@Nick That works! Thank you!

I used the below instead (learned that I needed to escape that comma).

#+DATE: {{{time(%b %d %Y\, %a)}}}

I had read about {{{date}}} but assumed that {{{time}}} does the same thing as {{{date}}} because they are put together with the same description. The documentation actually doesn't tell what {{{time}}} does: http://orgmode.org/manual/Macro-replacement.html

@John: Looks like I will not need any elisp hacks :)

--
Kaushal Modi

On Thu, Aug 6, 2015 at 2:18 PM, John Kitchin <jkitchin@andrew.cmu.edu> wrote:

I use a function like that here:
https://github.com/jkitchin/jmax/blob/master/techela/techela-grade.el#L182

and to set the filetag as you suggest you would call it like this:

#+BEGIN_SRC emacs-lisp
(gb-set-filetag "DATE" (format-time-string "%b %d %Y, %a" (current-time)))
#+END_SRC

You could put that in some hook function if you like.

Kaushal writes:

>> Why don't you just use a timestamp?
>
> But that would need me to insert the timestamp manually each time before
> exports
>
>> You can update whenever you want or using
>>    (org-insert-time-stamp (current-time))
>> at the right spot.
>
> Wouldn't that too need manual navigation to #+date: and then eval that
> elisp form?

--
Professor John Kitchin
Doherty Hall A207F
Department of Chemical Engineering
Carnegie Mellon University
Pittsburgh, PA 15213
412-268-7803
@johnkitchin
http://kitchingroup.cheme.cmu.edu