https://en.wikipedia.org/wiki/Year_2000_problem
https://en.wikipedia.org/wiki/Year_2011_problem
https://en.wikipedia.org/wiki/Year_2038_problem
See https://www.zdnet.com/article/linux-is-ready-for-the-end-of-...
Might be wise to migrate to a file system that uses 64 bit timestamps though if you have disks formatted with ext3.
https://en.wikipedia.org/wiki/Year_2000_problem
https://en.wikipedia.org/wiki/Year_2011_problem
https://en.wikipedia.org/wiki/Year_2038_problem