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The Epochalypse: It’s Y2K, But 38 Years Later
(hackaday.com)
This is a most excellent place for technology news and articles.
It only depends whether the app and its OS/kernel interface use a 32-bit value to store the time information.
32-bit architecture or OS has nothing to do with this bug, for example 16-bit architectures must've used 32-bit time, too (otherwise they'd be able to only count up to 32-65 seconds).