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Public Function NongLi(Optional XX_DATE As Date)
Dim MonthAdd(11), NongliData(99), TianGan(9), DiZhi(11), ShuXiang(11), DayName(30), MonName(12)
Dim curTime, curYear, curMonth, curDay
Dim GongliStr, NongliStr, NongliDayStr
Dim i, m, n, k, isEnd, bit, TheDate
'獲取當(dāng)前系統(tǒng)時(shí)間
curTime = XX_DATE
'天干名稱
TianGan(0) = "甲"
TianGan(1) = "乙"
TianGan(2) = "丙"
TianGan(3) = "丁"
TianGan(4) = "戊"
TianGan(5) = "己"
TianGan(6) = "庚"
TianGan(7) = "辛"
TianGan(8) = "壬"
TianGan(9) = "癸"
'地支名稱
DiZhi(0) = "子"
DiZhi(1) = "丑"
DiZhi(2) = "寅"
DiZhi(3) = "卯"
DiZhi(4) = "辰"
DiZhi(5) = "巳"
DiZhi(6) = "午"
DiZhi(7) = "未"
DiZhi(8) = "申"
DiZhi(9) = "酉"
DiZhi(10) = "戌"
DiZhi(11) = "亥"
'屬相名稱
ShuXiang(0) = "鼠"
ShuXiang(1) = "牛"
ShuXiang(2) = "虎"
ShuXiang(3) = "兔"
ShuXiang(4) = "龍"
ShuXiang(5) = "蛇"
ShuXiang(6) = "馬"
ShuXiang(7) = "羊"
ShuXiang(8) = "猴"
ShuXiang(9) = "雞"
ShuXiang(10) = "狗"
ShuXiang(11) = "豬"
'農(nóng)歷日期名
DayName(0) = "*"
DayName(1) = "初一"
DayName(2) = "初二"
DayName(3) = "初三"
DayName(4) = "初四"
DayName(5) = "初五"
DayName(6) = "初六"
DayName(7) = "初七"
DayName(8) = "初八"
DayName(9) = "初九"
DayName(10) = "初十"
DayName(11) = "十一"
DayName(12) = "十二"
DayName(13) = "十三"
DayName(14) = "十四"
DayName(15) = "十五"
DayName(16) = "十六"
DayName(17) = "十七"
DayName(18) = "十八"
DayName(19) = "十九"
DayName(20) = "二十"
DayName(21) = "廿一"
DayName(22) = "廿二"
DayName(23) = "廿三"
DayName(24) = "廿四"
DayName(25) = "廿五"
DayName(26) = "廿六"
DayName(27) = "廿七"
DayName(28) = "廿八"
DayName(29) = "廿九"
DayName(30) = "三十"
'農(nóng)歷月份名
MonName(0) = "*"
MonName(1) = "正"
MonName(2) = "二"
MonName(3) = "三"
MonName(4) = "四"
MonName(5) = "五"
MonName(6) = "六"
MonName(7) = "七"
MonName(8) = "八"
MonName(9) = "九"
MonName(10) = "十"
MonName(11) = "十一"
MonName(12) = "臘"
'公歷每月前面的天數(shù)
MonthAdd(0) = 0
MonthAdd(1) = 31
MonthAdd(2) = 59
MonthAdd(3) = 90
MonthAdd(4) = 120
MonthAdd(5) = 151
MonthAdd(6) = 181
MonthAdd(7) = 212
MonthAdd(8) = 243
MonthAdd(9) = 273
MonthAdd(10) = 304
MonthAdd(11) = 334
'農(nóng)歷數(shù)據(jù)
NongliData(0) = 2635
NongliData(1) = 333387
NongliData(2) = 1701
NongliData(3) = 1748
NongliData(4) = 267701
NongliData(5) = 694
NongliData(6) = 2391
NongliData(7) = 133423
NongliData(8) = 1175
NongliData(9) = 396438
NongliData(10) = 3402
NongliData(11) = 3749
NongliData(12) = 331177
NongliData(13) = 1453
NongliData(14) = 694
NongliData(15) = 201326
NongliData(16) = 2350
NongliData(17) = 465197
NongliData(18) = 3221
NongliData(19) = 3402
NongliData(20) = 400202
NongliData(21) = 2901
NongliData(22) = 1386
NongliData(23) = 267611
NongliData(24) = 605
NongliData(25) = 2349
NongliData(26) = 137515
NongliData(27) = 2709
NongliData(28) = 464533
NongliData(29) = 1738
NongliData(30) = 2901
NongliData(31) = 330421
