system
A chat on subreddit /r/me_irl
human
We still use "Übermorgen" (overmorrow) and "Überübermorgen" (overovermorrow) in german.

Same with Vorgestern (beforeyesterday) and Vorvorgestern (beforebeforeyesterday)
gpt
same in netherlands/,dutch. very much alive terms used on a daily basis by everone here.