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Number of Specified Days in a Specified Month. See Also: Determine nth Weekday of a Specified Date || Return Last Chosen Day of Given Month
The function below can be used to determine how may days (e.g Mondays etc) there are in any specified month. For example
will return 5 as there are five Wednesdays in the month of December in 2003
will return 4 as there are four Thursdays in the month of December in 2003
To be able to use this custom function in a Workbook, you must first place the code below into a standard module.
Function HowManyDaysInMonth(FullDateAs String, sDay As String) As Integer Dim i As Integer Dim iDay As Integer, iMatchDay As Integer Dim iDaysInMonth As Integer Dim FullDateNew As Date iMatchDay = Weekday(FullDate) Select Case UCase(sDay) Case "SUN" iDay = 1 Case "MON" iDay = 2 Case "TUE"quot; iDay = 3 Case "WED" iDay = 4 Case "THU" iDay = 5 Case "FRI" iDay = 6 Case "SAT" iDay = 7 End Select iDaysInMonth = Day(DateAdd("d", -1, DateSerial _ (Year(FullDate), Month(FullDate) + 1, 1))) FullDateNew = DateSerial(Year(FullDate), Month(FullDate), iDaysInMonth) For i = iDaysInMonth - 1 To 0 Step -1 If Weekday(FullDateNew - i) = iDay Then HowManyDaysInMonth = HowManyDaysInMonth + 1 End If Next i End Function
Now simply enter the function into any cell as shown above.
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