Cannot send auto email in codeigniter

PHP Code:

function test()
    {
        $this->load->model("Backup_model");
         if($this->Backup_model->testmail() === true){
             $now = date_default_timezone_set('Asia/Colombo'); // Set Time-Zone
             $now = date('H:i:A'); //Fomat Date and time
             $now = '20:28';

             if ($now === true){
                 $this->load->library('email');
                 $this->email->set_newline("\r\n");

                 $this->email->from('[email protected]', 'Sanjaya prasanna');
                 $this->email->to('[email protected]');
                 // $this->email->cc('[email protected]');
                 //$this->email->bcc('[email protected]');

                 $this->email->subject('New Requisition has been Arrived !');
                 $this->email->message("Test");

                 if($this->email->send())
                 {
                     // echo "Your Email Has Been Sent.";
                 }
                 else
                 {
                     show_error($this->email->print_debugger());
                     echo "Your Request not sent. Try again later";
                 }

             }
         }

    }

PHP Code:

function testmail()
    {
        $query = $this->db->query("SELECT * FROM birth_day WHERE month(date) = month(curdate()) and day(date) = day(curdate());");
        $email_data = $query->result_array();
        return $email_data;



    }