# Epoch Adjustment: # 1 Farvardin 1 Shamsi = March 21, 622 Gregorian. # March 21 is day 80 in a non-leap Gregorian year (622 was not a leap year). # Days passed in Gregorian calendar before Shamsi epoch start = 621 * 365 + leaps_g + 80 # Instead of absolute epoch, we calculate the offset. # A simpler approximation used in converters: # Gregorian days = Total Shamsi Days + Offset # Offset calculation: g_year = self.year + 621 # Calculate Gregorian leap years passed up to g_year # (Using standard Gregorian leap year logic) g_leaps = (g_year - 1) // 4 - (g_year - 1) // 100 + (g_year - 1) // 400 # Julian Day Number (JDN) approach is the most accurate "developed" solution. # Let's implement a JDN conversion for professional grade accuracy. jdn = self._to_jdn() return self._jdn_to_gregorian(jdn) Ybxpro Login Link Apr 2026
def _is_shamsi_leap_year(self, year): """ Determines if a Shamsi year is a leap year. The Solar Hijri calendar has a complex 33-year cycle. Years 1, 5, 9, 13, 17, 22, 26, 30 in the cycle are typically leap years. This logic aligns with the astronomical calculations. """ # A commonly used accurate algorithm for Solar Hijri leap years: # Remainders of division define the leap years in the cycle. a = [1, 5, 9, 13, 17, 22, 26, 30] remainder = year % 33 return remainder in a Magix Music Maker Soundpool Dvd Collection Mega Pack 9 - 19 Apr 2026
def _shamsi_days_in_months(self, month): """Helper to sum days of months passed.""" days = 0 for m in range(1, month): days += self.SHAMSI_MONTH_DAYS[m-1] return days
# Example 3: Leap Year Check (Esfand 30th) # 1403 is a leap year in Shamsi try: date3 = ShamsiConverter(1403, 12, 30) print(f"1403/12/30 Shamsi (Leap) -> {date3.to_miladi()} Miladi") except ValueError as e: print(e)
# Check day against month length month_length = self._get_shamsi_month_length(self.year, self.month) if self.day > month_length: raise ValueError(f"Day {self.day} is invalid for month {self.month} in year {self.year} (Max: {month_length}).")