Date Not Formatting Correctly

I am using the code below to breakout some data into sheets. However, when the data is copied over into the sheets the dates are not formatted correctly. Does anyone have a quick fix to add to the macro for this problem?

Dim LastRow As Long, LastCol As Integer, i As Long, iStart As Long, iEnd As Long
Dim ws As Worksheet, r As Range, iCol As Integer, t As Date, Prefix As String
Dim sh As Worksheet, Master As String, Folder As String, Fname As String
On Error Resume Next
Set r = Application.InputBox("Click in the column to extract by", Type:=8)
On Error GoTo 0
If r Is Nothing Then Exit Sub
iCol = r.Column
t = Now
Application.ScreenUpdating = False
With ActiveSheet
    Master = .Name
    LastRow = .Cells(Rows.Count, "R").End(xlUp).Row
    LastCol = .Cells(1, Columns.Count).End(xlToLeft).Column
    .Range(.Cells(2, 1), Cells(LastRow, LastCol)).Sort Key1:=Cells(2, iCol), Order1:=xlAscending, _
        Header:=xlGuess, OrderCustom:=1, MatchCase:=False, Orientation:=xlTopToBottom
    iStart = 2
    For i = 2 To LastRow
        If .Cells(i, iCol).Value <> .Cells(i + 1, iCol).Value Then
            iEnd = i
            Sheets.Add after:=Sheets(Sheets.Count)
            Set ws = ActiveSheet
            On Error Resume Next
            ws.Name = .Cells(iStart, iCol).Value
            On Error GoTo 0
            ws.Range(Cells(1, 1), Cells(1, LastCol)).Value = .Range(.Cells(1, 1), .Cells(1, LastCol)).Value
            .Range(.Cells(iStart, 1), .Cells(iEnd, LastCol)).Copy
            ws.Range("A2").PasteSpecial Paste:=xlPasteValues
            iStart = iEnd + 1
        End If
    Next i
End With