For changes to be reflected on a reminder, they will need to be applied the day before the appointment reminder is set to go out.

Example:

• The appointment is scheduled for Wednesday 3 p.m. and the reminder is scheduled to go out one day before the appointment
• The patient calls on Wednesday at 8 a.m. to reschedule the appointment

 Result:

• It is too late for the reminder to be rescheduled, since the message is queued at 11:59 p.m. of the previous day
• The patient will receive a reminder for the original scheduled time after 10 a.m.