If WordPress has a newly created pending post, when you publish it the timestamp on the post is set at the time of publishing. If you publish a post, then set the post status to pending, the timestamp does not update when you re-publish it. How does it know? And why does it matter?

Understanding what filters and actions do took me forever, ok, maybe not but longer than I’d care to admit at any rate. It wasn’t the fault of the resources I found, it was just that I couldn’t get my head around it. But one day, PING! I got it. Here is how I understand them.…