Code running slowly

Not sure why it runs slow. I thought the Application.ScreenUpdating =
False would do the trick.

Sub Holidays()

Application.ScreenUpdating = False

'New Years Day

With Sheets("January")

If Range("C4") = Range("R2") Then
Range("B27").Value = "New Years"
Range("B27").HorizontalAlignment = xlCenter
Range("B30").Value = "Day"
Range("B30").HorizontalAlignment = xlCenter
Range("A3").Select

ElseIf Range("B27") = "New Years" Then

Range("B27").Value = ""
Range("B27").HorizontalAlignment = xlLeft
Range("B27").IndentLevel = 1
Range("B30").Value = ""
Range("B30").HorizontalAlignment = xlLeft
Range("B30").IndentLevel = 1
Range("A3").Select

End If

If Range("E4") = Range("R2") Then
Range("D27").Value = "New Years"
Range("D27").HorizontalAlignment = xlCenter
Range("D30").Value = "Day"
Range("D30").HorizontalAlignment = xlCenter
Range("A3").Select

ElseIf Range("D27") = "New Years" Then

Range("D27").Value = ""
Range("D27").HorizontalAlignment = xlLeft
Range("D27").IndentLevel = 1
Range("D30").Value = ""
Range("D30").HorizontalAlignment = xlLeft
Range("D30").IndentLevel = 1
Range("A3").Select

End If

End With

Application.ScreenUpdating = True

End Sub