For older Unix’s and Linux’s that kept track of time in a 32-bit integer counting seconds since January 1, 1970, time would run out in 2038.

    I have experimentally determined that I can set dates out to the year 2262 (but not 2263).  It appears signed 64-bit nanoseconds runs out in 2262 so that is probably what the current kernels are using.

     The old Eskimo.Com shell server will need to be retired by 2038 if it isn’t dust before that time since no updates to SunOS 4.1.4 are ever likely to be made available to resolve the time issue.