Module: HebCal::PassoverHelper

Defined in:
lib/hebcal/passoverHelper.rb

Class Method Summary collapse

Class Method Details

.CalculateMolad(yearH) ⇒ Object 



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# File 'lib/hebcal/passoverHelper.rb', line 13

def PassoverHelper.CalculateMolad yearH
  _HPD = PassoverConstants::HALAKIM_PER_DAY
  _LC = PassoverConstants::LUNAR_CYCLE

  year_in_julian_cycle = yearH % 4
  drift_since_epoch = (_LC + PassoverConstants::EPOCH_TEKUFAH + (_LC - PassoverConstants::ANNUAL_DRIFT) * (yearH % 19) - _HPD) % _LC

  _LC + _HPD + PassoverConstants::MOLAD_ZAQEN + drift_since_epoch + (year_in_julian_cycle * PassoverConstants::JULIAN_ANNUAL_CALENDAR_DRIFT) - (PassoverConstants::JULIAN_ERROR_PER_19_YEAR_CYCLE * (yearH / 19).floor)
end

.IsLeapYear(year) ⇒ Object 



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# File 'lib/hebcal/passoverHelper.rb', line 5

def PassoverHelper.IsLeapYear year
  [3,6,8,11,14,17,19].include? (year % 19)
end

.PrecedesLeapYear(year) ⇒ Object 



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# File 'lib/hebcal/passoverHelper.rb', line 9

def PassoverHelper.PrecedesLeapYear year
  IsLeapYear(year+1)
end