Riêng
phần tính giờ nước lên, nước xuống thì mình chưa có thuật toán tính,
nên mục này bà con xem thận trọng nha. Ai có thật toán tính giờ con nước
thì chỉ mình với.
Các bạn có thể thảm khảo bài viết:
Cách Tính Giờ Âm Lịch để hiểu hơn về chương trình này
Còn đây là thuật toán:
Option Explicit ' TRAN TU LIEM
Const PI As Double = 3.14159265358979 ' Atn(1) * 4
Function jdFromDate(ByVal dd As Long, ByVal mm As Long, ByVal yy As Long) As Long
Dim a As Double, y As Long, M As Long, jd As Long
a = Fix((14 - mm) / 12)
y = yy + 4800 - a
M = mm + 12 * a - 3
jd = dd + Fix((153 * M + 2) / 5) + 365 * y _
+ Fix(y / 4) - Fix(y / 100) + Fix(y / 400) - 32045
If jd < 2299161 Then
jd = dd + Fix((153 * M + 2) / 5) + 365 * y + Fix(y / 4) - 32083
End If
jdFromDate = jd
End Function
Function jdToDate(jd)
' doi ngay july thành ngay thuong
Dim a, b, c, d, e, M, Day, Month, Year
If jd > 2299160 Then
a = jd + 32044
b = Int((4 * a + 3) / 146097)
c = a - Int((b * 146097) / 4)
Else
b = 0
c = jd + 32082
End If
d = Int((4 * c + 3) / 1461)
e = c - Int((1461 * d) / 4)
M = Int((5 * e + 2) / 153)
Day = e - Int((153 * M + 2) / 5) + 1
Month = M + 3 - 12 * Int(M / 10)
Year = b * 100 + d - 4800 + Int(M / 10)
jdToDate = DateSerial(Year, Month, Day)
End Function
Function NewMoon(ByVal k As Long) As Double
Dim T As Double, T2 As Double, T3 As Double, dr As Double
Dim Jd1 As Double, M As Double, Mpr As Double
Dim F As Double, C1 As Double, deltat As Double, JdNew As Double
T = k / 1236.85 ' Time in Julian centuries from 1900 January 0.5
T2 = T * T
T3 = T2 * T
dr = PI / 180
Jd1 = 2415020.75933 + 29.53058868 * k + 0.0001178 * T2 - 0.000000155 * T3
Jd1 = Jd1 + 0.00033 * Sin((166.56 + 132.87 * T - 0.009173 * T2) * dr)
M = 359.2242 + 29.10535608 * k - 0.0000333 * T2 - 0.00000347 * T3
Mpr = 306.0253 + 385.81691806 * k + 0.0107306 * T2 + 0.00001236 * T3
F = 21.2964 + 390.67050646 * k - 0.0016528 * T2 - 0.00000239 * T3
C1 = (0.1734 - 0.000393 * T) * Sin(M * dr) + 0.0021 * Sin(2 * dr * M)
C1 = C1 - 0.4068 * Sin(Mpr * dr) + 0.0161 * Sin(dr * 2 * Mpr)
C1 = C1 - 0.0004 * Sin(dr * 3 * Mpr)
C1 = C1 + 0.0104 * Sin(dr * 2 * F) - 0.0051 * Sin(dr * (M + Mpr))
C1 = C1 - 0.0074 * Sin(dr * (M - Mpr)) + 0.0004 * Sin(dr * (2 * F + M))
C1 = C1 - 0.0004 * Sin(dr * (2 * F - M)) - 0.0006 * Sin(dr * (2 * F + Mpr))
C1 = C1 + 0.001 * Sin(dr * (2 * F - Mpr)) + 0.0005 * Sin(dr * (2 * Mpr + M))
If (T < -11) Then
deltat = 0.001 + 0.000839 * T + 0.0002261 * T2 _
- 0.00000845 * T3 - 0.000000081 * T * T3
Else
deltat = -0.000278 + 0.000265 * T + 0.000262 * T2
End If
JdNew = Jd1 + C1 - deltat
NewMoon = JdNew
End Function
Function SunLongitude(ByVal jdn As Double) As Double
Dim T As Double, T2 As Double, dr As Double, M As Double
