The date format under the reputation graph in the user profile doesn't reflect national standards (to see the text with year you need to select date range on the lower bar, i.e. not a current year; and then select the day/bar on the top graph):
фев 14 '17 should be at least
14 фев '17 on Stack Overflow in Russian. The correct format is already used in the textual representation of reputation on subtabs "Post" or "Time" on the Reputation tab of the profile page. As described on related question:
BTW take a look at related bug report on ruSO.Meta about date format of the moderator election block on the right side of the page.