Meta data tag display date Tue May 22 12:14:18 CDT 2012 rather the in YYYY-MM-DD format

[Manu Garg]

Hi,

  We have a on our web page.

<meta name="gdate" content="2012-05-22"/>

when I look at the raw XML served from GSA I see the following format. 
<MT N="gsate" V="Tue May 22 12:14:18 CDT 2012"/>

any insight which this is happening. I would like this metatag to have the same format i.e in YYYY-MM-DD.

Any help will be appreciated.

Thanks
MG