Dim L0 As Double, DL As Double, L As Double
T = (jdn - 2451545) / 36525
' Time in Julian centuries from 2000-01-01 12:00:00 GMT
T2 = T * T
dr = PI / 180 ' degree to radian
M = 357.5291 + 35999.0503 * T - 0.0001559 * T2 - 0.00000048 * T * T2
L0 = 280.46645 + 36000.76983 * T + 0.0003032 * T2
DL = (1.9146 - 0.004817 * T - 0.000014 * T2) * Sin(dr * M)
DL = DL + (0.019993 - 0.000101 * T) * Sin(dr * 2 * M) _
+ 0.00029 * Sin(dr * 3 * M)
L = L0 + DL ' true longitude, degree
L = L * dr
L = L - PI * 2 * (Fix(L / (PI * 2))) ' Normalize to (0, 2*PI)
SunLongitude = L
End Function
Function getSunLongitude(ByVal dayNumber As Double, ByVal timeZone As Byte) As Long
getSunLongitude = Fix(SunLongitude(dayNumber - 0.5 - timeZone / 24) / PI * 6)
End Function
Function getNewMoonDay(ByVal k As Long, ByVal timeZone As Long) As Long
getNewMoonDay = Fix(NewMoon(k) + 0.5 + timeZone / 24)
End Function
Function getLunarMonth11(ByVal yy As Long, ByVal timeZone As Long) As Long
Dim k As Long, off As Double, nm As Long, sunLong As Double
off = jdFromDate(31, 12, yy) - 2415021
k = Fix(off / 29.530588853)
nm = getNewMoonDay(k, timeZone)
sunLong = getSunLongitude(nm, timeZone) ' sun longitude at local midnight
If (sunLong >= 9) Then
nm = getNewMoonDay(k - 1, timeZone)
End If
getLunarMonth11 = nm
End Function
Function getLeapMonthOffset(ByVal a11 As Double, ByVal timeZone As Long) As Long
Dim k As Long, last As Long, Arc As Long, I As Long
k = Fix((a11 - 2415021.07699869) / 29.530588853 + 0.5)
last = 0
I = 1 ' We start with the month following lunar month 11
Arc = getSunLongitude(getNewMoonDay(k + I, timeZone), timeZone)
Do
last = Arc
I = I + 1
Arc = getSunLongitude(getNewMoonDay(k + I, timeZone), timeZone)
Loop While (Arc <> last And I < 14)
getLeapMonthOffset = I - 1
End Function
Public Function KinhDoMatTroi(gio, phut, dd, mm, yy)
'tinh kinh ?o mat troi
Dim PI, a, y, M, T, jdn, L0, jd, c, theta, lambda
PI = 4 * Atn(1)
a = Int((14 - mm) / 12)
y = yy + 4800 - a
M = mm + 12 * a - 3
jdn = dd + Int(((153 * M) + 2) / 5) + 365 * y + Int(y / 4) - Int(y / 100) + Int(y / 400) - 32045
If jdn < 2299161 Then jdn = dd + Int((153 * M + 2) / 5) + 365 * y + Int(y / 4) - 32083
jd = jdn + ((gio - 12) / 24) + (phut / 1440) - 7 / 24
T = (jd - 2451545#) / 36525
L0 = 280.46645 + 36000.76983 * T + 0.0003032 * T * T
M = (357.5291 + 35999.0503 * T - 0.0001559 * T * T - 0.00000048 * T * T * T) * PI / 180
c = ((1.9146 - 0.004817 * T - 0.000014 * T * T) * Sin(M)) + (0.01993 - 0.000101 * T) * Sin(2 * M) + 0.00029 * Sin(3 * M)
theta = L0 + c
lambda = theta - 0.00569 - 0.00478 * Sin((125.04 - 1934.136 * T) * PI / 180)
lambda = lambda - 360 * Int(lambda / 360)
KinhDoMatTroi = lambda
