[xixixao]

Also for non-slavic speakers' interest: “ne” is No, and “dělat" is Work, so Sunday is literally the day of "Nowork".

[mv4]

I am Russian, and you just blew my mind with that piece of info.

[p1esk]

Same! :)

[gpvos]

So, in Russia they don't work at all during the week? This explains so much.