On Tue, Jan 25 2011, Francis Moreau wrote:

> What is important is 5 weeks, the rest becomes irrevelant. So it would
> be nice if we could round the elapsed time.

Good idea.

> BTW are there any ways to make such change in the group buffer ?

I use this, FWIW:

(setq gnus-user-date-format-alist
      '(((gnus-seconds-today) . "Today, %H:%M")
        ((+ 86400 (gnus-seconds-today)) . "Yesterday, %H:%M")
        (604800 . "%A %H:%M")     ; That's one week
        ((gnus-seconds-month) . "%A %d")
        ((gnus-seconds-year) . "%B %d")
        (t . "%B %d %Y")))       ; This one is used when no other does match

-- 
Julien Danjou
❱ http://julien.danjou.info