End Function
Function convertSolar2Lunar(dd, mm, yy, timeZone)
'Doi ngày duong dd/mm/yyyy ra ngày âm
Dim k, dayNumber, monthStart, a11, b11, lunarDay, lunarMonth, lunarYear, lunarLeap, diff, leapMonthDiff
dayNumber = jdFromDate(dd, mm, yy)
k = Int((dayNumber - 2415021.07699869) / 29.530588853)
monthStart = getNewMoonDay(k + 1, timeZone)
If monthStart > dayNumber Then monthStart = getNewMoonDay(k, timeZone)
a11 = getLunarMonth11(yy, timeZone)
b11 = a11
If a11 >= monthStart Then
lunarYear = yy
a11 = getLunarMonth11(yy - 1, timeZone)
Else
lunarYear = yy + 1
b11 = getLunarMonth11(yy + 1, timeZone)
End If
lunarDay = dayNumber - monthStart + 1
diff = Int((monthStart - a11) / 29)
lunarLeap = 0
lunarMonth = diff + 11
If (b11 - a11) > 365 Then
leapMonthDiff = getLeapMonthOffset(a11, timeZone)
If diff >= leapMonthDiff Then
lunarMonth = diff + 10
If diff = leapMonthDiff Then lunarLeap = 1
End If
End If
If lunarMonth > 12 Then lunarMonth = lunarMonth - 12
If (lunarMonth >= 11 And diff < 4) Then lunarYear = lunarYear - 1
convertSolar2Lunar = lunarDay & "/" & lunarMonth & "/" & lunarYear
End Function
Function THANGNODU(dd, mm, yy, timeZone)
'THANG NO DU
Dim k, dayNumber, monthStart, a11, b11, lunarDay, lunarMonth, lunarYear, lunarLeap, diff, leapMonthDiff
dayNumber = jdFromDate(dd, mm, yy)
k = Int((dayNumber - 2415021.07699869) / 29.530588853)
monthStart = getNewMoonDay(k + 1, timeZone)
If monthStart > dayNumber Then monthStart = getNewMoonDay(k, timeZone)
a11 = getLunarMonth11(yy, timeZone)
b11 = a11
If a11 >= monthStart Then
lunarYear = yy
a11 = getLunarMonth11(yy - 1, timeZone)
Else
lunarYear = yy + 1
b11 = getLunarMonth11(yy + 1, timeZone)
End If
lunarDay = dayNumber - monthStart + 1
diff = Int((monthStart - a11) / 29)
lunarLeap = 0
lunarMonth = diff + 11
If (b11 - a11) > 365 Then
leapMonthDiff = getLeapMonthOffset(a11, timeZone)
If diff >= leapMonthDiff Then
lunarMonth = diff + 10
If diff = leapMonthDiff Then lunarLeap = 1
End If
End If
If lunarMonth > 12 Then lunarMonth = lunarMonth - 12
If (lunarMonth >= 11 And diff < 4) Then lunarYear = lunarYear - 1
THANGNODU = getNewMoonDay(k + 1, timeZone) - getNewMoonDay(k, timeZone)
End Function
Function THANGNHUAN(dd, mm, yy, timeZone)
'THANG NHUAN
Dim k, dayNumber, monthStart, a11, b11, lunarDay, lunarMonth, lunarYear, lunarLeap, diff, leapMonthDiff
dayNumber = jdFromDate(dd, mm, yy)
k = Int((dayNumber - 2415021.07699869) / 29.530588853)
monthStart = getNewMoonDay(k + 1, timeZone)
If monthStart > dayNumber Then monthStart = getNewMoonDay(k, timeZone)
a11 = getLunarMonth11(yy, timeZone)
b11 = a11
If a11 >= monthStart Then
lunarYear = yy
a11 = getLunarMonth11(yy - 1, timeZone)
Else
lunarYear = yy + 1