NongliData(32) = 1242
NongliData(33) = 2651
NongliData(34) = 199255
NongliData(35) = 1323
NongliData(36) = 529706
NongliData(37) = 3733
NongliData(38) = 1706
NongliData(39) = 398762
NongliData(40) = 2741
NongliData(41) = 1206
NongliData(42) = 267438
NongliData(43) = 2647
NongliData(44) = 1318
NongliData(45) = 204070
NongliData(46) = 3477
NongliData(47) = 461653
NongliData(48) = 1386
NongliData(49) = 2413
NongliData(50) = 330077
NongliData(51) = 1197
NongliData(52) = 2637
NongliData(53) = 268877
NongliData(54) = 3365
NongliData(55) = 531109
NongliData(56) = 2900
NongliData(57) = 2922
NongliData(58) = 398042
NongliData(59) = 2395
NongliData(60) = 1179
NongliData(61) = 267415
NongliData(62) = 2635
NongliData(63) = 661067
NongliData(64) = 1701
NongliData(65) = 1748
NongliData(66) = 398772
NongliData(67) = 2742
NongliData(68) = 2391
NongliData(69) = 330031
NongliData(70) = 1175
NongliData(71) = 1611
NongliData(72) = 200010
NongliData(73) = 3749
NongliData(74) = 527717
NongliData(75) = 1452
NongliData(76) = 2742
NongliData(77) = 332397
NongliData(78) = 2350
NongliData(79) = 3222
NongliData(80) = 268949
NongliData(81) = 3402
NongliData(82) = 3493
NongliData(83) = 133973
NongliData(84) = 1386
NongliData(85) = 464219
NongliData(86) = 605
NongliData(87) = 2349
NongliData(88) = 334123
NongliData(89) = 2709
NongliData(90) = 2890
NongliData(91) = 267946
NongliData(92) = 2773
NongliData(93) = 592565
NongliData(94) = 1210
NongliData(95) = 2651
NongliData(96) = 395863
NongliData(97) = 1323
NongliData(98) = 2707
NongliData(99) = 265877
'生成當(dāng)前公歷年、月、日 ==
GongliStr
curYear = Year(curTime)
curMonth = Month(curTime)
curDay = Day(curTime)
GongliStr = curYear "年"
If (curMonth 10)
Then
GongliStr = GongliStr "0" curMonth "月"
Else
GongliStr = GongliStr curMonth "月"
End If
If (curDay 10)
Then
GongliStr = GongliStr "0" curDay "日"
Else
GongliStr = GongliStr curDay "日"
End If
'計(jì)算到初始時(shí)間1921年2月8日的天數(shù)：1921-2-8(正月初一)
TheDate = (curYear - 1921) * 365 + Int((curYear - 1921) / 4) + curDay + MonthAdd(curMonth - 1) - 38
If ((curYear Mod 4) = 0 And curMonth 2)
Then
TheDate = TheDate + 1
End If
'計(jì)算農(nóng)歷天干、地支、月、日
isEnd = 0
m = 0
Do
If (NongliData(m) 4095)
Then
k = 11
Else
k = 12
End If
n = k
Do
If (n 0) Then
Exit Do
End If
'獲取NongliData(m)的第n個(gè)二進(jìn)制位的值
bit = NongliData(m)
For i = 1 To n Step 1
bit = Int(bit / 2)
Next
bit = bit Mod 2
If (TheDate = 29 + bit) Then
isEnd = 1
Exit Do
End If
TheDate = TheDate - 29 - bit
n = n - 1
Loop
If (isEnd = 1) Then
Exit Do
End If
m = m + 1
Loop
curYear = 1921 + m
curMonth = k - n + 1
curDay = TheDate
If (k = 12) Then
If (curMonth = (Int(NongliData(m) / 65536) + 1))
Then
curMonth = 1 - curMonth
Else
If (curMonth (Int(NongliData(m) / 65536) + 1))
Then
curMonth = curMonth - 1
End If
