Nevertheless, only 1 star because of the structure of the calendar is not even approximately thoughtfully. In all 12 booklets composed half of each calendar from the usual filling plant, such as size tables, temperature scales, codes, etc .. For this you would have because of me can make a 13 book, but not every time on New's. The actual calendar is only going halfway through the booklet - better would have been to build the calendar 2-sided - ie each a double-page spread for a day - so the books would have been as thick, but overall useful. What is also missing is a ribbon, so you always have a piece of paper in place of the current day place.
The utilization rate of "zero" star.