Re: using header data in document

[Eric S Fraga]

On Wednesday, 16 Sep 2020 at 17:18, Emanuel Berg via "General discussions about 
Org-mode." wrote:
> {{{date()}}} works as does {{{date(%D)}}} in a sense,
> only the format string doesn't seem to influence the
> output, which is "September 16, 2020".

The documentation that you have in your post says that this works only
if the actual date given in the #+DATE directive is a single
timestamp.  So, what did you specify there?  If you give a time stamp,
like [2020-09-16 Wed], it works fine for me.  If you have something
else, e.g. September 16, 2020, the format string is ignored.

In any case, you may wish to use the {{{time(FORMAT)}}} macro instead as
this does not depend on the date you have specified explicitly. And, in
practice, I actually use {{{modification-time(FORMAT)}}}.  In both of
these cases, you need to specify the format.

-- 
: Eric S Fraga via Emacs 28.0.50, Org release_9.3.7-725-g7bc18e