[xsl] Is there any way to identify the date format ?

[jayashree venkatesh <jaya.venk@xxxxxxxxx>]

Hello,
   
      I am a newbie to XSL . I have 2 XML feeds which have a pubdate
tag having different date formats . One uses the standard RFC 822 format and
the other non RFC 822 format.

1 st feed 
-----------------
<pubDate>Mon, 07 Jan 2008 15:24:04 -0600</pubDate>    (RFC 822) 

2 nd feed 
--------------------
<pubDate>March 7, 2007</pubDate>

I
want to convert both these date formats to ISO 8601 format.The point is
i want to do this in a single XSL file . I know there are substring()
and concat() functions which can help me achieve this. Now my question
is, how can I identify which format the date is ( 1st format or 2 nd )
in the first place ? If i can identify which format the date is in, I
can covert them to ISO 8601 format.

Thanks in
 advance,
Jayashree Venkatesh



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