Use this page to verify that you're Date categories are Correctly categorized. The bold "category:" headings gives a link to each of the required categories (and a red link to edit the category). Below this is a preformatted box which shows the wiki text to place in the category, in order to properly categorize it. The checkbox next to each of these listings indicates whether or not the given categorization is there (check means it is). So when The whole list has checked boxes next to it, everything's all set.
