One of the features that you might find useful with WordPress, is the delayed publish feature.
To do this, simply create your blog, but before you publish, click on “Edit” under the Publish area on the right.
It will then allow you to choose the date and even time that the post will “go live.”
This can be useful for embargoed information.
It can also be useful for a reminder post for an event. Perhaps you’ve written pre-story information on an event, but want your blog to remind people of the event on the day of. Just write the info up and set a publish time.