Date Timezone Oracle PLSQL

SQL>
SQL>
SQL>  create table author_log(
  2      activity clob,
  3      completed date
  4    )
  5    /
Table created.
SQL>
SQL>
SQL>  insert into author_log values (
  2      'Began SQL Functions appendix',
  3      to_date( '04-NOV-2001 08:00', 'DD-MON-YYYY HH24:MI' )
  4    )
  5    /
1 row created.
SQL>
SQL> select * from author_log;
ACTIVITY                                                                         COMPLETED
-------------------------------------------------------------------------------- ---------
Began SQL Functions appendix                                                     04-NOV-01
1 row selected.
SQL>
SQL> drop table author_log;
Table dropped.
SQL>
SQL> --