Using oracle DB to find on which day of the week you were born? :-)

To find out which day of the week a specific event was on, you can use the database, see example below:

SQL> alter session set nls_date_format='day dd-mon-yyyy';

Session altered.

SQL> select to_date('31-mar-1979','dd-mon-yyyy') from dual;

TO_DATE('31-MAR-1979'

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saturday  31-mar-1979