License: I will check and fix it.
The calendar's usefulness: it wasn't actually my decision, but I think the tought behind this was that since there are so many countries with different backgrounds (different religious holidays, different days off in general), it wouldn't be realistic for us to create a version for each country (even among the Christian countries there are major differences). Therefore if you really need to print this, it might be a good idea to come up with a page that will be attached to each picture page and will have your country's particular holidays and intricacies. For example, like this:
http://www.timeanddate.com/calendar/create.html - I am not sure if there's a freely licensed version of this anywhere at the moment. I'll check what else we can do about this.
—Yan (Ynhockey).