End If
'生成農(nóng)歷天干、地支、屬相 ==
NongliStr
NongliStr = "農(nóng)歷" TianGan(((curYear - 4) Mod 60) Mod 10) DiZhi(((curYear - 4) Mod 60) Mod 12) "年"
NongliStr = NongliStr "(" ShuXiang(((curYear - 4) Mod 60) Mod 12) ")"
'生成農(nóng)歷月、日 == NongliDayStr
If (curMonth 1) Then
NongliDayStr = "閏" MonName(-1 * curMonth)
Else
NongliDayStr = MonName(curMonth)
End If
NongliDayStr = NongliDayStr "月"
NongliDayStr = NongliDayStr DayName(curDay)
NongLi = NongliStr NongliDayStr
End Function
將上面這段代碼保存在模塊中，就可以用公式
=nongli(A1)
調(diào)用了。
用VB做萬(wàn)年歷，非常關(guān)鍵點(diǎn)就是農(nóng)歷寫(xiě)法，參考代碼如下：
#Region " 返回農(nóng)歷 "
'返回農(nóng)歷
'cCalendar.MaxSupportedDateTime 返回支持的最大日期，即2101-1-28
'cCalendar.MinSupportedDateTime 返回支持的最小日期，即190－2-19
Private cCalendar As New System.Globalization.ChineseLunisolarCalendar
Public Function PubFunGet_CNDate(ByVal sDateTime As Date) As String
cCalendar = New System.Globalization.ChineseLunisolarCalendar
Dim lyear As Integer = cCalendar.GetYear(sDateTime)
Dim lmonth As Integer = cCalendar.GetMonth(sDateTime)
Dim lday As Integer = cCalendar.GetDayOfMonth(sDateTime)
Dim lweek As Integer = cCalendar.GetDayOfWeek(sDateTime)
'獲取閏月， 0 則表示沒(méi)有閏月
Dim leapMonth As Integer = cCalendar.GetLeapMonth(lyear)
Dim isleap As Boolean = False
If (leapMonth 0) Then
If (leapMonth = lmonth) Then
'閏月
isleap = True
lmonth = lmonth - 1
ElseIf (lmonth leapMonth) Then
lmonth = lmonth - 1
End If
End If
Return String.Concat(GetLunisolarYear(lyear), IIf(isleap = True, "閏年", "年"), GetLunisolarMonth(lmonth), "月", GetLunisolarDay(lday))
End Function
'十天干
Private tiangan As String() = {"甲", "乙", "丙", "丁", "戊", "己", "庚", "辛", "壬", "癸"}
'十二地支
Private dizhi As String() = {"子", "丑", "寅", "卯", "辰", "巳", "午", "未", "申", "酉", "戌", "亥"}
'十二生肖
Private shengxiao As String() = {"鼠", "牛", "虎", "免", "龍", "蛇", "馬", "羊", "猴", "雞", "狗", "豬"}
'農(nóng)歷月
Private months As String() = {"正", "二", "三", "四", "五", "六", "七", "八", "九", "十", "十一", "十二(臘)"}
'農(nóng)歷日
Private days1 As String() = {"初", "十", "廿", "三"}
Private days As String() = {"一", "二", "三", "四", "五", "六", "七", "八", "九", "十"}
'返回農(nóng)歷年（天干 地支 生肖）
Private Function GetLunisolarYear(ByVal year As Integer) As String
GetLunisolarYear = ""
If (year 3) Then
Dim tgIndex As Integer = (year - 4) Mod 10
Dim dzIndex As Integer = (year - 4) Mod 12
Return tiangan(tgIndex) dizhi(dzIndex) "[" shengxiao(dzIndex) "]"
End If
'無(wú)效的年份!
End Function
'返回生肖
Private Function GetShengXiao(ByVal sDateTime As Date) As String
Return shengxiao(cCalendar.GetTerrestrialBranch(cCalendar.GetSexagenaryYear(sDateTime)) - 1)
End Function
'返回農(nóng)歷月
Private Function GetLunisolarMonth(ByVal month As Integer) As String
GetLunisolarMonth = ""
If (month 13 AndAlso month 0) Then
Return months(month - 1)
End If
'無(wú)效的月份!
