How can I get Persian date?

Question

If I open calendar and hit p p it shows me —by calling (calendar-persian-print-date)— the Persian date in minibuffer. How can I get Persian date without opening calendar? When I call (calendar-persian-print-date) directly, it says Debugger entered--Lisp error: (void-variable displayed-month).

Answer 1

You can use C-h f (describe-function)'s "completion" feature to discover function that you don't know yet, e.g., enter calendar-persian in the minibuffer then type TAB, it will show all functions with that prefix.

(calendar-persian-date-string)
     => "Xordad 10, 1396"

(calendar-persian-from-absolute
 (calendar-absolute-from-gregorian
  (calendar-current-date)))
     => (3 10 1396)