How to create dbms job that runs on weekdays(Mon-Fri) at 5:30 AM

I want to create dbms job using DBMS_JOB.SUBMIT package that runs on weekdays(Mon-Fri) at 5:30 AM. I am not sure what values should be passed in next_Day and interval Can anyone please help?

First we need to create one user defined function as following :-

CREATE OR REPLACE FUNCTION GET_DATE RETURN DATE
is 

V_DAY VARCHAR2(10);
V_DATE DATE;

BEGIN

SELECT (to_char(sysdate,'fmDay')) INTO V_DAY FROM DUAL;

IF(V_DAY='Monday' OR V_DAY='Tuesday' OR V_DAY='Wednesday' OR V_DAY='Thursday') THEN


SELECT trunc(sysdate+1)+05/24+30/1440 INTO V_DATE FROM DUAL;
RETURN V_DATE;

ELSE

SELECT trunc(sysdate+3)+05/24+30/1440 INTO V_DATE FROM DUAL;
RETURN V_DATE;

END IF;

END;
/

After that we need to create job in the following way :-

DECLARE
  XYZ NUMBER;
BEGIN
  SYS.DBMS_JOB.SUBMIT
  ( job       => XYZ 
   ,what      => 'BEGIN PROC_NAME; END;'
   ,next_date => to_date('23/03/2017 05:30:00','dd/mm/yyyy hh24:mi:ss')
   ,interval  => 'GET_DATE'
   ,no_parse  => FALSE
  );

END;
/