But this resolves the 32-bit issue only, correct? I did end up compiling the latest version (27.0.50, as reported by 'emacs --version') cloned from git://git.savannah.gnu.org/emacs.git on a 64-bit system and (format-time-string "%a %b %d %H:%M:%S %Y GMT" 67768036191676800 t) still chokes with the "Specified time is not representable" error. As before, the same expression evaluates fine to "Wed Dec 31 23:59:59 2147485547 GMT" with the smaller number 67768036191676799 = 67768036191676800 - 1 On October 30, 2019 7:01:21 AM EDT, Lars Ingebrigtsen wrote: >Colin Baxter writes: > >> If it helps, I see no problem on the latest pull of emacs-27. I'm on >> Linux 3.16.0-10-686-pae #1 SMP Debian 3.16.74-1 (2019-09-24) i686 >> GNU/Linux. Screen-shot below. > >Yeah, if you have the latest pull, then you have my fix for this >problem. > >> Sorry to butt in. > >Butting in is what the bug tracker is for. :-) > >-- >(domestic pets only, the antidote for overdose, milk.) > bloggy blog: http://lars.ingebrigtsen.no -- Sent from my Android device with K-9 Mail. Please excuse my brevity.