求助，时间如何转为数值对比！！

kuku818a

请教！！以下程序中，所得出的aa时间数值如何与输入的数值bb比较！？？？？？

Private Sub CommandButton1_Click()
aa = Format(Now(), "nnhh")
Sheet1.Range("A1") = aa
bb = aa + 11
Sheet1.Range("B1") = bb
cc = InputBox("请输入字符", "密码inputbox")
  Sheet1.Range("b2") = cc
If Sheet1.Range("b1") = Sheet1.Range("b2") = "ok" Then
Sheet1.Range("c1") = "ok"
Else
Sheet1.Range("c1") = "NG"
End If

End Sub