Excel VBA OnTime Macro running multiple times

Question

I have a simple code that will copy the current value of my stock portfolio and paste it into a table. I recently tried to add in a timer so that it did this automatically every hour. It works, however, it pastes the value four or five times into the table. I searched around and I think this might be because it takes only a split second to run the macro and so it loops until a full second has passed.

Here's the code:

Sub AutoPL()
    Worksheets("Overview").Range("C15:D15").Copy
    Worksheets("Data").Cells(Rows.Count, 2).End(xlUp).Offset(1, 0).PasteSpecial                     xlPasteValues
    Application.CutCopyMode = False
    Call PLTimer
End Sub


Sub PLTimer()
    Application.OnTime Now + TimeValue("01:00:00"), "AutoPL"
End Sub

Answer 1

@mclapham I solved the freezing that you described in your comments by using Application.Wait Now + TimeValue("00:00:01") before calling Application.OnTime again.