Y2K Bug is back, people that lived through that craze should remember. "Planes falling off the sky as soon as year 2000 strikes."
Well that didn't happen. But as soon as 2020 started Russian POS terminals stopped working. NY's parking meters stopped working. Even a game called "WWE 2K20" stopped working.
Reason is that people made a quick fix before 2000 that for two digit years, if the two digit year is <20 then it's 2000-2019. Otherwise it's still year 1900+. That way you can avoid changing database/form/report field size and still could have addressed the Y2K bug.
It's biting now.