This bug report will be sent to the Bug-GNU-Emacs mailing list and the GNU bug tracker at debbugs.gnu.org. Please check that the From: line contains a valid email address. After a delay of up to one day, you should receive an acknowledgment at that address. Please write in English if possible, as the Emacs maintainers usually do not have translators for other languages. Please describe exactly what actions triggered the bug, and the precise symptoms of the bug. If you can, give a recipe starting from `emacs -Q': M-x calc vx 200 100 - '3650*24*3600 * vm t U (What I think I'm doing is creating a vector with 10 year increments, in seconds, and wanted to know if you honored, or don't honor, leap seconds. It appears to me that the answer is no. I'm just surprised to see the additional shift of an hour shift at 1630 - 1640 and 2199-2209. why?) ... <8:00pm Sun Mar 18, 1610>, <8:00pm Wed Mar 15, 1620>, <8:00pm Sat Mar 13, 1630>, <7:00pm Tue Mar 10, 1640>, <7:00pm Fri Mar 8, 1650>, <7:00pm Mon Mar 5, 1660>, ... <7:00pm Wed Nov 10, 2179>, <7:00pm Sat Nov 7, 2189>, <7:00pm Tue Nov 5, 2199>, <8:00pm Fri Nov 3, 2209>, <8:00pm Mon Nov 1, 2219>, <8:00pm Thu Oct 29, 2229>, ... My question was 'and does the conversion include leap seconds'. The answer appears to be 'no', but the 7pm/8pm conversions seem odd. Thanks If Emacs crashed, and you have the Emacs process in the gdb debugger, please include the output from the following gdb commands: `bt full' and `xbacktrace'. For information about debugging Emacs, please read the file /usr/local/share/emacs/24.3/etc/DEBUG. In GNU Emacs 24.3.1 (i686-pc-linux-gnu, GTK+ Version 2.24.22) of 2014-02-02 on fc19-home Windowing system distributor `Fedora Project', version 11.0.11404000 System Description: Fedora release 19 (Schrödinger's Cat) Configured using: `configure '--with-xpm=no' '--with-jpeg=no' '--with-gif=no' '--with-tiff=no'' Important settings: value of $LANG: en_US.utf8 value of $XMODIFIERS: @im=ibus locale-coding-system: utf-8-unix default enable-multibyte-characters: t Major mode: Fundamental Minor modes in effect: display-time-mode: t tooltip-mode: t mouse-wheel-mode: t tool-bar-mode: t menu-bar-mode: t file-name-shadow-mode: t global-font-lock-mode: t blink-cursor-mode: t auto-composition-mode: t auto-encryption-mode: t auto-compression-mode: t buffer-read-only: t line-number-mode: t transient-mark-mode: t Recent input: x c a C-g x r e p o r t SPC b u SPC Recent messages: For information about GNU Emacs and the GNU system, type C-h C-a. Quit Load-path shadows: None found. Features: (shadow sort gnus-util mail-extr emacsbug message format-spec rfc822 mml easymenu mml-sec mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums mm-util mail-prsvr mail-utils time time-date tooltip ediff-hook vc-hooks lisp-float-type mwheel x-win x-dnd tool-bar dnd fontset image regexp-opt fringe tabulated-list newcomment lisp-mode register page menu-bar rfn-eshadow timer select scroll-bar mouse jit-lock font-lock syntax facemenu font-core frame cham georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao korean japanese hebrew greek romanian slovak czech european ethiopic indian cyrillic chinese case-table epa-hook jka-cmpr-hook help simple abbrev minibuffer loaddefs button faces cus-face macroexp files text-properties overlay sha1 md5 base64 format env code-pages mule custom widget hashtable-print-readable backquote make-network-process dynamic-setting system-font-setting font-render-setting move-toolbar gtk x-toolkit x multi-tty emacs)