Proper format for date in BlogPosting

Hi,

I am trying to add microdata to blog articles. As I understand the
google help page, it is recommended to put the date like this: 

Geschrieben am <time itemprop="dateCreated"
datetime="2011-10-18T16:47:00+02:00">18.10.2011 um 16:47</time> 

Now the bing parser doesn't recognize this at all, it drops the
dateCreated. If i change the element type to <span>, the human readable
value is recognized by both parsers, but not the machine readable part.

What is the recommended way to put a date in blog postings?

Thanks

Michael

-- 
Michael Below <below@judiz.de>

Received on Thursday, 31 May 2012 12:22:27 UTC