Ralf Hilgenstock from DIALOGE Beratungsgesellschaft has been kind enough to translate Calendar in German (both flavors, de and de_du, even though I admit I didn't even know there were two German translations 
) and send me the translations.
Due to personal issues I won't be able to add them in CVS until Tuesday, but I wanted to let everyone know.
Thanks very much, Ralf!
Jon
Hi Jon,
in German we have two language versions.
The de-Version is the normal text. We call it "Sie". It is a little unpersonally and the business form.
The de_du version is personally and most used at schools.
I send you the files directly, because I couldn't find the calnder files in CVS. If Martin adds the calender files in the moodle cvs directories I can add the german language files to the cvs.
Hi Ralf,
I did study German for a few years myself, so now that you explained it I understood!
It's just that due to my programming background, I assumed that _du was a language code of some sort... LOL! 
You had to say "Sie" to make it clear. 
Jon
Hi Jon, this is a good idea to change the german language order in moodle to de_sie. The names "de" and "de_du" are made by Martin.
Martin, do you think it is a great problem for all the users to change the name "de" to "de_sie" for all the german user working with moodle?