@tychotithonus Having lived in IT in that era, there was a lot of stuff we discovered having "funny" issues. A lot of the more critical stuff got fixed just in time. Apparently a lot of coders had used the year "00" as some kind of a special meaning, like marking stuff being disabled if the year was zeroes or the time was after 31st of December 1999.

Some of that legacy lives on, like JavaScript's year changed from "year" to "years since 1900", it giving a 3 number value of 124 for today.