To be published, a Wikinews article must still be fresh when it passes review. Leave as much time as possible for everything that has to happen within that freshness window. Even if your article were flawless (unlikely even for experienced Wikinewsies), there might not be a reviewer available at the moment you submit the article for review; an article peer-review is a big job, and —never forget— Wikinews reviewers are volunteers too!
An article is typically considered stale 2–3 days after the news event occurred.
The two most common exceptions are
new information has come to light within 2–3 days, and the news event occurred within 7 days.
Just because a source article has a later date, needn't mean the information in it is new on that date.
If the information really is new, it may mark a fresh news event to focus on, obviating this exception.
original reporting adds significant new, newsworthy information to the article.
Original reporting is an advanced technique, discussed under the next step of the wizard.