I tried some themes; produced dates are in the form that is familiar for English/German/French/etc people (e.g Mar 12, 2016, or 12 Mar 2016, …).
Can generator convert Gregorian dates to another locale date for posts, specified somehow in config file?
There some libraries such as moment.js that gives devs possibility to have support for other cals in the core!
What’s Hugo approach?
Also, take a look at: