Forumlar / Cotonti / Localization / Weekdays in admin

I have just finished the Italian localization of Cotonti 0.6.5. and I am proofreading it. I noticed that the days of the week remain in the shorten English version in /admin.php.

Since I really don't remember to have translated them in this Cotonti 0.6.5. langpack (while I do remember them in Seditio and earlier version of Cotonti), I am wondering if they have been moved to the core.

In that case, our localizations will always have a flaw...