Thumb Calendar 2007
This is the 2007 edition.
UPDATE: See the 2008 EDITION
In my design, 1Q and 2Q are on one side, the rest of the year is on the other. The field of numbers is shared among the six months on each side. The header of each month is appropriately aligned to show the actual days of the week.
While keeping the size down to 8.4 by 5.5 cm (a common business card), the calendar (when used as shown below) still looks like a normal calendar and the size of the font can be as much as 11 pt.
Eliazar Cardenas later responded to Luis's and my efforts in his cool remix of our approaches.