Variable: org-agenda-format-date
org-agenda-format-date is a customizable variable defined in
org-agenda.el.gz.
Value
org-agenda-format-date-aligned
Documentation
Format string for displaying dates in the agenda.
Used by the daily/weekly agenda. This should be a format string
understood by format-time-string, or a function returning the
formatted date as a string. The function must take a single
argument, a calendar-style date list like (month day year).
Source Code
;; Defined in /usr/src/emacs/lisp/org/org-agenda.el.gz
(defcustom org-agenda-format-date 'org-agenda-format-date-aligned
"Format string for displaying dates in the agenda.
Used by the daily/weekly agenda. This should be a format string
understood by `format-time-string', or a function returning the
formatted date as a string. The function must take a single
argument, a calendar-style date list like (month day year)."
:group 'org-agenda-daily/weekly
:type '(choice
(string :tag "Format string")
(function :tag "Function")))