Is it possible to set the past date of the post? To some previous event.
closed as not a real question by toscho♦ Dec 27 '12 at 23:41
It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, see the FAQ.
In the Publish metabox, there is an option for Publish: which defaults to Immediately, click the edit link next to that and you can backdate your posts (or set them to publish in the future)