A feature on a Facebook page to publish a post with a date in the past.
Start creating your post at the top of your Page's TimelineClick drop
down arrow next to PublishSelect Backdate PostChoose the date and time
in the past that you want the post to be publishedClick BackdateWhen you
backdate a post, the post will be published immediately and appear in
the past on your Page's Timeline. You can also choose to hide the post
from News Feed.All times correspond to the current time zone you're in.
There is a new feature to set an expiration date for Video post on
Facebook's page. You'll need to allow expiring posts on your Page to
schedule an expiration date for a video. To allow expiring posts on your
Page:Click Settingsat the top of your PageClick Expiring PostsClick to
check the box next to Allow people who manage this Page to select a time
when posts unpublishClick Save ChangesTo schedule an expiration date for
a video on your Page:Add a video at the top of your Page's TimelineClick