This means the RSS Reader doesn't have a datetime to filter the feed with. The XML doesn't have to specify the datetime of each post.

In my experience, NOT ALL feeds are partial though. Unfortunately, I have not been able to find a universal solution for all feed sources. I've outlined an alternative solution without Wayback below. We can't hack the machine datetime to work around the datetime resolution because the current datetime is fetched live. The reader compares the current datetime with the RSS feed posts pubDate or lastBuildDate keys in the XML response. The reason why Wayback Machine feeds can be imported is that the reader can regularly poll the server for updates according to its defined TTL configuration.

Most RSS readers need to import feeds through a live URL, which makes things harder for sites that are unindexed on Wayback Machine. (So I'd be happy about hints to projects with similar ideas or purposes. It's though not much more than a proof of concept and I haven't developed it further. I call that concept a Semantic Feed Proxy and I've implemented a proof of concept implementation called sfp. from a data center instead from at home or on a server instead of a laptop) allows you to easily run the feedreader only then and when without loosing items which were posted after your feedreader fetched feeds the last time but rotated out again before you fetch them the next time. Having the proxy to fetch those feeds regularily (e.g. crashed or lost network connection while you are away for a few days, you might loose items in your feedreader's cache. If the feedreader doesn't poll feeds regularily, the proxy could fetch known feeds time-based on its own to not miss an item in highly volatile feeds like the one from User Friendly which has only one item and changes every day (or at least used to do so). There's though another, admittedly pro-active and rather theoretical way to do so: Let your feedreader use a caching proxy which semantically understands RSS and/or Atom feeds and caches them on a per-item base up to as many items as you configure. All previous answers more or less relied on existing services to still have a copy of that feed or the feed engine to be able to provide older items dynamically.

Weebly rss feed