Strictly speaking the Ides of September would be the 13th of September. Mind you back when Ides of a month were a thing, instead of a poshnik making a Nancy-boy reference to Shakespeare's 19th Play, September would have been the seventh month of the Roman Year.
nik of course is a Slavic suffix. And while there are some who might not believe me when I offer poshnik to a dictionary, you will find that the more formal definition of the word poshnik has so far been recorded thusly : "In internet culture, a poshnik refers to someone who is obsessed with luxury, high fashion, or acting overly upper-class."
On the other hand a Gopnik, apparently, is a well-known slang term for lower-class, tie wearing street hoodlums found wandering around in one of the USA's major political parties. And we all know what a lipnik is.
Oh yes, the internet of sixth formers, or sixth graders, as they broach the realities of meaning, like everyone else spend long useless years beating their heads against brick walls and whining like puppies, their hopeful little faces desperate for an expression that will impress the court.