Title: Create all Country Holydays between 1582-2199
Question: You will have a programm to compute all the German Holidays.
For all other Countries (e.g. USA ...) you must
1. remove unwanted Holiday-Entries
2. insert your Holiday-Entries
3. change the names in the days-array
4. change the Holiday-Formulas in the Calendar() procedure to your
Country Holidays
Answer:
place this objects on Form1
a Listbox1
a Edit1 with event Edit1KeyPress
a Edit2
private
Heute: TDateTime;
Jahr, Monat, Tag: Word;
work: string;
end;
// define the short names of the weekdays
const
days: array[1..7] of string =
('So', 'Mo', 'Di', 'Mi', 'Do', 'Fr', 'Sa');
// compute the current year and place it into the Edit1 field
procedure TForm1.FormShow(Sender: TObject);
begin
// set the Local Date Format
// if you change it to a another format
// then also change the copy substrings in SK()
ShortDateFormat := 'dd/mm/yyyy';
TwoDigitYearCenturyWindow := 50;
Heute := Now;
DecodeDate(Heute, Jahr, Monat, Tag);
Edit1.Text := IntToStr(Jahr);
end;
// subroutine to put an formatted Holiday-entry in the Listbox1
procedure TForm1.SK(xDate, Title: string);
var
work: string;
begin
work := copy(xDate, 4, 2) + ' ' + copy(xDate, 1, 2);
Listbox1.Items.add(Work + ' ' + days[DayOfWeek(StrToDate(xDate))] + ' ' + Title);
end;
// here we create the holidays for a complete year
procedure TForm1.Calendar(cYear: string; dEaster: TDateTime);
var
I, Year: Integer;
KDate: TDateTime;
cEaster: string;
begin
cEaster := DateToStr(dEaster);
Year := StrToInt(cYear);
Listbox1.clear;
// First we put out the New Years Day
SK('01.01.' + cYear, 'F Neujahr');
// Then we put out all Holidays dependent from Easter
SK(DateToStr(dEaster - 48), 'G Rosenmontag');
SK(DateToStr(dEaster - 47), 'G Fastnacht');
SK(DateToStr(dEaster - 7), 'F Palmsonntag');
SK(DateToStr(dEaster - 3), 'G Grndonnerstag');
SK(DateToStr(dEaster - 2), 'F Karfreitag');
SK(DateToStr(dEaster), 'F Ostersonntag');
SK(DateToStr(dEaster + 1), 'F Ostermontag');
SK(DateToStr(dEaster + 7), 'F Weisser Sonntag');
SK(DateToStr(dEaster + 39), 'F Christi Himmelfahrt');
SK(DateToStr(dEaster + 49), 'F Pfingssonntag');
SK(DateToStr(dEaster + 50), 'F Pfingstmontag');
SK(DateToStr(dEaster + 49 + 7), 'G Dreieinigkeitsfest');
SK(DateToStr(dEaster + 60), 'B Fronleichnam (BW,BY,HE,NW,RP,SL)');
// here we have all fixed Holidays
SK('01.05.' + cYear, 'F Maifeiertag');
SK('31.10.' + cYear, 'B Reformationstag (BB,MV,ST,TH)');
SK('01.11.' + cYear, 'B Allerheiligen (BW,BY,NW,RP,ST,TH)');
SK('11.11.' + cYear, 'G Martinstag');
SK('31.12.' + cYear, 'G Sylvester');
SK('14.02.' + cYear, 'G Valentinstag');
SK('06.01.' + cYear, 'B Heilige Drei Knige (BW,BY,ST)');
SK('15.08.' + cYear, 'B Mari Himmelfahrt (BY,SL,SN)');
// this is the formula for Mothers Day - second Sunday in May
if (Year = 1923) then begin
KDate := StrToDate('01.05.' + cYear);
SK(DateToStr(KDate + 15 - DayOfWeek(KDate)), 'G Muttertag');
end;
// this is the German National Day
if (Year = 1961) and (Year SK('17.06.' + cYear, 'F Tag der deutschen Einheit');
if (Year = 1989) then
SK('03.10.' + cYear, 'F Tag der deutschen Einheit');
// here are the three XMas Days
KDate := StrToDate('25.12.' + cYear);
SK(DateToStr(KDate - 1), 'F Heilig Abend');
SK(DateToStr(KDate), 'F 1.Weihnachtstag');
SK(DateToStr(KDate + 1), 'F 2.Weihnachtstag');
// the ecclesiastical year starts with the first Advent Sunday
// here we compute the four Advent Sundays
I := DayOfWeek(KDate);
if (I 1)
then dec(I)
else I := 7;
KDate := KDate - I - 21;
SK(DateToStr(KDate), 'G 1.Advent');
SK(DateToStr(KDate + 7), 'G 2.Advent');
SK(DateToStr(KDate + 14), 'G 3.Advent');
