def reservation_reminder_24hrs(self):
        """
        This method is for scheduler
        every 1day scheduler will call this method to
        find all tomorrow's reservations.
        ----------------------------------------------
        @param self: The object pointer
        @return: send a mail
        """
        now_str = time.strftime(dt)
        now_date = datetime.strptime(now_str, dt)
        ir_model_data = self.env['ir.model.data']
        template_id = (ir_model_data.get_object_reference
                       ('hotel_reservation',
                        'mail_template_reservation_reminder_24hrs')[1])
        template_rec = self.env['mail.template'].browse(template_id)
        for reserv_rec in self.search([]):
            checkin_date = (datetime.strptime(reserv_rec.checkin, dt))
            difference = relativedelta(now_date, checkin_date)
            if(difference.days == -1 and reserv_rec.partner_id.email and
               reserv_rec.state == 'confirm'):
                template_rec.send_mail(reserv_rec.id, force_send=True)
        return True