b11 = getLunarMonth11(yy + 1, timeZone)
End If
lunarDay = dayNumber - monthStart + 1
diff = Int((monthStart - a11) / 29)
lunarLeap = 0
lunarMonth = diff + 11
If (b11 - a11) > 365 Then
leapMonthDiff = getLeapMonthOffset(a11, timeZone)
THANGNHUAN = (leapMonthDiff + 10) Mod 12
End If
End Function
Function convertLunar2Solar(lunarDay, lunarMonth, lunarYear, lunarLeap, timeZone)
'Doi âm lich ra duong lich
Dim k, a11, b11, off, leapOff, leapMonth, monthStart
If (lunarMonth < 11) Then
a11 = getLunarMonth11(lunarYear - 1, timeZone)
b11 = getLunarMonth11(lunarYear, timeZone)
Else
a11 = getLunarMonth11(lunarYear, timeZone)
b11 = getLunarMonth11(lunarYear + 1, timeZone)
End If
off = lunarMonth - 11
If (off < 0) Then off = off + 12
If (b11 - a11 > 365) Then
leapOff = getLeapMonthOffset(a11, timeZone)
leapMonth = leapOff - 2
If (leapMonth < 0) Then leapMonth = leapMonth + 12
If (lunarLeap <> 0 And lunarMonth <> leapMonth) Then
convertLunar2Solar = Array(0, 0, 0)
Else
If (lunarLeap <> 0 Or off >= leapOff) Then off = off + 1
End If
End If
k = Int(0.5 + (a11 - 2415021.07699869) / 29.530588853)
monthStart = getNewMoonDay(k + off, timeZone)
convertLunar2Solar = jdToDate(monthStart + lunarDay - 1)
End Function
Function Ngay(dd, mm, yy, timeZone)
'Doi ngày duong dd/mm/yyyy ra ngày âm: Ngay
Dim k, dayNumber, monthStart, a11, b11, lunarDay, lunarMonth, lunarYear, lunarLeap, diff, leapMonthDiff
dayNumber = jdFromDate(dd, mm, yy)
k = Int((dayNumber - 2415021.07699869) / 29.530588853)
monthStart = getNewMoonDay(k + 1, timeZone)
If monthStart > dayNumber Then monthStart = getNewMoonDay(k, timeZone)
a11 = getLunarMonth11(yy, timeZone)
b11 = a11
If a11 >= monthStart Then
lunarYear = yy
a11 = getLunarMonth11(yy - 1, timeZone)
Else
lunarYear = yy + 1
b11 = getLunarMonth11(yy + 1, timeZone)
End If
lunarDay = dayNumber - monthStart + 1
diff = Int((monthStart - a11) / 29)
lunarLeap = 0
lunarMonth = diff + 11
If (b11 - a11) > 365 Then
leapMonthDiff = getLeapMonthOffset(a11, timeZone)
If diff >= leapMonthDiff Then
lunarMonth = diff + 10
If diff = leapMonthDiff Then lunarLeap = 1
End If
End If
If lunarMonth > 12 Then lunarMonth = lunarMonth - 12
If (lunarMonth >= 11 And diff < 4) Then lunarYear = lunarYear - 1
Ngay = lunarDay
End Function
Function Thang(dd, mm, yy, timeZone)
'Doi ngày duong dd/mm/yyyy ra ngày âm: Thang
Dim k, dayNumber, monthStart, a11, b11, lunarDay, lunarMonth, lunarYear, lunarLeap, diff, leapMonthDiff
dayNumber = jdFromDate(dd, mm, yy)
k = Int((dayNumber - 2415021.07699869) / 29.530588853)
monthStart = getNewMoonDay(k + 1, timeZone)
If monthStart > dayNumber Then monthStart = getNewMoonDay(k, timeZone)
a11 = getLunarMonth11(yy, timeZone)
