Retrieves the publication date and time of the feed.
[ lastPopulateDate = ] Feed.PubDate
lastPopulateDate Floating-point number that receives the date and time of publication.
The property is read-only. The property has no default value.
Publication date is an optional feed element. The value is
0if not specified in the source. A value of 0 is representative of the date "Sat Dec 30 00:00:00 PST 1899".
Note The date is adjusted for the local time zone.
This property also applies to feed items.