程序代码接上所述 private DateTime m_Date;
public DateTime Date
{
     get{ return m_Date;}
     set{ m_Date = value;}
}
public CNDate()
{
     Date = DateTime.Today;
}
public CNDate(DateTime dt)
{
     Date = dt.Date;
}

//计算指定日期的星座序号
public int GetConstellation()
{
     int Y, M, D;
     Y = m_Date.Year;
     M = m_Date.Month;
     D = m_Date.Day;
     Y = M * 100 + D;
     if (((Y >= 321) && (Y <= 419))) { return 0;}
          else if ((Y >= 420) && (Y <= 520)) { return 1;}
          else if ((Y >= 521) && (Y <= 620)) { return 2;}
          else if ((Y >= 621) && (Y <= 722)) { return 3;}
          else if ((Y >= 723) && (Y <= 822)) { return 4;}
          else if ((Y >= 823) && (Y <= 922)) { return 5;}
          else if ((Y >= 923) && (Y <= 1022)) { return 6;}
          else if ((Y >= 1023) && (Y <= 1121)) { return 7;}
          else if ((Y >= 1122) && (Y <= 1221)) { return 8;}
          else if ((Y >= 1222) || (Y <= 119)) { return 9;}
          else if ((Y >= 120) && (Y <= 218)) { return 10;}
          else if ((Y >= 219) && (Y <= 320)) { return 11;}
          else { return -1;};
}

//计算指定日期的星座名称
public string GetConstellationName()
{
     int Constellation;
     Constellation = GetConstellation();
     if ((Constellation >= 0) && (Constellation <= 11))
          { return ConstellationName[Constellation];}
          else
               { return "";};
}

//计算公历当天对应的节气 0-23，-1表示不是节气
public int l_GetLunarHolDay()
{
byte Flag;
int Day, iYear, iMonth, iDay;
iYear = m_Date.Year;
if ((iYear < START_YEAR) || (iYear > END_YEAR))
     { return -1;};
          iMonth = m_Date.Month;
          iDay = m_Date.Day;
          Flag = gLunarHolDay[(iYear - START_YEAR) * 12 + iMonth - 1];
          if (iDay < 15)
              { Day = 15 - ((Flag >> 4) & 0x0f);}
               else
                    {Day = (Flag & 0x0f) + 15;};
                    if (iDay == Day)
                    {
                         if (iDay > 15)
                            { return (iMonth - 1) * 2 + 1;}
                         else
                             { return (iMonth - 1) * 2;}
                    }
               else
          {return -1;};
     }
public string FormatMonth(ushort iMonth, bool bLunar)
{
string szText = "正二三四五六七八九十";
string strMonth;
if ((!bLunar) && (iMonth == 1))
{ return "一月";}
     if (iMonth <= 10)
     {
          strMonth = "";
          strMonth = strMonth + szText.Substring(iMonth - 1, 1);
          strMonth = strMonth + "月";
          return strMonth;
     }
     if (iMonth == 11)
     { strMonth = "十一";}
     else
          { strMonth = "十二";}
          return strMonth + "月";
     }
public string FormatLunarDay(ushort iDay)
{
     string szText1 = "初十廿三";
     string szText2 = "一二三四五六七八九十";
     string strDay;
     if ((iDay != 20) && (iDay != 30))
     {
          strDay = szText1.Substring((iDay - 1) / 10, 1);
          strDay = strDay + szText2.Substring((iDay - 1) % 10, 1);
     }
     else
     {
          strDay = szText1.Substring((iDay / 10) * 2 + 1, 2);
          strDay = strDay + "十";
     }
    return strDay;
}
public string GetLunarHolDay()
{
     ushort iYear, iMonth, iDay;
     int i;
     TimeSpan ts;
     iYear = (ushort)(m_Date.Year);
     if ((iYear < START_YEAR) || (iYear > END_YEAR))
     { return "";};
         i = l_GetLunarHolDay();
          if ((i >= 0) && (i <= 23))
               { return LunarHolDayName[i];}
          else
           {
               ts = m_Date - (new DateTime(START_YEAR, 1, 1));
               l_CalcLunarDate(out iYear, out iMonth, out iDay, (uint)(ts.Days));
               return FormatMonth(iMonth, true) + FormatLunarDay(iDay);
          }
}

//返回阴历iLunarYear年的闰月月份，如没有返回0 1901年1月---2050年12月

public int GetLeapMonth(ushort iLunarYear)
{
     byte Flag;
     if ((iLunarYear < START_YEAR) || (iLunarYear > END_YEAR))
     { return 0;};
          Flag = gLunarMonth[(iLunarYear - START_YEAR) / 2];
     if ((iLunarYear - START_YEAR) % 2 == 0)
          {return Flag >> 4;}
     else
          {return Flag & 0x0F;}
}
//返回阴历iLunarYer年阴历iLunarMonth月的天数，如果iLunarMonth为闰月，
//高字为第二个iLunarMonth月的天数，否则高字为0 1901年1月---2050年12月
public uint LunarMonthDays(ushort iLunarYear, ushort iLunarMonth)
{
     int Height, Low
     int iBit;
     if ((iLunarYear < START_YEAR) || (iLunarYear > END_YEAR))
     { return 30; }
Height = 0;
Low = 29;

　

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