private static void AddTevesSpecialDays(ArrayList list, int jYear, int jDay)
{
if (JewishDateCalculations.IsShortKislev(jYear))
{
if (jDay == 1)
{
list.Add(new SpecialDay("Chanuka - Six Candles", "'חנוכה - נר ו", SpecialDayTypes.MinorYomtov));
}
else if (jDay == 2)
{
list.Add(new SpecialDay("Chanuka - Seven Candles", "'חנוכה - נר ז", SpecialDayTypes.MinorYomtov));
}
else if (jDay == 3)
{
list.Add(new SpecialDay("Chanuka - Eight Candles", "'חנוכה - נר ח", SpecialDayTypes.MinorYomtov));
}
}
else
{
if (jDay == 1)
{
list.Add(new SpecialDay("Chanuka - Seven Candles", "'חנוכה - נר ז", SpecialDayTypes.MinorYomtov));
}
else if (jDay == 2)
{
list.Add(new SpecialDay("Chanuka - Eight Candles", "'חנוכה - נר ח", SpecialDayTypes.MinorYomtov));
}
}
if (jDay == 10)
{
list.Add(new SpecialDay("Fast - 10th of Teves", "צום עשרה בטבת", SpecialDayTypes.FastDay));
}
}
/// <summary>
/// Adds the given number of years to the current date and returns the new Jewish Date
/// </summary>
/// <param name="years"></param>
/// <returns></returns>
/// <remarks>If the current month is Adar Sheini and the new year is not a leap year, the month is set to Adar.
/// If the current Day is the 30th of Cheshvan or Kislev and in the new year that month only has 29 days,
/// the day is set to the 1st of the following month.
/// </remarks>
public JewishDate AddYears(int years)
{
int year = this._year + years,
month = this._month,
day = this._day;
if (month == 13 && !JewishDateCalculations.IsJewishLeapYear(year))
{
month = 12;
}
else if (month == 8 && day == 30 && !JewishDateCalculations.IsLongCheshvan(year))
{
month = 9;
day = 1;
}
else if (month == 9 && day == 30 && JewishDateCalculations.IsShortKislev(year))
{
month = 10;
day = 1;
}
return(new JewishDate(year, month, day));
}
private Sedra(int year, bool inIsrael)
{
//If the last call is within the same year as this one, we reuse the data.
//If memory is an issue, remove these next few lines
if (_lastSedraCalculated != null && _lastSedraCalculated._year == year && _lastSedraCalculated._inIsrael == inIsrael)
{
this._firstSatInYear = _lastSedraCalculated._firstSatInYear;
this._sedraArray = _lastSedraCalculated._sedraArray;
return;
}
//Save the data in case the next call is for the same year
_lastSedraCalculated = this;
bool longCheshvon = JewishDateCalculations.IsLongCheshvan(year);
bool shortKislev = JewishDateCalculations.IsShortKislev(year);
int roshHashana = JewishDateCalculations.GetAbsoluteFromJewishDate(year, 7, 1);
DayOfWeek roshHashanaDOW = (DayOfWeek)Math.Abs(roshHashana % 7);
YearType yearType;
if (longCheshvon && !shortKislev)
{
yearType = YearType.Complete;
}
else if (!longCheshvon && shortKislev)
{
yearType = YearType.Incomplete;
}
else
{
yearType = YearType.Regular;
}
this._year = year;
this._inIsrael = inIsrael;
/* find and save the first shabbos on or after Rosh Hashana */
this._firstSatInYear = GetDayOnOrBefore(6, roshHashana + 6);
if (!JewishDateCalculations.IsJewishLeapYear(year))
{
switch (roshHashanaDOW)
{
case DayOfWeek.Saturday:
if (yearType == YearType.Incomplete)
{
this._sedraArray = shabbos_short;
}
else if (yearType == YearType.Complete)
{
this._sedraArray = shabbos_long;
}
break;
case DayOfWeek.Monday:
if (yearType == YearType.Incomplete)
{
this._sedraArray = mon_short;
}
else if (yearType == YearType.Complete)
{
this._sedraArray = this._inIsrael ? mon_short : mon_long;
}
break;
case DayOfWeek.Tuesday:
if (yearType == YearType.Regular)
{
this._sedraArray = this._inIsrael ? mon_short : mon_long;
}
break;
case DayOfWeek.Thursday:
if (yearType == YearType.Regular)
{
this._sedraArray = this._inIsrael ? thu_normal_Israel : thu_normal;
}
else if (yearType == YearType.Complete)
{
this._sedraArray = thu_long;
}
break;
default:
throw new Exception("improper sedra year type calculated.");
}
}
else /* leap year */
{
switch (roshHashanaDOW)
{
case DayOfWeek.Saturday:
if (yearType == YearType.Incomplete)
{
this._sedraArray = shabbos_short_leap;
}
else if (yearType == YearType.Complete)
{
this._sedraArray = this._inIsrael ? shabbos_short_leap : shabbos_long_leap;
}
break;
case DayOfWeek.Monday:
if (yearType == YearType.Incomplete)
{
this._sedraArray = this._inIsrael ? mon_short_leap_Israel : mon_short_leap;
}
else if (yearType == YearType.Complete)
{
this._sedraArray = this._inIsrael ? mon_long_leap_Israel : mon_long_leap;
}
break;
case DayOfWeek.Tuesday:
if (yearType == YearType.Regular)
{
this._sedraArray = this._inIsrael ? mon_long_leap_Israel : mon_long_leap;
}
break;
case DayOfWeek.Thursday:
if (yearType == YearType.Incomplete)
{
this._sedraArray = thu_short_leap;
}
else if (yearType == YearType.Complete)
{
this._sedraArray = thu_long_leap;
}
break;
default:
throw new Exception("improper sedra year type calculated.");
}
}
}
/// <summary>
/// Returns true if the given day is a special day or a fast day,
/// but not Shabbos or a major Yom Tov in the given location.
/// </summary>
/// <param name="jd"></param>
/// <param name="location"></param>
/// <returns></returns>
public static bool IsMinorYomTovOrFast(JewishDate jd, Location location)
{
DayOfWeek dow = jd.DayOfWeek;
int day = jd.Day,
month = jd.Month,
year = jd.Year;
if (dow == DayOfWeek.Saturday || IsMajorYomTov(jd, location))
{
return(false);
}
if (day.In(30, 1))
{
return(true);
}
switch (month)
{
case 1:
return(day == 14);
case 2:
return(day.In(14, 18));
case 4:
return((day == 17 && dow != DayOfWeek.Saturday) ||
(day == 18 && dow == DayOfWeek.Sunday));
case 5:
return((day == 9 && dow != DayOfWeek.Saturday) ||
(day == 10 && dow == DayOfWeek.Sunday) ||
day == 15);
case 6:
return(day == 29);
case 7:
return(((day == 3 && dow != DayOfWeek.Saturday) ||
(day == 4 && dow == DayOfWeek.Sunday)) ||
day == 9);
case 9:
return(day > 24);
case 10:
if (day < 4)
{
return(JewishDateCalculations.IsShortKislev(year) || (day < 3));
}
else
{
return(day == 10);
}
case 11:
return(day == 15);
case 12:
case 13:
if (month == 12 && JewishDateCalculations.IsJewishLeapYear(year))
{
return(day.In(14, 15));
}
else
{
return
((day == 11 && dow == DayOfWeek.Thursday) ||
(day == 13 && dow != DayOfWeek.Saturday) ||
(day.In(14, 15)));
}
default:
return(false);
}
}
