Eu fiz rpm -qfl /bin/date
e procurei na lista de arquivos por um
changelog, e encontrou /usr/share/doc/coreutils/NEWS
e o seguinte parágrafo:
- Noteworthy changes in release 7.4 (2009-05-07) [stable]
Bug fixes. date -d 'next mon', when run on a Monday, now prints the date 7 days in the future rather than the current day. Same for any other day-of-the-week name, when run on that same day of the week. [This bug appears to have been present in "the beginning". ]