I'm not sure if this is the best place for this, however I've been experimenting with TiKZ for the last few months working on a circular calendar, somewhat inspired by the very nicehttp://anaptar.com/ and https://circular-calendar.com that are commercially available.
My approach has been a bit different, hence sharing this, I've used a UNIX shell script to parse relevant data and to generate the calendar dynamically - with reading data from .csv files for information being shown, then written this out to a text file for converting to PDF via tex2pdf.
The final calendar is attached, if you're interested in the code, plus the configuration data, you can grab it from here: https://drive.google.com/open?id=0B8pE3 ... lhGemRESHM
The code is free to use/modify/change but would appreciate that you give credit if you use it

I acknowledge that the way I've used the shell script to generate the tex file makes for pretty ugly code (and that my original shell script isn't perfect coding) but the result seems pretty reasonable.
Any comments or feedback much appreciated.
Regards
Rupert