appt-addappt-add is an interactive autoloaded Lisp function in `
appt.el'. (appt-add TIME MSG &optional WARNTIME) Add an appointment for today at TIME with message MSG. The time should be in either 24 hour format or am/pm format. Optional argument WARNTIME is an integer (or string) giving the number of minutes before the appointment at which to start warning. The default is `appt-message-warning-time'.