So tonite I found out about chrony on f16, so I went to the chrony home page. Looks like it's from the 1990's, not a date to be found on the home page. Am I wasting my time reading this stuff or did google help me find an obsolete page? After drilling down a couple levels I finally found a dated page letting me know this was in fact current information.
Most CMS and document publishing systems automatically date stamp pages, it's like these linux (mostly) documentation writers (I use the term loosely) go out of their way to remove any reference of when they wrote something. My gess is they do this so no one will know the docs are outdated and they won't have to work on them again