RSS to google sitemap.xml conveter - using xslt

The below xslt will convert RSS to google sitemap.xml format.
Note:

This xslt will only work for rss which has the date format like “Wed, 25 Jan 2006 16:17:16 GMT”, for other formats please modify the xslt template.
You can upload this converted file to your blog(if supported) and point it to google sitemap.
Its seems like GoogleBot itself has some listener to keep updating the blog contents via feed fetcher
Pebble also got some blog listeners, hmm..but i yet have to learn it for better use.
This is not an automated one, you have update the sitemap file locally and upload it whenever the blog got updated.

——–rss2sitemap.xsl—————


<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" indent="yes"/>
<xsl:template match="/">
 <urlset xmlns="http://www.google.com/schemas/sitemap/0.84">
     <xsl:for-each select="rss/channel/item">
        <url>
        <loc><xsl:value-of select="link"/></loc>
        <lastmod><xsl:apply-templates select="pubDate"/></lastmod>
        <changefreq>weekly</changefreq>
       <priority>0.8</priority>
        </url>
     </xsl:for-each>
  </urlset>
</xsl:template>
<!-- Template to convert rss date format to ISO8601 date format(YYYY-MM-DD)
Sample input datetime:Wed, 25 Jan 2006 16:17:16 GMT
Sample output: 2006-01-25
For other format, please modify the below template
-->
<xsl:template match="pubDate">
 <xsl:variable name="rawMonth">
   <xsl:value-of select="substring(., 9, 3)"/>
  </xsl:variable>
  <xsl:variable name="isoMon">
   <xsl:choose>
    <xsl:when test="$rawMonth='Jan'">01</xsl:when>
   <xsl:when test="$rawMonth='Feb'">02</xsl:when>
   <xsl:when test="$rawMonth='Mar'">03</xsl:when>
   <xsl:when test="$rawMonth='Apr'">04</xsl:when>
   <xsl:when test="$rawMonth='May'">05</xsl:when>
   <xsl:when test="$rawMonth='Jun'">06</xsl:when>
   <xsl:when test="$rawMonth='Jul'">07</xsl:when>
   <xsl:when test="$rawMonth='Aug'">08</xsl:when>
   <xsl:when test="$rawMonth='Sep'">09</xsl:when>
   <xsl:when test="$rawMonth='Oct'">10</xsl:when>
   <xsl:when test="$rawMonth='Nov'">11</xsl:when>
   <xsl:when test="$rawMonth='Dec'">12</xsl:when>
  </xsl:choose>
 </xsl:variable>
<xsl:value-of select="concat(substring(., 13, 4),'-',$isoMon, '-', substring(., 6, 2))"/>
</xsl:template>
</xsl:stylesheet>