miscalendar

Etymology

From mis- + calendar.

miscalendar means to enter an appointment on the wrong date in a schedule. Lexicurio rates it Sui generis — a strength score of 87 out of 100.

verb

To enter an appointment on the wrong date in a schedule.“Occasionally , counsel will miscalendar or simply forget about attending a judicial arbitration hearing ( Code of Civil Procedure $ 1141.10. ) and an adverse judgment occurs.”
To assign the wrong date to a document.“Apparently a reference to the death of Charles II led the 6th baron Monson to miscalendar these letters .”