End Function
'返回農(nóng)歷日
Private Function GetLunisolarDay(ByVal day As Integer) As String
GetLunisolarDay = ""
If (day 0 AndAlso day 32) Then
If (day 20 AndAlso day 30) Then
Return String.Concat(days1((day - 1) \ 10), days((day - 1) Mod 10))
Else
Return String.Concat(days((day - 1) \ 10), days1(1))
End If
End If
'無(wú)效的日!
End Function
#End Region
'下面是一個(gè)關(guān)于VB的農(nóng)歷算法
'提供基本計(jì)算方法，具體應(yīng)用自己補(bǔ)充
'日期數(shù)據(jù)定義方法如下
'前12個(gè)字節(jié)代表1-12月為大月或是小月，1為大月30天，0為小月29天，
'第13位為閏月的情況，1為大月30天，0為小月29天，第14位為閏月的月
'份，如果不是閏月為0，否則給出月份，10、11、12分別用A、B、C來(lái)表
'示，即使用16進(jìn)制。最后4位為當(dāng)年家農(nóng)歷新年-即農(nóng)歷1月1日所在公歷
'的日期，如0131代表1月31日。
'GetYLDate函數(shù)使用方式如下tYear為要輸入的年，tMonth為月，tDay為
'日期，YLyear是返回值，返加農(nóng)歷的年份，如甲子年，YLShuXing返回
'的是屬象，如鼠。IsGetGl是設(shè)置是不是通過(guò)農(nóng)歷取公歷值，如果是，
'前三個(gè)返回相應(yīng)的公歷日期，而且返回值是一個(gè)公歷日期。
Function GetYLDate(tYear As Integer, tMonth As Integer, tDay As Integer, _
YLyear As String, YLShuXing As String, _
Optional IsGetGl As Boolean) As String
On Error Resume Next
Dim daList(1900 To 2011) As String * 18
Dim conDate As Date, setDate As Date
Dim AddMonth As Integer, AddDay As Integer, AddYear As Integer, getDay As Integer
Dim RunYue As Boolean
If tYear 2010 Or tYear 1901 Then Exit Function '如果不是有效有日期，退出
'1900 to 1909
daList(1900) = "010010110110180131"
daList(1901) = "010010101110000219"
daList(1902) = "101001010111000208"
daList(1903) = "010100100110150129"
daList(1904) = "110100100110000216"
daList(1905) = "110110010101000204"
daList(1906) = "011010101010140125"
daList(1907) = "010101101010000213"
daList(1908) = "100110101101000202"
daList(1909) = "010010101110120122"
daList(1910) = "010010101110000210"
daList(1911) = "101001001101160130"
daList(1912) = "101001001101000218"
daList(1913) = "110100100101000206"
daList(1914) = "110101010100150126"
daList(1915) = "101101010101000214"
daList(1916) = "010101101010000204"
daList(1917) = "100101101101020123"
daList(1918) = "100101011011000211"
daList(1919) = "010010011011170201"
daList(1920) = "010010011011000220"
daList(1921) = "101001001011000208"
daList(1922) = "101100100101150128"
daList(1923) = "011010100101000216"
daList(1924) = "011011010100000205"
daList(1925) = "101011011010140124"
daList(1926) = "001010110110000213"
daList(1927) = "100101010111000202"
daList(1928) = "010010010111120123"
daList(1929) = "010010010111000210"
daList(1930) = "011001001011060130"
daList(1931) = "110101001010000217"
daList(1932) = "111010100101000206"
daList(1933) = "011011010100150126"
daList(1934) = "010110101101000214"
daList(1935) = "001010110110000204"
daList(1936) = "100100110111030124"
daList(1937) = "100100101110000211"
daList(1938) = "110010010110170131"
daList(1939) = "110010010101000219"
daList(1940) = "110101001010000208"
daList(1941) = "110110100101060127"
daList(1942) = "101101010101000215"
daList(1943) = "010101101010000205"
daList(1944) = "101010101101140125"
daList(1945) = "001001011101000213"
daList(1946) = "100100101101000202"
