Gets the most recent download time for all feed items.
[ lastItemDownloadTime = ] Feed.LastItemDownloadTime
lastItemDownloadTime Floating-point number that receives the date and time of the item most recently downloaded.
The property is read-only. The property has no default value.
The retrieved time is adjusted for the local time zone.
If there are no items in the feed, the retrieved value is 0, which represents the date and time
"Sat Dec 30 00:00:00 PST 1899".