tzdata¹, used by glibc and others, does exactly this. And most of the linux and bsd -based dists have unbundled it from the libc packages to make it easier to keep up to date. (As an example, in Gentoo it is called sys-libs/timezone-data.)
That sounds like exactly the right thing for the Emacs calendar to consult. (Thanks.) But this should wait for after the release. _______________________________________________ emacs-pretest-bug mailing list emacs-pretest-bug@gnu.org http://lists.gnu.org/mailman/listinfo/emacs-pretest-bug