public bool IsIsraeliDaylightSavingsTime(CalendarDate date, CalendarEngine engine)
{
// Get Jewish year of Yom Kippur in the passed Gregorian year
int a = engine.absoluteFromGregorianDate(new CalendarDate(31, 12, date.Year));
CalendarDate jewishCurrent = engine.jewishDateFromAbsolute(a);
// Get Last Friday before 2nd of April
int dstBegin = engine.absoluteFromGregorianDate(new CalendarDate(2, 4, date.Year)); // 2 April
dstBegin--; // get the day before 2nd of April
while (engine.GetWeekday(dstBegin) != 5) // gets the weekday, 5 = Friday
{
dstBegin--; // counts to the previous day until Friday
}
// Get Sunday between Rosh Hashana and Yom Kippur
// Take the first Sunday on or after 3rd of Tishri
int dstEnd = engine.absoluteFromJewishDate(new CalendarDate(3, 7, jewishCurrent.Year));
while (engine.GetWeekday(dstEnd) != 0) // gets the weekday, 0 = Sunday
{
dstEnd++; // counts to the next day until Sunday
}
// Check if the current date is between the start and end date ...
int currentDate = engine.absoluteFromGregorianDate(date);
if (currentDate >= dstBegin && currentDate < dstEnd)
{
return(true);
}
else
{
return(false);
}
}
public List <String> GetHolidayForDate(CalendarDate gdate, CalendarEngine engine, bool diaspora)
{
int absDate = engine.absoluteFromGregorianDate(gdate);
CalendarDate jewishDate = engine.jewishDateFromAbsolute(absDate);
int hebDay = jewishDate.Day;
int hebMonth = jewishDate.Month;
int hebYear = jewishDate.Year;
List <String> listHolidays = new List <String>();
// Holidays in Nisan
int hagadolDay = 14;
while (GetWeekdayOfHebrewDate(hagadolDay, 1, hebYear, engine) != 6)
{
hagadolDay -= 1;
}
if (hebDay == hagadolDay && hebMonth == 1)
{
listHolidays.Add("Shabat Hagadol");
}
if (hebDay == 14 && hebMonth == 1)
{
listHolidays.Add("Erev Pesach");
}
if (hebDay == 15 && hebMonth == 1)
{
listHolidays.Add("Pesach I");
}
if (hebDay == 16 && hebMonth == 1)
{
if (diaspora)
{
listHolidays.Add("Pesach II");
}
else
{
listHolidays.Add("Chol Hamoed");
}
}
if (hebDay == 17 && hebMonth == 1)
{
listHolidays.Add("Chol Hamoed");
}
if (hebDay == 18 && hebMonth == 1)
{
listHolidays.Add("Chol Hamoed");
}
if (hebDay == 19 && hebMonth == 1)
{
listHolidays.Add("Chol Hamoed");
}
if (hebDay == 20 && hebMonth == 1)
{
listHolidays.Add("Chol Hamoed");
}
if (hebDay == 21 && hebMonth == 1)
{
if (!diaspora)
{
listHolidays.Add("Pesach VII (Yizkor)");
}
else
{
listHolidays.Add("Pesach VII");
}
}
if (hebDay == 22 && hebMonth == 1)
{
if (diaspora)
{
listHolidays.Add("Pesach VIII (Yizkor)");
}
}
// Yom Hashoah
if (GetWeekdayOfHebrewDate(27, 1, hebYear, engine) == 5)
{
if (hebDay == 26 && hebMonth == 1)
{
listHolidays.Add("Yom Hashoah");
}
}
else if (hebYear >= 5757 && GetWeekdayOfHebrewDate(27, 1, hebYear, engine) == 0)
{
if (hebDay == 28 && hebMonth == 1)
{
listHolidays.Add("Yom Hashoah");
}
}
else
{
if (hebDay == 27 && hebMonth == 1)
{
listHolidays.Add("Yom Hashoah");
}
}
// Holidays in Iyar
// Yom Hazikaron
if (GetWeekdayOfHebrewDate(4, 2, hebYear, engine) == 5)
{ // If 4th of Iyar is a Thursday ...
