People who setup a post for future publication, and who work on the post for hours or days, may overlook the final step in scheduling a post. To create a scheduled post, there are 3 steps that are essential. Create and edit content. (D'Ohh!). Set "Schedule", with a future date / time selected. Press "Publish". If you spend hours or days repeatedly editing and Saving your changes, it's possible that the final step may elude you. And this may explain, to some folks, why their scheduled posts don't publish.
What Blogger won't tell you