Incorrect days of the week in ru_UA locale

[Maciej W. Rozycki]

On Thu, 3 Oct 2019, Rafal Luzynski wrote:

> $ LANG=pl_PL.utf8 date
> czw, 3 paź 2019, 00:00:31 CEST
> 
> Do I understand correctly that "tor" is correct here?  If yes,
> it is OK, I am not an expert at your language. :-)
> 
> I would say that Polish "czw" is not correct.  Indeed, normally
> we write weekday names (and month names) lowercase but as this is
> the beginning of a sentence the uppercase first letter would be
> better.  For the same reason I think that Russian "Чт" is correct
> even if CLDR says otherwise.

 Hmm, can a timestamp be considered a sentence or a nominal sentence?

 Moreover, is the use of three letters as the abbreviation correct in the 
first place regardless of its capitalisation?  Common usage as in printed 
calendars for the days of the week in Polish has been (starting from Mon): 
Pn, Wt, Åšr, Cz, Pt, So, N (capitalised) and what we have in locale appears 
pretty arbitrary to me, e.g. "nie" does not appear defined by any language 
standard, with "niedz." or "nd." (with a full stop necessarily included) 
being the acceptable abbreviations in written text other than calendars.

 Maybe I'm missing something, but I have always found the representation 
of time stamps in our Polish locale disturbingly odd (and, alas, I do not 
use it).

 FWIW,

  Maciej