Re: calculate weekday of birthday

[Nick Dokos <ndokos@gmail.com>]

Salome Soedergran <salome.soedergran@gmx.ch> writes:

> Hi everybody
>
> How can I make orgmode to give me the weekday of a specific date?
> I have a list (org-table) with students' names and dates of birth that looks like this:
> |------+-----------+------+-------+-----+-----+---------|
> | Name | Firstname | year | month | day | age | weekday |
> |------+-----------+------+-------+-----+-----+---------|
> | Doe  | John      | 2001 |    05 |  21 |  16 |         |
> |------+-----------+------+-------+-----+-----+---------|
>
> #+TBLFM: @2$8..@>$6='(+ (- 2017 $5) (if(> $4 7) 0 1));L::
>
> I have a formula to make orgtable calculate the age the student
> reaches in the current academic year (Aug-July) but I don't know how
> to get the birthday's weekday in the current year. Can anybody help
> me? Thanks a lot in advance!
>
> Best, Salome
>
>

,----
| org-day-of-week is a compiled Lisp function in
| ‘../org-mode/lisp/org-clock.el’.
| 
| (org-day-of-week DAY MONTH YEAR)
| 
| Returns the day of the week as an integer.
`----
You'll have to translate that into a name:

0 = Sunday
...
6 = Saturday

I believe.

-- 
Nick