SK(DateToStr(KDate + 21), 'G 4.Advent');
// The German 'Totensonntag' is the last Sunday in the
// ecclesiastical year
if (Year = 1816) then
SK(DateToStr(KDate - 7), 'G Totensonntag');
// The German 'Bu- und Bettag' is on Wednesday 11 weeks
// before the german 'Totensonntag'
if (Year = 1673) and (Year SK(DateToStr(KDate - 11), 'F Bu- und Bettag');
// the German 'Volkstrauertag' ist the second last
// Sunday in the ecclesiastical year
SK(DateToStr(KDate - 14), 'G Volkstrauertag');
// The German Thanksgiving Day is the 39. Sunday in the Year
SK(DateToStr(9 - DayOfWeek(StrToDate('01.01.' + cYear)) + 39 * 7), 'G Erntedankfest');
end;
// Compute Easter Date
function TForm1.EasterSunday(Year: Integer; var EasterDate: TDateTime): boolean;
{
compute Easter Sunday from 1582 to 2199 with formula from Gauss
Year compute Easter Sunday for this Year
Return False Year incorrect
Return True the variable EasterDate has the computed Oster Sunday
}
const aYears: array[1..5, 1..3] of integer =
((2099, 24, 6), (1899, 24, 5), (1799, 23, 4), (1699, 23, 3), (1581, 22, 2));
var
xDay, Month, I: Integer;
a, b, c, d, e: Word;
begin
// here we check the correct year
if ((Year 2199)) then begin
result := False;
exit;
end;
// and now we get the Month and Day correction values
for I := 1 to 5 do begin
if (Year aYears[I, 1]) then
break;
end;
// now we compute the Easter Sunday
a := Year mod 19;
b := Year mod 4;
c := Year mod 7;
d := (19 * a + aYears[I, 2]) mod 30;
e := (2 * b + 4 * c + 6 * d + aYears[I, 3]) mod 7;
if (d + e 9) then begin
xDay := d + e - 9;
Month := 4;
if (xDay = 26) then xDay := 19;
end
else begin
xDay := d + e + 22;
Month := 3;
end;
EasterDate := EncodeDate(Year, Month, xDay);
result := True;
end;
// with the input of a Year starts the computing
// for Easter-Date and all Holidays
procedure TForm1.Edit1KeyPress(Sender: TObject; var Key: Char);
var
EDate: TDateTime;
begin
if key = #13 then begin
if not (isInteger(Edit1.Text)) then
Edit2.Text := 'ungltige Eingabe'
else begin
if (EasterSunday(StrToInt(Edit1.Text), EDate)) then begin
Edit3.Text := 'Feiertage_' + Edit1.Text + '.txt';
Edit2.Text := DateToStr(EDate);
Calendar(Edit1.Text, EDate);
end
else
Edit2.Text := 'incorrect Year';
end;
end;
end;
// Check input of numeric
function TForm1.isInteger(value: string): Boolean;
begin
result := True;
try
StrToInt(value);
except
result := False;
end;
end;
{
Die Feiertagsberechnung fr 2002 ergibt dann folgende Daten:
Mt Tg Jahr Wt T Feiertag/Gedenktag
-- -- ---- -- - -------------------------------
01.01.2002 Di F Neujahr
06.01.2002 So B Heilige Drei Knige (BW,BY,ST)
11.02.2002 Mo G Rosenmontag
12.02.2002 Di G Fastnacht
14.02.2002 Do G Valentinstag
24.03.2002 So F Palmsonntag
28.03.2002 Do G Grndonnerstag
29.03.2002 Fr F Karfreitag
31.03.2002 So F Ostersonntag
01.04.2002 Mo F Ostermontag
07.04.2002 So F Weisser Sonntag
01.05.2002 Mi F Maifeiertag
09.05.2002 Do F Christi Himmelfahrt
12.05.2002 So G Muttertag
19.05.2002 So F Pfingssonntag
20.05.2002 Mo F Pfingstmontag
26.05.2002 So G Dreieinigkeitsfest
30.05.2002 Do B Fronleichnam (BW,BY,HE,NW,RP,SL)
15.08.2002 Do B Mari Himmelfahrt (BY,SL,SN)
03.10.2002 Do F Tag der deutschen Einheit
05.10.2002 Fr G Erntedankfest
31.10.2002 Do B Reformationstag (BB,MV,ST,TH)
01.11.2002 Fr B Allerheiligen (BW,BY,NW,RP,ST,TH)
11.11.2002 Mo G Martinstag
17.11.2002 So G Volkstrauertag
24.11.2002 So G Totensonntag
01.12.2002 So G 1.Advent
08.12.2002 So G 2.Advent
15.12.2002 So G 3.Advent
22.12.2002 So G 4.Advent
24.12.2002 Di F Heilig Abend
25.12.2002 Mi F 1.Weihnachtstag
26.12.2002 Do F 2.Weihnachtstag
31.12.2002 Di G Sylvester
}
end.
Regards
Kurt