From mboxrd@z Thu Jan  1 00:00:00 1970
From: Giovanni Ridolfi <giovanni.ridolfi@yahoo.it>
Subject: Re: "Last workday of month" scheduling
Date: Fri, 15 Oct 2010 15:39:19 +0200
Message-ID: <83k4ljini0.fsf@yahoo.it>
References: <AANLkTimTo1n_2fiVxtNikL8-y1DzRmZacb6ftaO_RbYf@mail.gmail.com>
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To: Gustav =?utf-8?Q?Wikstr=C3=B6m?= <gustav.erik@gmail.com>
Cc: emacs-orgmode@gnu.org

Gustav Wikstr=C3=B6m <gustav.erik@gmail.com> writes:

Hi Gustav,=20
> Is there a way in Org-mode to schedule a task so it appears the last
> workday (i.e. not Saturday or Sunday) of the month, each month?

Yes, with a sexp diary entry

** a task
   SCHEDULED: <%%(diary-float [some-function])>

To find how [some-function] could be written,
you can be inspired by the one in Emacs manual:

38.15.9 Sexp Entries and the Fancy Diary Display

 Suppose you get paid on the 21st of the month if it is a weekday, and
on the Friday before if the 21st is on a weekend.  Here is how to write
a sexp diary entry that matches those dates:

     &%%(let ((dayname (calendar-day-of-week date))
              (day (cadr date)))
           (or (and (=3D day 21) (memq dayname '(1 2 3 4 5)))
               (and (memq day '(19 20)) (=3D dayname 5)))
              ) Pay check deposited

Giovanni