Scheduling feature for Publish button

If there was any way to be able to schedule site updates/changes to publish at a certain time, rather than immediately after clicking Publish, that would be really helpful. Currently, the save version is different from the live version -- you can save, log out, save, and those changes won't go live until you come and click publish. But to add a schedule function for publishing, rather than having to log in and click publish, would be an added bonus. As I'm sure you're aware, blogging platforms such as Wordpress have this feature. That way if you're unable to access your site for some reason to publish your content, but need content to go live by a certain day/time, you can use the schedule feature and know the content will be live when it's supposed to be. Corinne Litchfield