Download and print out a 12-sided calendar in PDF format and you're sorted. If you have Acrobat writer, or have a track record as a long-time PDF user, you're well on your way to calendar independence. If you need European-sized paper, email me for a ream.
Hints for calendar on a rhombic dodecahedron:
- Print the calendar on regular A4 paper (80 g/m²).
- The rhobic calendar will not fit onto American letter paper.
- Divide each of the sheets into 4 pieces, one piece for each month.
- Fold each piece into a rhombic unit as shown below.