Is there a reason for not using something like:
=TEXT(DATEVALUE(TEXT(B1,"0000-00-00")),"MMM DD, YYYY")&": "&C1
in column D?
For example:
Code:
Sub Demo()
Application.ScreenUpdating = False
Application.Calculation = xlCalculationManual
Dim i As Long
With ThisWorkbook.Worksheets("Sheet1").UsedRange
For i = 1 To .Cells.SpecialCells(xlCellTypeLastCell).Row
.Cells(i, 4).Value = "=TEXT(DATEVALUE(TEXT(B" & i & "," & _
Chr(34) & "0000-00-00" & Chr(34) & "))," & Chr(34) & _
"MMM DD, YYYY" & Chr(34) & ")&" & Chr(34) & ": " & Chr(34) & "&C" & i
Next
End With
Application.Calculation = xlCalculationAutomatic
Application.ScreenUpdating = True
End Sub