I don't even need to go that far...
I have a CRT television that doesn't have past 2020 in its calendar. It simply wrapped around and started counting from the date of its production - 1990.
It had a VHS embedded on it, hence it needed a full-blown calendar for recording purposes. Well, the VHS part was already borked 3 years prior, so at least that part was correctly predicted, but the tube was - is - working just fine, with a cable set-top box that still have RCA output, from my cable company. Watching NETFLIX on 4:3 is interesting.
I found some issues on SOHO routers as well, altough I don't remember which ones... D-Link, I think. Likewise, these wrapped around and kept on chugging, wi-fi and all.