Installation: To use `german-holidays' exclusively (setq calendar-holidays holiday-german-holidays) To use 'german-holidays' additionally (setq calendar-holidays (append calendar-holidays holiday-german-holidays)) If you'd like to show holidays for Rhineland Palatinate only, you can use (setq calendar-holidays holiday-german-RP-holidays) This works for for all states: `holiday-german-BW-holidays' `holiday-german-HE-holidays' `holiday-german-HH-holidays' etc. ; Credits inspired by https://github.com/abo-abo/netherlands-holidays