You can specify a time – when a certain document should be published! wow!
I am not shure if Joomla can do that! (wordpress can do that too) 😀
in Typo3 you can set start and stop dates…
another nice feature are the in-build html validation services… that even allow you to validate your page on a test-server, that is not reachable from outside=the internet. (your source is file-uploaded)