daList(1947) = "110010010101120122"
daList(1948) = "101010010101000210"
daList(1949) = "101101001010170129"
daList(1950) = "011011001010000217"
daList(1951) = "101101010101000206"
daList(1952) = "010101011010150127"
daList(1953) = "010011011010000214"
daList(1954) = "101001011011000203"
daList(1955) = "010100101011130124"
daList(1956) = "010100101011000212"
daList(1957) = "101010010101080131"
daList(1958) = "111010010101000218"
daList(1959) = "011010101010000208"
daList(1960) = "101011010101060128"
daList(1961) = "101010110101000215"
daList(1962) = "010010110110000205"
daList(1963) = "101001010111040125"
daList(1964) = "101001010111000213"
daList(1965) = "010100100110000202"
daList(1966) = "111010010011030121"
daList(1967) = "110110010101000209"
daList(1968) = "010110101010170130"
daList(1969) = "010101101010000217"
daList(1970) = "100101101101000206"
daList(1971) = "010010101110150127"
daList(1972) = "010010101101000215"
daList(1973) = "101001001101000203"
daList(1974) = "110100100110140123"
daList(1975) = "110100100101000211"
daList(1976) = "110101010010180131"
daList(1977) = "101101010100000218"
daList(1978) = "101101101010000207"
daList(1979) = "100101101101060128"
daList(1980) = "100101011011000216"
daList(1981) = "010010011011000205"
daList(1982) = "101001001011140125"
daList(1983) = "101001001011000213"
daList(1984) = "1011001001011A0202"
daList(1985) = "011010100101000220"
daList(1986) = "011011010100000209"
daList(1987) = "101011011010060129"
daList(1988) = "101010110110000217"
daList(1989) = "100100110111000206"
daList(1990) = "010010010111150127"
daList(1991) = "010010010111000215"
daList(1992) = "011001001011000204"
daList(1993) = "011010100101030123"
daList(1994) = "111010100101000210"
daList(1995) = "011010110010180131"
daList(1996) = "010110101100000219"
daList(1997) = "101010110110000207"
daList(1998) = "100100110110150128"
daList(1999) = "100100101110000216"
daList(2000) = "110010010110000205"
daList(2001) = "110101001010140124"
daList(2002) = "110101001010000212"
daList(2003) = "110110100101000201"
daList(2004) = "010110101010120122"
daList(2005) = "010101101010000209"
daList(2006) = "101010101101170129"
daList(2007) = "001001011101000218"
daList(2008) = "100100101101000207"
daList(2009) = "110010010101150126"
daList(2010) = "101010010101000214"
daList(2011) = "101101001010000214"
AddYear = tYear
RunYue = False
If IsGetGl Then
AddMonth = Val(Mid(daList(AddYear), 15, 2))
AddDay = Val(Mid(daList(AddYear), 17, 2))
conDate = DateSerial(AddYear, AddMonth, AddDay)
AddDay = tDay
For i = 1 To tMonth - 1
AddDay = AddDay + 29 + Val(Mid(daList(tYear), i, 1))
Next i
'MsgBox DateDiff("d", conDate, Date)
setDate = DateAdd("d", AddDay - 1, conDate)
GetYLDate = setDate
tYear = Year(setDate)
tMonth = Month(setDate)
tDay = Day(setDate)
Exit Function
End If
CHUSHIHUA:
AddMonth = Val(Mid(daList(AddYear), 15, 2))
AddDay = Val(Mid(daList(AddYear), 17, 2))
conDate = DateSerial(AddYear, AddMonth, AddDay)
setDate = DateSerial(tYear, tMonth, tDay)
