Saturdaying
/ˈsatədeɪɪŋ/ /ˈsatədɪɪŋ/Russian History
noun
In the Soviet Union: the practice of working on a Saturday without pay for the benefit of the collective; a Saturday worked in this way.
Origin
1920s; earliest use found in The Manchester Guardian. From Saturday + -ing, after Russian subbotnik subbotnik.