>>>>> In <87hdh06fzr.fsf@mat.ucm.es> Uwe Brauer wrote:

> I tried

> (add-hook 'gnus-article-mode-hook 'my-set-gnus-time)

> (defun my-set-gnus-time ()
> (interactive)
> (format-time-string
>  "%b %d, %Y %T"
>  (apply 'encode-time
> 	(parse-time-string
> 	 (mail-header-date gnus-current-headers)))))

> But that did not work out, what is my mistake?

The function only returns a string but it is never inserted or
displayed anywhere.  Furthermore, gnus-article-mode-hook is
evaluated only when the article buffer is created (Gnus keeps
using it for all articles as long as it is not deleted).

Well, while I don't know what you'd like to do, how about the
following?