public static double ToJulianDay(int year, int month, double day)
{
double jd;
if (year > REFORM_YEAR)
{
jd = GregorianCalendar.ToJulianDay(year, month, day);
}
else if (year < REFORM_YEAR)
{
jd = JulianCalendar.ToJulianDay(year, month, day);
}
else if (month > REFORM_MONTH)
{
jd = GregorianCalendar.ToJulianDay(year, month, day);
}
else if (month < REFORM_MONTH)
{
jd = JulianCalendar.ToJulianDay(year, month, day);
}
else if (day >= 15.0)
{
jd = GregorianCalendar.ToJulianDay(year, month, day);
}
else if (day < 5.0)
{
jd = JulianCalendar.ToJulianDay(year, month, day);
}
else
{
throw new ArgumentOutOfRangeException("Invalid date: Date cannot be between Oct 4, 1582 and Oct 15, 1582");
}
return(jd);
}
public static Date FromJulianDay(double JD) => (JD < REFORM_JULIAN_DAY) ? JulianCalendar.FromJulianDay(JD)
: GregorianCalendar.FromJulianDay(JD);
public static bool IsLeapYear(int year) => year <= REFORM_YEAR?JulianCalendar.IsLeapYear(year)
: GregorianCalendar.IsLeapYear(year);
private JulianCalendar(JulianCalendar date)
: base(date)
{
}