Variable: display-time-24hr-format
display-time-24hr-format is a customizable variable defined in
time.el.gz.
Value
nil
Documentation
Non-nil indicates time should be displayed as hh:mm, 0 <= hh <= 23.
A value of nil means 1 <= hh <= 12, and an AM/PM suffix is used.
Source Code
;; Defined in /usr/src/emacs/lisp/time.el.gz
(defcustom display-time-24hr-format nil
"Non-nil indicates time should be displayed as hh:mm, 0 <= hh <= 23.
A value of nil means 1 <= hh <= 12, and an AM/PM suffix is used."
:type 'boolean)