Date Timezone Oracle PLSQL

SQL>
SQL> --  Experimenting with MONTHS_BETWEEN.
SQL> SELECT MONTHS_BETWEEN('25-DEC-97','02-JUN-97') "Fractional", MONTHS_BETWEEN('02-FEB-97','02-JUN-97') "Integer" from DUAL;
Fractional    Integer
---------- ----------
6.74193548         -4
SQL>