In current Ru_RU locale weekdays are abbreviated with some strange three-letter forms (Птн). It is not 
a common-use abbreviation in Russian. Correct forms are two-letter, with an optional dot after: (Пт[.])

-- 
           Summary: Ru_RU abbreviated weekdays are incorrect
           Product: glibc
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: localedata
        AssignedTo: libc-locales at sources dot redhat dot com
        ReportedBy: dwqwt3i02 at sneakemail dot com
                CC: glibc-bugs at sources dot redhat dot com


http://sourceware.org/bugzilla/show_bug.cgi?id=10873

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