RPN83P: RPN calculator for TI-83+ TI-84+ inspired by HP-42S

[jthole]

(11-09-2024 05:50 PM)Liamtoh Resu Wrote:  ) I would like to see a DDAYS or DDAY function on the app. I would think that the
HP Prime notation (YYYY/MM/DA) could be implemented on the rpn83p.

DDAYS is there already: put two dates on the stack, and hit "-".