> the behavior of leap years at the end of a century (where they're skipped if a year is divisible by 100 unless it's divisible by 400) is not accounted for. T

> the behavior of leap years at the end of a century (where they're skipped if a year is divisible by 100 unless it's divisible by 400) is not accounted for. The article cites the original edition of POSIX from 1988. The bug in question was fixed in the 2001 edition: https://pubs.opengroup.org/onlinepubs/007904975/basedefs/xbd_chap04.html#tag_04_14 https://pubs.opengroup.org/onlinepubs/007904975/basedefs/xbd...