Variable: diary-abbreviated-year-flag

diary-abbreviated-year-flag is a customizable variable defined in diary-lib.el.gz.

Value

t

Documentation

Interpret a two-digit year DD in a diary entry as either 19DD or 20DD.

This applies to the Gregorian, Hebrew, Islamic, and Bahá’í calendars. When the current century is added to a two-digit year, if the result is more than 50 years in the future, the previous century is assumed. If the result is more than 50 years in the past, the next century is assumed. If this variable is nil, years must be written in full.

Source Code

;; Defined in /usr/src/emacs/lisp/calendar/diary-lib.el.gz
(defcustom diary-abbreviated-year-flag t
  "Interpret a two-digit year DD in a diary entry as either 19DD or 20DD.
This applies to the Gregorian, Hebrew, Islamic, and Bahá’í calendars.
When the current century is added to a two-digit year, if the result
is more than 50 years in the future, the previous century is assumed.
If the result is more than 50 years in the past, the next century is assumed.
If this variable is nil, years must be written in full."
  :type 'boolean
  :group 'diary)