Weekdays and Months
I noticed my date shortcodes didn't work in the Today page. I needed to create manual ways to generate Russian and Chinese dates. While Chinese dates are extremely straightforward (number + month = name of the month, week + number = weekday), Russian dates require some work.
I read this Russian months' names and their etymology - Liden & Denz, and it is a good reference on the matter.
The same site has this nice list of weekdays and some additional info Days of the Week in Russian: Learning the Basics.