Sub Essai()
Dim TEntré(), L As Integer, D As Double, TSorti() As String
TEntré = ThisWorkbook.Sheets(1).Range("A1:A8").Value
ReDim TSorti(1 To UBound(TEntré, 1))
For L = 1 To UBound(TEntré, 1)
D = TEntré(L, 1)
TSorti(L) = Format(D, "dd/mm/yyyy hh:mm") & ":" & Format((D * 1440 - Int(D * 1440)) * 60, "00.000")
Next L
MsgBox Join(TSorti, vbLf)
End Sub