I would say it's just a PPT table and has been filled in manually (because the formatting is inconsistant)
If a function or macro was used it would likely say 03 - Mar
NOT 3-Mar
If you know how to use a macro this will fill in a selected table with consequtive dates.
Code:
Sub fillTable()
Dim otbl As Table
Dim irow As Integer
Dim icol As Integer
Dim inc As Integer
On Error GoTo err
Set otbl = ActiveWindow.Selection.ShapeRange(1).Table
For irow = 2 To otbl.Rows.Count
For icol = 1 To otbl.Columns.Count
inc = inc + 1
With otbl.Cell(irow, icol).Shape.TextFrame2.TextRange
.Text = Format(Now + inc, "dd-mmm-yy")
.Font.Size = 12
End With
Next
Next
Exit Sub
err:
MsgBox "Have you got a TABLE selected?", vbCritical
End Sub