The Browse archives box presents a calendar displaying the current month.
You can click on any date to display the items that were the most recent up to and including that date.
To browse different months, use the arrows to the left and right of the month name.
If you want to display all the news for a specific date but only in a specific category, add &meta=categoryname at the end of the URL.
We will be implementing a more user-friendly interface for this feature soon.