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Sunday, May 26, 2024

Cyprus DST shifts from 2000 till 2028 – Other – 29 June 2023

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If your broker is in Cyprus 

If your brokers server time is in Cyprus’s Time Zone

You can use the following structures to turn historical bar times or historical ticks to gmt time 

#property copyright "Source"
#property link      "https://www.mql5.com/en/blogs/post/753335"
#property version   "1.00"



#define TSHIFT_BACK_TO_BASE_TIME -1
#define TSHIFT_DAYLIGHT_SAVINGS_TIME 1

int TimeYear(datetime _time){MqlDateTime mqt;TimeToStruct(_time,mqt);return(mqt.year);}

class time_shift_moment{
         public:
datetime happens_at;
     int shift_in_hours;
         time_shift_moment(void){reset();}
        ~time_shift_moment(void){reset();}
    void reset(){
         happens_at=0;
         shift_in_hours=0;
         }
    void set(datetime _at,int _shift){
         happens_at=_at;
         shift_in_hours=_shift;
         }
};
class time_shift_log{
                  public:
time_shift_moment shifts[];
              int base_gmt_offset,dst_gmt_offset;
                  time_shift_log(void){reset();}
                 ~time_shift_log(void){reset();}
             void reset(){
                  base_gmt_offset=0;
                  dst_gmt_offset=0;
                  ArrayFree(shifts);
                  }
             void setup(int base_offset_in_hours_from_gmt,int dst_offset_in_hours_from_gmt){
                  base_gmt_offset=base_offset_in_hours_from_gmt;
                  dst_gmt_offset=dst_offset_in_hours_from_gmt;
                  }
             void add(datetime _time,int _shift){
                  int ns=ArraySize(shifts)+1;
                  ArrayResize(shifts,ns,0);
                  shifts[ns-1].set(_time,_shift);
                  }
             bool turn_time_to_gmt(datetime _time,datetime &_result){
                  int hours_offset=0;
                  if(find_time_offset(_time,hours_offset)){
                    hours_offset*=60*60;
                    _result=(datetime)((int)_time-hours_offset);
                    return(true);
                    }
                  return(false);
                  }
             bool turn_time_to_gmt(long _time_ms,long &_result_ms){
                  datetime totime=(datetime)(_time_ms/1000);
                  if(turn_time_to_gmt(totime,totime)){
                    _result_ms=((long)totime*1000);
                    return(true);
                    }
                  return(false);
                  }
             bool find_time_offset(datetime of_this_date,int &result_hours){
                  
                    int search=find_shift_date_before(of_this_date);
                    if(search!=-1){
                    
                      if(shifts[search].shift_in_hours==TSHIFT_BACK_TO_BASE_TIME){
                        result_hours=base_gmt_offset;
                        return(true);
                        }
                      else{
                        result_hours=dst_gmt_offset;
                        return(true);
                        }
                    }
                  return(false);
                  }
              int find_shift_date_before(datetime before_this){
                  
                    for(int i=ArraySize(shifts)-1;i>=0;i--){
                       
                         if(shifts[i].happens_at<=before_this){
                           if(TimeYear(shifts[i].happens_at)==TimeYear(before_this)){
                             return(i);
                             }
                           }
                       }
                  return(-1);
                  }
};

time_shift_log CyprusDST;

void prepare_Cyprus(time_shift_log &shift_log){
shift_log.reset();

shift_log.setup(2,3);

shift_log.add(D'2000.03.26 03:00',TSHIFT_DAYLIGHT_SAVINGS_TIME);
shift_log.add(D'2000.10.29 04:00',TSHIFT_BACK_TO_BASE_TIME);

shift_log.add(D'2001.03.25 03:00',TSHIFT_DAYLIGHT_SAVINGS_TIME);
shift_log.add(D'2001.10.28 04:00',TSHIFT_BACK_TO_BASE_TIME);

shift_log.add(D'2002.03.31 03:00',TSHIFT_DAYLIGHT_SAVINGS_TIME);
shift_log.add(D'2002.10.27 04:00',TSHIFT_BACK_TO_BASE_TIME);

shift_log.add(D'2003.03.30 03:00',TSHIFT_DAYLIGHT_SAVINGS_TIME);
shift_log.add(D'2003.10.26 04:00',TSHIFT_BACK_TO_BASE_TIME);

shift_log.add(D'2004.03.28 03:00',TSHIFT_DAYLIGHT_SAVINGS_TIME);
shift_log.add(D'2004.10.31 04:00',TSHIFT_BACK_TO_BASE_TIME);

shift_log.add(D'2005.03.27 03:00',TSHIFT_DAYLIGHT_SAVINGS_TIME);
shift_log.add(D'2005.10.30 04:00',TSHIFT_BACK_TO_BASE_TIME);

shift_log.add(D'2006.03.26 03:00',TSHIFT_DAYLIGHT_SAVINGS_TIME);
shift_log.add(D'2006.10.29 04:00',TSHIFT_BACK_TO_BASE_TIME);

shift_log.add(D'2007.03.25 03:00',TSHIFT_DAYLIGHT_SAVINGS_TIME);
shift_log.add(D'2007.10.28 04:00',TSHIFT_BACK_TO_BASE_TIME);

shift_log.add(D'2008.03.30 03:00',TSHIFT_DAYLIGHT_SAVINGS_TIME);
shift_log.add(D'2008.10.26 04:00',TSHIFT_BACK_TO_BASE_TIME);

