On Monday,  6 Feb 2017 at 09:35, Uwe Brauer wrote:
> Hello
>
> When I use org-time-stamp. I obtain:
>
>  <2016-11-15 mar>
>
> mar is short for martes, which is the Spanish word for Tuesday. How can
> I can change that format, to any language I desire? I thought it would
> be calendar-day-name-array but this seems not to be the case.

I think you'll find that these come from the standard time format, using
%a for day of the week.  This will depend on your locale I guess?

-- 
: Eric S Fraga (0xFFFCF67D), Emacs 26.0.50.1, Org release_9.0.4-242-g2c27b8