@tychotithonus @robertatcara Agreed. It was many thousands of IT folks working years to make sure it was no big deal. My company had hundreds of systems to triage, some 40+ yrs old: it's fine, minor or major fix, or replace the whole thing. I think all that slipped through was cosmetic.
Fast fwd 10 years, I'm managing a new team and I ask the tech lead of a very old, very high volume realtime system if the decade rollover would be an issue. No, it's all good, they said. 3am, my phone rings...