Blogger Annoyance

As you can see with the "Milestone" entry, it is labeled Saturday, August 30. If you are reading this on Friday the 29th...obviously this is not Saturday. I was creating the "Milestone" post for Saturday and accidentally "published" it before I entered the preference to have it post on Saturday morning. I tried to go back and change it to Saturday and it only changed the date. Can someone let me know how you "un-publish" something without deleting it? So annoying...