shift_log.add(D'2009.03.29 03:00',TSHIFT_DAYLIGHT_SAVINGS_TIME);
shift_log.add(D'2009.10.25 04:00',TSHIFT_BACK_TO_BASE_TIME);

shift_log.add(D'2010.03.28 03:00',TSHIFT_DAYLIGHT_SAVINGS_TIME);
shift_log.add(D'2010.10.31 04:00',TSHIFT_BACK_TO_BASE_TIME);

shift_log.add(D'2011.03.27 03:00',TSHIFT_DAYLIGHT_SAVINGS_TIME);
shift_log.add(D'2011.10.30 04:00',TSHIFT_BACK_TO_BASE_TIME);

shift_log.add(D'2012.03.25 03:00',TSHIFT_DAYLIGHT_SAVINGS_TIME);
shift_log.add(D'2012.10.28 04:00',TSHIFT_BACK_TO_BASE_TIME);

shift_log.add(D'2013.03.31 03:00',TSHIFT_DAYLIGHT_SAVINGS_TIME);
shift_log.add(D'2013.10.27 04:00',TSHIFT_BACK_TO_BASE_TIME);

shift_log.add(D'2014.03.30 03:00',TSHIFT_DAYLIGHT_SAVINGS_TIME);
shift_log.add(D'2014.10.26 04:00',TSHIFT_BACK_TO_BASE_TIME);

shift_log.add(D'2015.03.29 03:00',TSHIFT_DAYLIGHT_SAVINGS_TIME);
shift_log.add(D'2015.10.25 04:00',TSHIFT_BACK_TO_BASE_TIME);

shift_log.add(D'2016.03.27 03:00',TSHIFT_DAYLIGHT_SAVINGS_TIME);
shift_log.add(D'2016.10.30 04:00',TSHIFT_BACK_TO_BASE_TIME);

shift_log.add(D'2017.03.26 03:00',TSHIFT_DAYLIGHT_SAVINGS_TIME);
shift_log.add(D'2017.10.29 04:00',TSHIFT_BACK_TO_BASE_TIME);

shift_log.add(D'2018.03.25 03:00',TSHIFT_DAYLIGHT_SAVINGS_TIME);
shift_log.add(D'2018.10.28 04:00',TSHIFT_BACK_TO_BASE_TIME);

shift_log.add(D'2019.03.31 03:00',TSHIFT_DAYLIGHT_SAVINGS_TIME);
shift_log.add(D'2019.10.27 04:00',TSHIFT_BACK_TO_BASE_TIME);

shift_log.add(D'2020.03.29 03:00',TSHIFT_DAYLIGHT_SAVINGS_TIME);
shift_log.add(D'2020.10.25 04:00',TSHIFT_BACK_TO_BASE_TIME);

shift_log.add(D'2021.03.28 03:00',TSHIFT_DAYLIGHT_SAVINGS_TIME);
shift_log.add(D'2021.10.31 04:00',TSHIFT_BACK_TO_BASE_TIME);

shift_log.add(D'2022.03.27 03:00',TSHIFT_DAYLIGHT_SAVINGS_TIME);
shift_log.add(D'2022.10.30 04:00',TSHIFT_BACK_TO_BASE_TIME);

shift_log.add(D'2023.03.26 03:00',TSHIFT_DAYLIGHT_SAVINGS_TIME);
shift_log.add(D'2023.10.29 04:00',TSHIFT_BACK_TO_BASE_TIME);

shift_log.add(D'2024.03.31 03:00',TSHIFT_DAYLIGHT_SAVINGS_TIME);
shift_log.add(D'2024.10.27 04:00',TSHIFT_BACK_TO_BASE_TIME);

shift_log.add(D'2025.03.30 03:00',TSHIFT_DAYLIGHT_SAVINGS_TIME);
shift_log.add(D'2025.10.26 04:00',TSHIFT_BACK_TO_BASE_TIME);

shift_log.add(D'2026.03.29 03:00',TSHIFT_DAYLIGHT_SAVINGS_TIME);
shift_log.add(D'2026.10.25 04:00',TSHIFT_BACK_TO_BASE_TIME);

shift_log.add(D'2027.03.28 03:00',TSHIFT_DAYLIGHT_SAVINGS_TIME);
shift_log.add(D'2027.10.31 04:00',TSHIFT_BACK_TO_BASE_TIME);

shift_log.add(D'2028.03.26 03:00',TSHIFT_DAYLIGHT_SAVINGS_TIME);
shift_log.add(D'2028.10.29 04:00',TSHIFT_BACK_TO_BASE_TIME);
}

int OnInit()
  {

  
  prepare_Cyprus(CyprusDST);
  
    datetime past=iTime(_Symbol,_Period,10);
             past=D'01.11.2001 00:00';
    datetime past_to_gmt=0;
    if(CyprusDST.turn_time_to_gmt(past,past_to_gmt)){
      Print(TimeToString(past,TIME_DATE|TIME_MINUTES|TIME_SECONDS)+" -> "+TimeToString(past_to_gmt,TIME_DATE|TIME_MINUTES|TIME_SECONDS));
      }else{
      Print("Error");
      }
    
      

   return(INIT_SUCCEEDED);
  }



void OnDeinit(const int reason)
  {

  CyprusDST.reset(); 
  }



void OnTick()
  {

   
  }


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