Check For Good Friday
'***************************************************************************
'* Function Name : bIsGoodFriday
*
'* Created By : Thomas A. Cassano
*
'* date : 00/00/98
*
'* Purpose : Determines whether the day is Good Friday
*
'* Arguments : dCompare_date
*
'* Returns : Boolean
*
'* Comments : None
*
'***************************************************************************
Function bIsGoodFriday(dCompare_date as date) as Boolean
Dim iCurrent_Year as Integer
Dim a
as Integer
Dim b
as Integer
Dim c
as Integer
Dim d
as Integer
Dim e
as Integer
Dim iDayOfEasterSunday as Integer
Dim iMonthOfEasterSunday as Integer
Dim dEasterSunday as date
Dim dGoodFriday as date
iCurrent_Year = Year(dCompare_date)
a = iCurrent_Year Mod 19
b = iCurrent_Year Mod 4
c = iCurrent_Year Mod 7
d = (19 * a + 24) Mod 30
e = (2 * b + 4 * c + 6 * d + 5) Mod 7
iDayOfEasterSunday = 22 + d + e
iMonthOfEasterSunday = 3
If iDayOfEasterSunday > 31 then
iDayOfEasterSunday = d + e - 9
iMonthOfEasterSunday = 4
End If
If iDayOfEasterSunday = 26 And iMonthOfEasterSunday = 4 then
iDayOfEasterSunday = 19
End If
If iDayOfEasterSunday = 25 And iMonthOfEasterSunday = 4 And d = 28 And e = 6 And a > 10 then
iDayOfEasterSunday = 18
End If
dEasterSunday = DateSerial(iCurrent_Year, iMonthOfEasterSunday,
iDayOfEasterSunday)
dGoodFriday = DateAdd("d", -2, dEasterSunday)
End Function
