private void UpdateAppointment()
{
var updatedAppointment = GetAppointmentFromFields();
var date = updatedAppointment.start;
updatedAppointment.appointmentId = appointmentAggregate.Id;
updatedAppointment.createDate = appointmentAggregate.CreateDate;
updatedAppointment.createdBy = appointmentAggregate.CreatedBy;
appointmentService.Update(updatedAppointment);
var reminder = reminderService.FindByAppointmentId(appointmentAggregate.Id);
reminder.reminderDate = date.AddMinutes(-5) < DateTime.Now ?
date.AddMinutes(-(updatedAppointment.start - DateTime.Now).TotalMinutes + 1)
: date.AddMinutes(-5);
reminderService.Update(reminder, reminder.reminderId);
}