It must be a slow day.

Here's another way
Code:
Sub Macro1()
Dim oRng As Range
Set oRng = ActiveDocument.Range
oRng.Collapse 0
oRng.Text = vbCr & vbCr
With oRng.ParagraphFormat.Borders(wdBorderBottom)
.LineStyle = wdLineStyleSingle
.LineWidth = wdLineWidth225pt
End With
oRng.Collapse 0
oRng.Text = Format(Date, "dddd, MMMM d, yyyy") & vbCr & Format(Time, "h:mm am/pm")
lbl_Exit:
Set oRng = Nothing
Exit Sub
End Sub