Variable: world-clock-time-format
world-clock-time-format is a customizable variable defined in
time.el.gz.
Value
"%A %d %B %R %Z"
Documentation
Time format for world-clock, see format-time-string.
This variable was added, or its default value changed, in Emacs 28.1.
Probably introduced at or before Emacs version 28.1.
Aliases
display-time-world-time-format (obsolete since 28.1)
Source Code
;; Defined in /usr/src/emacs/lisp/time.el.gz
(defcustom world-clock-time-format "%A %d %B %R %Z"
"Time format for `world-clock', see `format-time-string'."
:type 'string
:version "28.1")