I was wondering just a while ago if it those diary syntaxes were really limited to sexps and wouldn't also evaluate arbitrary elisp and I saw this[1]: &%%(le

I was wondering just a while ago if it those diary syntaxes were really limited to sexps and wouldn't also evaluate arbitrary elisp and I saw this[1]: &%%(let ((dayname (calendar-day-of-week date)) (day (cadr date))) (or (and (= day 21) (memq dayname '(1 2 3 4 5))) (and (memq day '(19 20)) (= dayname 5))) ) Pay check deposited I don't know if this is doable from org-mode but it seems to me like this could be a viable, more readable alternative to diary-float. For your example of 2nd Thursday from every month, instead of: %%(dairy-float t 4 2) you could have: &%%(let ((day-of-week (calendar-day-name date)) (day (cadr date))) (and (= day-of-week "Thursday") (> day 7) (<= day 14))) That's seems more readable to someone that hasn't read what the parameters of dairy-float mean. For your second example of every 2nd and 4th Thursday: &%%(let ((day-of-week (calendar-day-name date)) (day (cadr date))) (and (= day-of-week "Thursday") (or (and (> day 7) (<= day 14)) (and (> day 21) (<= day 28))))) It being a programming language might make it unintuitive to use by a non-programmer, but I don't think you can get anymore flexible than this. Also, org-mode's attractiveness being that everything is in plain text, I'm not sure there is a syntax that would be more readable than properly written code. [1] https://www.gnu.org/software/emacs/manual/html_node/emacs/Sexp-Diary-Entries.html#Sexp-Diary-Entries https://www.gnu.org/software/emacs/manual/html_node/emacs/Se...