I am a beginner in org-mode (and Emacs, for that matter), but I thought that org-mode would be a good place/format to store my contacts. One thing I like to do is to add birthdays to contacts. I found org-contacts.el, which appears to have what I want: I add a person in contacts.org and add a birthday property.
* Ficitive Person :PROPERTIES: :EMAIL: firstname.lastname@example.org :BIRTHDAY: 2000-09-24 :END:
Now in another file (agenda.org), I have the following:
* Birthday %%(org-contacts-anniversaries)
When I press
C-c a a (
M-x org-agenda-list), I see their birthday and how old they are, cool!
However, for some people I know their birthday, but not their age. Still I'd like to see that it is their birthday on my calendar, but when I enter a birthday in any other format, I get an error:
Bad sexp at line 24 in [...]/org/agenda.org: (org-contacts-anniversaries)
Is there a format for inserting birthdays without knowing the year?
Like I said, I am an emacs noob, so if there is another better way than org-contacts (or org-mode, for that matter) I am happy to learn that way.