight(StringTrimLeft(DoubleToStr(TimeYear(dt),0)))+".10.31");  // óñòàíîâèì ïîñëåäíèé äåíü îêòÿáðÿ
         // èùåì ïåðâîå âîñêðåñåíüå ñ êîíöà
         for ( i = 31; i >= 20; i-- )
         {
            if ( TimeDayOfWeek(tSeek) == 0 ) 
            {
               break;   // íàøëè ïîñëåäíåå âîñêðåñåíüíå îêòÿáðÿ
            }
            tSeek = tSeek - 86400; // åùå îäèí äåíü
         }
         if ( dt >= tSeek  ) // óæå çèìíåå âðåìÿ
         {
            return(false); // äà çèìà
         }
      }
      return(true);
   }
   if ( TimeMonth(dt) == 3 ) // ìàðò
   {
      if ( TimeDay(dt) >= 20 ) // íî÷üþ â ïîñëåäåå âîñêðåñåíüå ÌÀÐÒÀ - ïåðåõîä íà ËÅÒÍÅÅ âðåìÿ
      {
         tSeek = StrToTime( StringTrimRight(StringTrimLeft(DoubleToStr(TimeYear(dt),0)))+".03.31");  // óñòàíîâèì ïîñëåäíèé äåíü ìàðòà
        
         for ( i = 31; i >= 20; i-- )
         {
            if ( TimeDayOfWeek(tSeek) == 0 ) // èùåì ïåðâîå âîñêðåñåíüå ñ êîíöà
            {
               break; // íàøëè ïîñëåäíåå âîñêðåñåíüíå ìàðòà
            }
            tSeek = tSeek - 86400; // åùå îäèí äåíü
         }
         if ( dt >= tSeek  ) // óæå ëåòíåå âðåìÿ
         {
            return(true); //  óæå ëåòî 
         }
      }
      return(false);
   }
}

//+------------------------------------------------------------------+