2009 calendar by a small design study in Brazil called Nu. It’s screenprinted on a 0.70 mm thick polypropylene sized at A1.
In portuguese, all days of the week, except for Saturday and Sunday, are referred to by numbers. Monday is Second, Tuesday is Third, etc.
The generous guys at Nu sent me a copy of each and they’re gorgeous up close.
You can check out the black version on my Flickr page.