Public Sub AjouterJour()
Dim D As Date
'Copie de l'avant dernier onglet
Sheets(Worksheets.Count - 1).Copy After:=Sheets(Worksheets.Count - 1)
With ActiveSheet
D = .Range("I1").Value + 1
If Weekday(D, vbMonday) = 6 Then D = D + 2
.Range("I1").Value = D
'Nom de la Feuille
.Name = Format(D, "DDDD d mmm YYYY")
End With
End Sub