What is the difference between <pubDate> and <lastBuildDate> in RSS?
I have the feeling, in every RSS.xml file, both the pubDate and the lastBuildDate match. I am sure that this one, is not always true... So firstly, what is the difference between those two above? Secondly, the RSS readers, sort the content by Date, based on the pubDate or the lastBuildDate? Gabriel Hurley pubDate: The original publication date for the channel or item. (optional) lastBuildDate: The most recent time the content of the channel was modified. (optional) Here are some docs for the optional items in the RSS 2.0 spec . Answers here are all over the place. Some people are getting