pubdateattribute is a boolean attribute. If specified it indicates that the date and time given by the element is the publication date and time of the nearest ancestor
<article>element, or, if the element has no ancestor
<article>element, of the document as a whole." - WHATWG's HTML5 Draft Standard - http://whatwg.org/html5
pubdate is an attribute for the new
<time> element when it exists within the new
<article> element. It allows us to be even more precise when presenting the date and time of publication.
In this recipe we'll build on the new
<time> element from the last recipe and add the new optional
pubdate attribute to display our publication date.