if (hebDay == 2 && hebMonth == 2) // ... then Yom Hazicaron is on 2th of Iyar
{
listHolidays.Add("Yom Hazikaron");
}
}
else if (GetWeekdayOfHebrewDate(4, 2, hebYear, engine) == 4)
{
if (hebDay == 3 && hebMonth == 2)
{
listHolidays.Add("Yom Hazikaron");
}
}
else if (hebYear >= 5764 && GetWeekdayOfHebrewDate(4, 2, hebYear, engine) == 0)
{
if (hebDay == 5 && hebMonth == 2)
{
listHolidays.Add("Yom Hazikaron");
}
}
else
{
if (hebDay == 4 && hebMonth == 2)
{
listHolidays.Add("Yom Hazikaron");
}
}
// Yom Ha'Azmaut
if (GetWeekdayOfHebrewDate(5, 2, hebYear, engine) == 6)
{
if (hebDay == 3 && hebMonth == 2)
{
listHolidays.Add("Yom Ha'Atzmaut");
}
}
else if (GetWeekdayOfHebrewDate(5, 2, hebYear, engine) == 5)
{
if (hebDay == 4 && hebMonth == 2)
{
listHolidays.Add("Yom Ha'Atzmaut");
}
}
else if (hebYear >= 5764 && GetWeekdayOfHebrewDate(4, 2, hebYear, engine) == 0)
{
if (hebDay == 6 && hebMonth == 2)
{
listHolidays.Add("Yom Ha'Atzmaut");
}
}
else
{
if (hebDay == 5 && hebMonth == 2)
{
listHolidays.Add("Yom Ha'Atzmaut");
}
}
if (hebDay == 14 && hebMonth == 2)
{
listHolidays.Add("Pesach Sheni");
}
if (hebDay == 18 && hebMonth == 2)
{
listHolidays.Add("Lag BaOmer");
}
if (hebDay == 28 && hebMonth == 2)
{
listHolidays.Add("Yom Yerushalayim");
}
// Holidays in Sivan
if (hebDay == 5 && hebMonth == 3)
{
listHolidays.Add("Erev Shavuot");
}
if (hebDay == 6 && hebMonth == 3)
{
if (diaspora)
{
listHolidays.Add("Shavuot I");
}
else
{
listHolidays.Add("Shavuot (Yizkor)");
}
}
if (hebDay == 7 && hebMonth == 3)
{
if (diaspora)
{
listHolidays.Add("Shavuot II (Yizkor)");
}
}
// Holidays in Tammuz
if (GetWeekdayOfHebrewDate(17, 4, hebYear, engine) == 6)
{
if (hebDay == 18 && hebMonth == 4)
{
listHolidays.Add("Fast of Tammuz");
}
}
else
{
if (hebDay == 17 && hebMonth == 4)
{
listHolidays.Add("Fast of Tammuz");
}
}
// Holidays in Av
if (GetWeekdayOfHebrewDate(9, 5, hebYear, engine) == 6)
{
if (hebDay == 10 && hebMonth == 5)
{
listHolidays.Add("Fast of Av");
}
}
else
{
if (hebDay == 9 && hebMonth == 5)
{
listHolidays.Add("Fast of Av");
}
}
if (hebDay == 15 && hebMonth == 5)
{
listHolidays.Add("Tu B'Av");
}
// Holidays in Elul
if (hebDay == 29 && hebMonth == 6)
{
listHolidays.Add("Erev Rosh Hashana");
}
// Holidays in Tishri
if (hebDay == 1 && hebMonth == 7)
{
listHolidays.Add("Rosh Hashana I");
}
if (hebDay == 2 && hebMonth == 7)
{
listHolidays.Add("Rosh Hashana II");
}
if (GetWeekdayOfHebrewDate(3, 7, hebYear, engine) == 6)
{
if (hebDay == 4 && hebMonth == 7)
{
listHolidays.Add("Tzom Gedaliah");
}
}
else
{
if (hebDay == 3 && hebMonth == 7)
{
listHolidays.Add("Tzom Gedaliah");
}
}
if (hebDay == 9 && hebMonth == 7)
{
listHolidays.Add("Erev Yom Kippur");
}
if (hebDay == 10 && hebMonth == 7)
{
listHolidays.Add("Yom Kippur (Yizkor)");
}
if (hebDay == 14 && hebMonth == 7)
{
listHolidays.Add("Erev Sukkot");
}
if (hebDay == 15 && hebMonth == 7)
{
if (diaspora)
{
listHolidays.Add("Sukkot I");
}
else
{
