'1901～2100
Private Const ylData = "010010111101080131,010010101110000219,101001010111000208,010101001101050129,110100100110000216,110110010101000204,011001010101140125,010101101010000213,100110101101000202,010101011101020122," & _
"010010101110000210,101001011011060130,101001001101000218,110100100101000206,110100100101150126,101101010101000214,010101101010000204,101011011010020123,100101011011000211,010010010111170201," & _
"010010011011000220,101001001011000208,101101001011050128,011010100101000216,011011010100000205,101010110101140124,001010110110000213,100101010111000202,010100101111020123,010010010111000210," & _
"011001010110060130,110101001010000217,111010100101000206,011010101001150126,010110101101000214,001010110110000204,100001101110130124,100100101110000211,110010001101170131,110010010101000219," & _
"110101001010000208,110110001010160127,101101010101000215,010101101010000205,101001011011140125,001001011101000213,100100101101000202,110100101011020122,101010010101000210,101101010101070129," & _
"011011001010000217,101101010101000206,010100110101150127,010011011010000214,101001011011000203,010001010111130124,010100101011000212,101010011010080131,111010010101000218,011010101010000208," & _
"101011101010060128,101010110101000215,010010110110000205,101010101110040125,101001010111000213,010100100110000202,111100100110030121,110110010101000209,010110110101070130,010101101010000217," & _
"100101101101000206,010011011101050127,010010101101000215,101001001101000203,110101001101040123,110100100101000211,110101010101080131,101101010100000218,101101101010000207,100101011010160128," & _
"100101011011000216,010010011011000205,101010010111040125,101001001011000213,1011001001110A0202,011010100101000220,011011010100000209,101011110100060129,101010110110000217,100101010111000206," & _
"010010101111050127,010010010111000215,011001001011000204,011101001010030123,111010100101000210,011010110101080131,010110101100000219,101010110110000207,100101101101050128,100100101110000216," & _
"110010010110000205,110110010101040124,110101001010000212,110110100101000201,011101010101020122,010101101010000209,101010111011070129,001001011101000218,100100101101000207,110010101011050126," & _
"101010010101000214,101101001010000203,101110101010040123,101011010101000210,010101011101090131,010010111010000219,101001011011000208,010100010111160128,010100101011000216,101010010011000205," & _
"011110010101040125,011010101010000212,101011010101000201,010110110101020122,010010110110000210,100101101110060129,101001001110000217,110100100110000206,111010100110050126,110101010011000213," & _
"010110101010000203,011101101010030123,100101101101000211,0100101010110B0131,010010101101000219,101001001101000208,110100001011160128,110100100101000215,110101010010000204,110111010100050124," & _
"101101011010000212,010101101101000201,010101011011020122,010010011011000210,101001010111070130,101001001011000217,101010100101000206,101100100101150126,011011010010000214,101011011010000202," & _
"010010110110130123,100100110111000211,010010011111080201,010010010111000219,011001001011000208,011010001010160128,111010100101000215,011010101010000204,101001101100140124,101010101110000212," & _
"100100101110000202,110100101110030121,110010010110000209,110101010101070129,110101001010000217,110110100100000205,010111010101050126,010101101010000214,101001101100000203,010101011101040123," & _
"010100101101000211,101010011011080131,101010010101000219,101101001010000207,101101101010060127,101011010101000215,010101011010000205,101010111010040124,101001011010000212,010100101011000202," & _
"101100100111030122,011010010011000209,011100110011070129,011010101010000217,101011010101000206,010010110101150126,010010110110000214,101001010111000203,010101001110040124,110100010110000210," & _
"111010010110080130,110101010010000218,110110101010000207,011010101010160127,010101101101000215,010010101110000205,101010011101040125,101000101101000212,110100010101000201,111100100101020121,110101010010000209"
Private Const ylMd0 = "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 "
Private Const ylMn0 = "正二三四五六七八九十冬腊"
Private Const ylTianGan0 = "甲乙丙丁戊己庚辛壬癸"
Private Const ylDiZhi0 = "子丑寅卯辰巳午未申酉戌亥"
Private Const ylShu0 = "鼠牛虎兔龙蛇马羊猴鸡狗猪"
'公历日期转农历
Function GetNLDate(ByVal strDate As String) As String
If Not IsDate(strDate) Then Return ""
Dim setDate As Date
Dim tYear, tMonth, tDay As Integer
'
setDate = CDate(strDate)
tYear = Year(setDate) : tMonth = Month(setDate) : tDay = CDate(setDate).ToString("dd")
'超出范围
If tYear > 2100 OrElse tYear < 1901 Then Return ""
'
Dim daList(1) As String
Dim conDate As Date
Dim thisMonths As String
Dim AddYear, AddMonth, AddDay, getDay, RunYue1, mDays, i, j As Integer
Dim YLyear, YLShuXing As String
Dim dd0, mm0 As String
Dim ganzhi(59) As String
Dim RunYue As Boolean
Try
'加载2年内的农历数据
daList(0) = ylData.Substring((tYear - 1900 - 1) * 19, 18)
daList(1) = ylData.Substring((tYear - 1900) * 19, 18)
AddYear = tYear
j = 1
While True
AddMonth = CInt(Mid(daList(j), 15, 2))
AddDay = CInt(Mid(daList(j), 17, 2))
conDate = DateSerial(AddYear, AddMonth, AddDay) '农历新年日期
getDay = DateDiff(DateInterval.Day, conDate, setDate) + 1 '相差天数
If getDay > 0 Then Exit While
AddYear -= 1
j -= 1
End While
thisMonths = Left(daList(j), 14)
RunYue1 = Val("&H" & Right(thisMonths, 1)) '闰月月份
If RunYue1 > 0 Then '有闰月
thisMonths = Left(thisMonths, RunYue1) & Mid(thisMonths, 13, 1) & Mid(thisMonths, RunYue1 + 1)
End If
thisMonths = Left(thisMonths, 13)
For i = 1 To 13 '计算天数
mDays = 29 + CInt(Mid(thisMonths, i, 1))
If getDay > mDays Then
getDay = getDay - mDays
Else
If RunYue1 > 0 Then
If i = RunYue1 + 1 Then RunYue = True
If i > RunYue1 Then i = i - 1
End If
AddMonth = i
AddDay = getDay
Exit For
End If
Next
dd0 = Mid(ylMd0, (AddDay - 1) * 2 + 1, 2)
mm0 = Mid(ylMn0, AddMonth, 1) + "月"
For i = 0 To 59
ganzhi(i) = Mid(ylTianGan0, (i Mod 10) + 1, 1) + Mid(ylDiZhi0, (i Mod 12) + 1, 1)
Next
YLyear = ganzhi((AddYear - 4) Mod 60)
YLShuXing = Mid(ylShu0, ((AddYear - 4) Mod 12) + 1, 1)
If RunYue Then mm0 = "闰" & mm0
Catch ex As Exception
Return ""
End Try
Return "农历:" & YLyear & "(" & YLShuXing & ")年" & mm0 & dd0
End Function