You can select a date when your post disappears from the newsfeed with the Schedule disappearance option.

From this date, the post will be visible only by you.

Note that it will not be deleted automatically. It will simply not be visible anymore. You’ll then be able to modify or delete it.

When in the message creator:

1. Check the Schedule Disappearance option.

2. Type or select the date you want to post.

3. Select the time you want your message to be posted.