listHolidays.Add("Sukkot");
}
}
if (hebDay == 16 && hebMonth == 7)
{
if (diaspora)
{
listHolidays.Add("Sukkot II");
}
else
{
listHolidays.Add("Chol Hamoed");
}
}
if (hebDay == 17 && hebMonth == 7)
{
listHolidays.Add("Chol Hamoed");
}
if (hebDay == 18 && hebMonth == 7)
{
listHolidays.Add("Chol Hamoed");
}
if (hebDay == 19 && hebMonth == 7)
{
listHolidays.Add("Chol Hamoed");
}
if (hebDay == 20 && hebMonth == 7)
{
listHolidays.Add("Chol Hamoed");
}
if (hebDay == 21 && hebMonth == 7)
{
listHolidays.Add("Hoshana Raba");
}
if (hebDay == 22 && hebMonth == 7)
{
if (!diaspora)
{
listHolidays.Add("Shemini Atzereth (Yizkor)");
listHolidays.Add("Simchat Torah");
}
else
{
listHolidays.Add("Shemini Atzereth (Yizkor)");
}
}
if (hebDay == 23 && hebMonth == 7)
{
if (diaspora)
{
listHolidays.Add("Simchat Torah");
}
}
// Holidays in Kislev
if (hebDay == 25 && hebMonth == 9)
{
listHolidays.Add("Chanukka I");
}
if (hebDay == 26 && hebMonth == 9)
{
listHolidays.Add("Chanukka II");
}
if (hebDay == 27 && hebMonth == 9)
{
listHolidays.Add("Chanukka III");
}
if (hebDay == 28 && hebMonth == 9)
{
listHolidays.Add("Chanukka IV");
}
if (hebDay == 29 && hebMonth == 9)
{
listHolidays.Add("Chanukka V");
}
// Holidays in Tevet
if (hebDay == 10 && hebMonth == 10)
{
listHolidays.Add("Fast of Tevet");
}
if (engine.getLastDayOfJewishMonth(9, hebYear) == 30)
{
if (hebDay == 30 && hebMonth == 9)
{
listHolidays.Add("Chanukka VI");
}
if (hebDay == 1 && hebMonth == 10)
{
listHolidays.Add("Chanukka VII");
}
if (hebDay == 2 && hebMonth == 10)
{
listHolidays.Add("Chanukka VIII");
}
}
if (engine.getLastDayOfJewishMonth(9, hebYear) == 29)
{
if (hebDay == 1 && hebMonth == 10)
{
listHolidays.Add("Chanukka VI");
}
if (hebDay == 2 && hebMonth == 10)
{
listHolidays.Add("Chanukka VII");
}
if (hebDay == 3 && hebMonth == 10)
{
listHolidays.Add("Chanukka VIII");
}
}
// Holidays in Shevat
if (hebDay == 15 && hebMonth == 11)
{
listHolidays.Add("Tu B'Shevat");
}
// Holidays in Adar (I)/Adar II
int monthEsther;
if (engine.IsHebrewLeapYear(hebYear))
{
monthEsther = 13;
}
else
{
monthEsther = 12;
}
if (GetWeekdayOfHebrewDate(13, monthEsther, hebYear, engine) == 6)
{
if (hebDay == 11 && hebMonth == monthEsther)
{
listHolidays.Add("Fast of Esther");
}
}
else
{
if (hebDay == 13 && hebMonth == monthEsther)
{
listHolidays.Add("Fast of Esther");
}
}
if (hebDay == 14 && hebMonth == monthEsther)
{
listHolidays.Add("Purim");
}
if (hebDay == 15 && hebMonth == monthEsther)
{
listHolidays.Add("Shushan Purim");
}
if (engine.IsHebrewLeapYear(hebYear))
{
if (hebDay == 14 && hebMonth == 12)
{
listHolidays.Add("Purim Katan");
}
if (hebDay == 15 && hebMonth == 12)
{
listHolidays.Add("Shushan Purim Katan");
}
}
return(listHolidays);
}
public int GetWeekdayOfHebrewDate(int hebDay, int hebMonth, int hebYear, CalendarEngine engine)
{
int absDate = engine.absoluteFromJewishDate(new CalendarDate(hebDay, hebMonth, hebYear));
return(absDate % 7);
}