Китайский календарь

void Main()
{
    string[] years = new[]{"", "Крыса","Бык","Тигр","Кот","Дракон", "Змея", "Лошадь", "Коза", "Обезьяна","Петух","Собака","Кабан"};
    var chnCalendar = new ChineseLunisolarCalendar();
    List<ChineseZodiac> info = new List<ChineseZodiac>();
    DateTime date = new DateTime(1929, 1, 1);
    for (int i=0; i<120; i++)
    {
        date = chnCalendar.FindFirstNewYearDate(date);
        var zodiac = new ChineseZodiac();
        zodiac.BeginDate = date;
        zodiac.Name = years[chnCalendar.GetTerrestrialBranch(chnCalendar.GetSexagenaryYear(date))];
        date = chnCalendar.FindFirstNewYearDate(date).AddDays(-1);
        zodiac.EndDate = date;
        info.Add(zodiac);
    }
    info.GroupBy(z => z.Name).Select(g => new { g.Key, Years = string.Join(", ", g.Select(zz => zz.BeginDate.Year)) }).Dump();
}
 
class ChineseZodiac
{
    public string Name;
    public DateTime BeginDate;
    public DateTime EndDate;
}
 
static class Ext
{
    public static DateTime FindFirstNewYearDate(this EastAsianLunisolarCalendar calendar, DateTime d)
    {
        int curYear = calendar.GetYear(d);
        for(;;)
        {
            d = d.AddDays(1);
            if (curYear != calendar.GetYear(d))
            {
                break;
            }
        }
       return d;
    }
}