Yes this can be done using VBA and the workbook_beforesave event:
Right-click on the Excel icon (situated immediately on the left of the File
Menu), choose View Code and paste and amend accordingly the following code :
Private Sub Workbook_BeforeSave(ByVal SaveAsUI As Boolean, Cancel As
Boolean)
Worksheets("Feuil1").Range("A10").Value = Now
End Sub
This will put the date and time in A10 of sheet "Feuil1" each time a save
operation has been called from the workbook.
HTH
Cordially
Pascal