b11 = a11
If a11 >= monthStart Then
lunarYear = yy
a11 = getLunarMonth11(yy - 1, timeZone)
Else
lunarYear = yy + 1
b11 = getLunarMonth11(yy + 1, timeZone)
End If
lunarDay = dayNumber - monthStart + 1
diff = Int((monthStart - a11) / 29)
lunarLeap = 0
lunarMonth = diff + 11
If (b11 - a11) > 365 Then
leapMonthDiff = getLeapMonthOffset(a11, timeZone)
If diff >= leapMonthDiff Then
lunarMonth = diff + 10
If diff = leapMonthDiff Then lunarLeap = 1
End If
End If
If lunarMonth > 12 Then lunarMonth = lunarMonth - 12
If (lunarMonth >= 11 And diff < 4) Then lunarYear = lunarYear - 1
Thang = lunarMonth
End Function
Function Nam(dd, mm, yy, timeZone)
'Doi ngày duong dd/mm/yyyy ra ngày âm
Dim k, dayNumber, monthStart, a11, b11, lunarDay, lunarMonth, lunarYear, lunarLeap, diff, leapMonthDiff
dayNumber = jdFromDate(dd, mm, yy)
k = Int((dayNumber - 2415021.07699869) / 29.530588853)
monthStart = getNewMoonDay(k + 1, timeZone)
If monthStart > dayNumber Then monthStart = getNewMoonDay(k, timeZone)
a11 = getLunarMonth11(yy, timeZone)
b11 = a11
If a11 >= monthStart Then
lunarYear = yy
a11 = getLunarMonth11(yy - 1, timeZone)
Else
lunarYear = yy + 1
b11 = getLunarMonth11(yy + 1, timeZone)
End If
lunarDay = dayNumber - monthStart + 1
diff = Int((monthStart - a11) / 29)
lunarLeap = 0
lunarMonth = diff + 11
If (b11 - a11) > 365 Then
leapMonthDiff = getLeapMonthOffset(a11, timeZone)
If diff >= leapMonthDiff Then
lunarMonth = diff + 10
If diff = leapMonthDiff Then lunarLeap = 1
End If
End If
If lunarMonth > 12 Then lunarMonth = lunarMonth - 12
If (lunarMonth >= 11 And diff < 4) Then lunarYear = lunarYear - 1
Nam = lunarYear
End Function
Function Duongcongkynhat(dd, mm, yy, timeZone)
'Doi ngày duong dd/mm/yyyy ra ngày âm
Dim k, dayNumber, monthStart, a11, b11, lunarDay, lunarMonth, lunarYear, lunarLeap, NgayAm, diff, leapMonthDiff
dayNumber = jdFromDate(dd, mm, yy)
k = Int((dayNumber - 2415021.07699869) / 29.530588853)
monthStart = getNewMoonDay(k + 1, timeZone)
If monthStart >= dayNumber Then monthStart = getNewMoonDay(k, timeZone)
a11 = getLunarMonth11(yy, timeZone)
b11 = a11
If a11 >= monthStart Then
lunarYear = yy
a11 = getLunarMonth11(yy - 1, timeZone)
Else
lunarYear = yy + 1
b11 = getLunarMonth11(yy + 1, timeZone)
End If
lunarDay = dayNumber - monthStart + 1
diff = Int((monthStart - a11) / 29)
lunarLeap = 0
lunarMonth = diff + 11
If (b11 - a11) > 365 Then
leapMonthDiff = getLeapMonthOffset(a11, timeZone)
If diff >= leapMonthDiff Then
lunarMonth = diff + 10
If diff = leapMonthDiff Then lunarLeap = 1
End If
End If
If lunarMonth > 12 Then lunarMonth = lunarMonth - 12
If (lunarMonth >= 11 And diff < 4) Then lunarYear = lunarYear - 1
NgayAm = lunarDay & "/" & lunarMonth
