How to get remaining months in a fiscal year in Oracle HRMS Payroll

PL-SQL Function below returns the number of months remaining in a fiscal year excluding current month.

CREATE OR REPLACE FUNCTION APPS.CUST_GET_MONTHS_REMAINING (P_DATE DATE ) RETURN NUMBER IS

/*

    PROGRAM ID      :   APPS.CUST_GET_MONTHS_REMAINING

    DESCRIPTION     :   RETURN MONTHS REMAINING TO END OF FISCAL YEAR.

   

*******************************************************************************************

*/  

 THIS_YEAR NUMBER;

 BEGIN

      

    IF TO_NUMBER(TO_CHAR(P_DATE,'MM')) > 6 AND TO_NUMBER(TO_CHAR(P_DATE,'MM')) < 12    THEN

        RETURN (12-TO_NUMBER(TO_CHAR(P_DATE,'MM')))+6;

    ELSE

        RETURN 6-TO_NUMBER(TO_CHAR(P_DATE,'MM'));

    END IF;

   

END;

/

How to get fiscal year start date in Oracle