getDay = DateDiff("d", conDate, setDate)
If getDay 0 Then AddYear = AddYear - 1: GoTo CHUSHIHUA
' addday = NearDay
AddDay = 1: AddMonth = 1
For i = 1 To getDay
AddDay = AddDay + 1
If AddDay = 30 + Mid(daList(AddYear), AddMonth, 1) Or (RunYue And AddDay = 30 + Mid(daList(AddYear), 13, 1)) Then
If RunYue = False And AddMonth = Val("H" Mid(daList(AddYear), 14, 1)) Then
RunYue = True
Else
RunYue = False
AddMonth = AddMonth + 1
End If
AddDay = 1
End If
Next
md$ = "初一初二初三初四初五初六初七初八初九初十十一十二十三十四十五十六十七十八十九二十廿一廿二廿三廿四廿五廿六廿七廿八廿九三十"
dd$ = Mid(md$, (AddDay - 1) * 2 + 1, 2)
mm$ = Mid("正二三四五六七八九十寒臘", AddMonth, 1) + "月"
YouGetDate = DateSerial(AddYear, AddMonth, AddDay)
tiangan$ = "甲乙丙丁戊已庚辛壬癸"
dizhi$ = "子丑寅卯辰巳午未申酉戌亥"
Dim ganzhi(0 To 59) As String * 2
For i = 0 To 59
ganzhi(i) = Mid(tiangan$, (i Mod 10) + 1, 1) + Mid(dizhi$, (i Mod 12) + 1, 1)
'ff$ = ff$ + ganzhi(i)
Next i
'MsgBox ff$, , Len(ff$)
YLyear = ganzhi((AddYear - 4) Mod 60)
shu$ = "鼠牛虎兔龍蛇馬羊猴雞狗豬"
YLShuXing = Mid(shu$, ((AddYear - 4) Mod 12) + 1, 1)
If RunYue Then mm$ = "閏" + mm$
GetYLDate = mm$ + dd$
End Function
'下面是一個(gè)使用的例子，你需要在窗體上加上一個(gè)按扭，并命名為Command1，然后將下列代碼復(fù)制到窗體的代碼中
Private Sub Command1_Click()
Dim ty As Integer, tm As Integer, td As Integer, yl As String, sx As String
'取公歷1999年10月28日的農(nóng)歷日期
ty = 1999
tm = 10
td = 28
t = GetYLDate(ty, tm, td, yl, sx)
MsgBox t
MsgBox ty "-" tm "-" td " " yl " " sx
'取1999年農(nóng)歷十月28的公歷日期
t = GetYLDate(ty, tm, td, yl, sx, True)
MsgBox t
MsgBox ty "-" tm "-" td " " yl " " sx
End Sub
根據(jù)經(jīng)驗(yàn), 這個(gè)算法非常復(fù)雜. 經(jīng)過(guò)查找，終于得到一些資料, 在此愿與大家分享。 首先陰歷以月為基本單位，一個(gè)月以新月出現(xiàn)的那一天為始直至下一個(gè)新月出現(xiàn)的前一天。 由于月亮公轉(zhuǎn)的周期介于29到30天之間，陰歷的一個(gè)月也就由新月出現(xiàn)時(shí)刻的早晚或是29天或是30天。 大月為30天，小月為29天。 與陽(yáng)歷不同的是，大小月在不同的年中不固定。 如春節(jié)的前一天常稱為大年三十，但有不少年如2000年的陰歷十二月只有29天。 由于十二個(gè)月的時(shí)間較陽(yáng)歷年即地球繞太陽(yáng)公轉(zhuǎn)一周的時(shí)間短11天左右. 為了使陰歷年與陽(yáng)歷年保持相對(duì)穩(wěn)定，每隔兩三年就需要加入一個(gè)閏月。 大約每十九年要加入七個(gè)閏月。 而二十四節(jié)氣則是由地球在繞太陽(yáng)公轉(zhuǎn)的軌道上的位置確定的。 以每年的冬至為始，每15度為一個(gè)節(jié)氣。 是故二十四節(jié)氣在陽(yáng)歷的每月中有大概固定的日期。 古時(shí)以二十四節(jié)氣指導(dǎo)農(nóng)耕，這就是陰歷又稱農(nóng)歷的原因。 其中陽(yáng)歷下半月的十二個(gè)節(jié)氣又稱為中氣。 中氣出現(xiàn)的時(shí)刻和閏月的確定有直接的關(guān)系。 陰歷的計(jì)算有下列四條規(guī)則： 1．所有新月和節(jié)氣出現(xiàn)的時(shí)刻的計(jì)算以東經(jīng)120度即東八區(qū)標(biāo)準(zhǔn)時(shí)為準(zhǔn)。 但計(jì)算1929年以前的陰歷時(shí)應(yīng)以北京即東經(jīng)116度25分的當(dāng)?shù)貢r(shí)為準(zhǔn)。 2．新月出現(xiàn)的一天為一個(gè)月的第一天。 如某個(gè)節(jié)氣的出現(xiàn)時(shí)刻也在這一天，則不論該節(jié)氣的出現(xiàn)時(shí)刻是否比新月晚，一律算落入新的一個(gè)月中。 3．每年的冬至總是落在這年的十一月中。 從一年的冬至的第二天起到下一年冬至這一天止的這段時(shí)間稱為一歲。 如一歲中有十三個(gè)新月出現(xiàn)，則這一歲為閏歲，要加入一個(gè)閏月。 4．閏歲中第一個(gè)沒(méi)有中氣的月為閏月。 因?yàn)橐粴q中只有十二個(gè)中氣，所以閏歲中至少有一個(gè)月沒(méi)有中氣，也存在有兩個(gè)月沒(méi)有中氣的可能性。 但這種情況下只有第一個(gè)沒(méi)有中氣的月為閏月。 閏月的前一個(gè)月為幾月則該閏月稱為閏幾月。 根據(jù)以上信息, 我們知道農(nóng)歷是根據(jù)天文觀測(cè)進(jìn)行指定的（也許可以在天文學(xué)的書(shū)上找到說(shuō)明）。 為了簡(jiǎn)化轉(zhuǎn)換計(jì)算, 很多程序人員設(shè)計(jì)了基于"時(shí)間段內(nèi)查表"方法的例程. 更具體的說(shuō)明和源碼請(qǐng)參考下面這些資料：
下面是一個(gè)關(guān)于VB的農(nóng)歷算法
