从RichTextBox获取特定字符串

Question

我试图从互联网上获取日期和时间，但我不知道如何做到这一点，谷歌的大部分代码都不适合我...，然后我试图从http://www.worldtimeserver.com/current_time_in_ID.aspx获取文档文本到RichTextBox这段代码：

    Private Function getPageSource(ByVal URL As String) As String
        Dim getWebClient As System.Net.WebClient = New System.Net.WebClient()
        Dim strSource As String = getWebClient.DownloadString(URL)
        getWebClient.Dispose()
        Return strSource
    End Function

RTBDateTime.Text = getPageSource("http://www.worldtimeserver.com/current_time_in_ID.aspx")

此块包含我所在位置的日期和时间：

<div class="desc" style="text-align: center">
               <span class="font7">
               4:08 PM 'this line (TIME)
               </span>
               <br>

               <span class="font6">
               Friday, November 28, 2014</span> 'and this line without "</span>" (DATE)
               <br>

               Waktu Indonesia Barat (West Indonesian Time) (WIB) +0700 UTC
               <br>
               <br>

               UTC/GMT is
               09:08
               on
               Friday, November 28, 2014 'or this line for DATE
               <br>
               <br>
  </div>

我希望得到“4:08 PM”和“2014年11月28日星期五”..我怎样才能实现这一目标？