Facebook has at last launched the ability for Facebook page admins to schedule posts on their pages. God knows what took them so long. This has been a feature which has made software like Hootsuite more favourable because it allowed you to schedule posts. Granted Hootsuite does have some more options, most people will be happy to leave it behind and just use Facebook's own new scheduling feature.
How To Schedule Posts on Facebook Page
Facebook themselves have actually posted on how to do it, so instead of just creating a whole new tutorial, I've taken a screenshot of it and place it below.