'日期數(shù)據(jù)定義方法如下
'前12個(gè)字節(jié)代表1-12月為大月或是小月，1為大月30天，0為小月29天；
'第13位為閏月的情況，1為大月30天，0為小月29天；
'第14位為閏月的月份，如果不是閏月為0，否則給出月份，10、11、12分別用A、B、C來(lái)表示，即使用16進(jìn)制；
'最后4位為當(dāng)年家農(nóng)歷新年-即農(nóng)歷1月1日所在公歷的日期，如0131代表1月31日。
Function GetChgDate(ByVal vDate As String, ByVal ChgType As 轉(zhuǎn)換方式) As String
Dim vvdate() As String = Split(vDate, "-")
If vvdate(0) 2011 Or vvdate(0) 1900 Then
Throw New NotSupportedException("本函數(shù)只提供1900年至2011年的日歷轉(zhuǎn)換！")
End If
Dim AddMonth, AddDay, AddYear, getDay, i As Integer
Dim RunYue As Boolean
Dim conDate As DateTime
Dim daList(2011) As String
daList(1900) = "010010110110180131"
daList(1901) = "010010101110000219"
daList(1902) = "101001010111000208"
daList(1903) = "010100100110150129"
daList(1904) = "110100100110000216"
daList(1905) = "110110010101000204"
daList(1906) = "011010101010140125"
daList(1907) = "010101101010000213"
daList(1908) = "100110101101000202"
daList(1909) = "010010101110120122"
daList(1910) = "010010101110000210"
daList(1911) = "101001001101160130"
daList(1912) = "101001001101000218"
daList(1913) = "110100100101000206"
daList(1914) = "110101010100150126"
daList(1915) = "101101010101000214"
daList(1916) = "010101101010000204"
daList(1917) = "100101101101020123"
daList(1918) = "100101011011000211"
daList(1919) = "010010011011170201"
daList(1920) = "010010011011000220"
daList(1921) = "101001001011000208"
daList(1922) = "101100100101150128"
daList(1923) = "011010100101000216"
daList(1924) = "011011010100000205"
daList(1925) = "101011011010140124"
daList(1926) = "001010110110000213"
daList(1927) = "100101010111000202"
daList(1928) = "010010010111120123"
daList(1929) = "010010010111000210"
daList(1930) = "011001001011060130"
daList(1931) = "110101001010000217"
daList(1932) = "111010100101000206"
daList(1933) = "011011010100150126"
daList(1934) = "010110101101000214"
daList(1935) = "001010110110000204"
daList(1936) = "100100110111030124"
daList(1937) = "100100101110000211"
daList(1938) = "110010010110170131"
daList(1939) = "110010010101000219"
daList(1940) = "110101001010000208"
daList(1941) = "110110100101060127"
daList(1942) = "101101010101000215"
daList(1943) = "010101101010000205"
daList(1944) = "101010101101140125"
daList(1945) = "001001011101000213"
daList(1946) = "100100101101000202"
daList(1947) = "110010010101120122"
daList(1948) = "101010010101000210"
daList(1949) = "101101001010170129"
daList(1950) = "011011001010000217"
daList(1951) = "101101010101000206"
daList(1952) = "010101011010150127"
daList(1953) = "010011011010000214"
daList(1954) = "101001011011000203"
daList(1955) = "010100101011130124"
daList(1956) = "010100101011000212"
daList(1957) = "101010010101080131"
daList(1958) = "111010010101000218"
daList(1959) = "011010101010000208"
daList(1960) = "101011010101060128"
daList(1961) = "101010110101000215"
daList(1962) = "010010110110000205"
daList(1963) = "101001010111040125"
daList(1964) = "101001010111000213"
daList(1965) = "010100100110000202"