Duongcongkynhat = ""
If
NgayAm = "13/1" Or NgayAm = "11/2" Or NgayAm = "9/3" Or NgayAm = "7/4"
Or NgayAm = "5/5" Or NgayAm = "3/6" Or NgayAm = "8/7" Or NgayAm = "29/7"
Or NgayAm = "27/8" Or NgayAm = "25/9" Or NgayAm = "23/10" Or NgayAm =
"21/11" Or NgayAm = "19/12" Then Duongcongkynhat = 1
End Function
Function TamNuongSat(dd, mm, yy, timeZone)
'Kiem tra ngay dd/mm/yyyy có phai ngay Tam Nuong Sat
Dim k, dayNumber, monthStart, a11, b11, lunarDay, lunarMonth, lunarYear, lunarLeap, TamNuong, diff, leapMonthDiff
dayNumber = jdFromDate(dd, mm, yy)
k = Int((dayNumber - 2415021.07699869) / 29.530588853)
monthStart = getNewMoonDay(k + 1, timeZone)
If monthStart >= dayNumber Then monthStart = getNewMoonDay(k, timeZone)
a11 = getLunarMonth11(yy, timeZone)
b11 = a11
If a11 >= monthStart Then
lunarYear = yy
a11 = getLunarMonth11(yy - 1, timeZone)
Else
lunarYear = yy + 1
b11 = getLunarMonth11(yy + 1, timeZone)
End If
lunarDay = dayNumber - monthStart + 1
diff = Int((monthStart - a11) / 29)
lunarLeap = 0
lunarMonth = diff + 11
If (b11 - a11) > 365 Then
leapMonthDiff = getLeapMonthOffset(a11, timeZone)
If diff >= leapMonthDiff Then
lunarMonth = diff + 10
If diff = leapMonthDiff Then lunarLeap = 1
End If
End If
If lunarMonth > 12 Then lunarMonth = lunarMonth - 12
If (lunarMonth >= 11 And diff < 4) Then lunarYear = lunarYear - 1
TamNuongSat = ""
If lunarDay = 2 Or lunarDay = 7 Or lunarDay = 13 Or lunarDay = 18 Or lunarDay = 22 Or lunarDay = 27 Then TamNuongSat = 1
End Function
Function NgayNguyetKy(dd, mm, yy, timeZone)
'Kiem tra ngay dd/mm/yyyy có phai ngay Nguyet Ky
Dim k, dayNumber, monthStart, a11, b11, lunarDay, lunarMonth, lunarYear, lunarLeap, TamNuong, diff, leapMonthDiff
dayNumber = jdFromDate(dd, mm, yy)
k = Int((dayNumber - 2415021.07699869) / 29.530588853)
monthStart = getNewMoonDay(k + 1, timeZone)
If monthStart >= dayNumber Then monthStart = getNewMoonDay(k, timeZone)
a11 = getLunarMonth11(yy, timeZone)
b11 = a11
If a11 >= monthStart Then
lunarYear = yy
a11 = getLunarMonth11(yy - 1, timeZone)
Else
lunarYear = yy + 1
b11 = getLunarMonth11(yy + 1, timeZone)
End If
lunarDay = dayNumber - monthStart + 1
diff = Int((monthStart - a11) / 29)
lunarLeap = 0
lunarMonth = diff + 11
If (b11 - a11) > 365 Then
leapMonthDiff = getLeapMonthOffset(a11, timeZone)
If diff >= leapMonthDiff Then
lunarMonth = diff + 10
If diff = leapMonthDiff Then lunarLeap = 1
End If
End If
If lunarMonth > 12 Then lunarMonth = lunarMonth - 12
If (lunarMonth >= 11 And diff < 4) Then lunarYear = lunarYear - 1
NgayNguyetKy = ""
If lunarDay = 5 Or lunarDay = 14 Or lunarDay = 23 Then NgayNguyetKy = 1
End Function
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