daList(1966) = "111010010011030121"
daList(1967) = "110110010101000209"
daList(1968) = "010110101010170130"
daList(1969) = "010101101010000217"
daList(1970) = "100101101101000206"
daList(1971) = "010010101110150127"
daList(1972) = "010010101101000215"
daList(1973) = "101001001101000203"
daList(1974) = "110100100110140123"
daList(1975) = "110100100101000211"
daList(1976) = "110101010010180131"
daList(1977) = "101101010100000218"
daList(1978) = "101101101010000207"
daList(1979) = "100101101101060128"
daList(1980) = "100101011011000216"
daList(1981) = "010010011011000205"
daList(1982) = "101001001011140125"
daList(1983) = "101001001011000213"
daList(1984) = "1011001001011A0202"
daList(1985) = "011010100101000220"
daList(1986) = "011011010100000209"
daList(1987) = "101011011010060129"
daList(1988) = "101010110110000217"
daList(1989) = "100100110111000206"
daList(1990) = "010010010111150127"
daList(1991) = "010010010111000215"
daList(1992) = "011001001011000204"
daList(1993) = "011010100101030123"
daList(1994) = "111010100101000210"
daList(1995) = "011010110010180131"
daList(1996) = "010110101100000219"
daList(1997) = "101010110110000207"
daList(1998) = "100100110110150128"
daList(1999) = "100100101110000216"
daList(2000) = "110010010110000205"
daList(2001) = "110101001010140124"
daList(2002) = "110101001010000212"
daList(2003) = "110110100101000201"
daList(2004) = "010110101010120122"
daList(2005) = "010101101010000209"
daList(2006) = "101010101101170129"
daList(2007) = "001001011101000218"
daList(2008) = "100100101101000207"
daList(2009) = "110010010101150126"
daList(2010) = "101010010101000214"
daList(2011) = "101101001010000214"
AddYear = vvdate(0)
If ChgType = 轉(zhuǎn)換方式.陰歷轉(zhuǎn)陽(yáng)歷 Then
AddMonth = Val(Mid(daList(AddYear), 15, 2))
AddDay = Val(Mid(daList(AddYear), 17, 2))
conDate = DateSerial(AddYear, AddMonth, AddDay)
AddDay = vvdate(2)
For i = 1 To vvdate(1) - 1
AddDay = AddDay + 29 + Val(Mid(daList(vvdate(0)), i, 1))
Next i
Return DateAdd(DateInterval.Day, AddDay - 1, conDate)
Else
CHUSHIHUA:
AddMonth = Val(Mid(daList(AddYear), 15, 2))
AddDay = Val(Mid(daList(AddYear), 17, 2))
conDate = DateSerial(AddYear, AddMonth, AddDay)
Dim vtDate As DateTime
Try
vtDate = CType(vDate, DateTime)
Catch ex As Exception
Throw New NotSupportedException("陽(yáng)歷日期輸入錯(cuò)誤！")
End Try
getDay = DateDiff(DateInterval.Day, conDate, vtDate)
If getDay 0 Then AddYear = AddYear - 1 : GoTo CHUSHIHUA
AddDay = 1
AddMonth = 1
For i = 1 To getDay
AddDay = AddDay + 1
If AddDay = 30 + Mid(daList(AddYear), AddMonth, 1) Or (RunYue And AddDay = 30 + Mid(daList(AddYear), 13, 1)) Then
If RunYue = False And AddMonth = Val("H" Mid(daList(AddYear), 14, 1)) Then
RunYue = True
Else
RunYue = False
AddMonth = AddMonth + 1
End If
AddDay = 1
End If
Next
Return AddYear "-" AddMonth "-" AddDay
End If
End Function
Enum 轉(zhuǎn)換方式
陰歷轉(zhuǎn)陽(yáng)歷 = 1
陽(yáng)歷轉(zhuǎn)陰歷 = 0
End Enum
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