SQL & PL/SQL :: Eliminate Default Time 12:00 Am

I have a table with Date Field . While selecting the records its display like below format.

TO_CHAR(CHAR_DATE,'DD-MM-RRRRHH:MI:SSAM')

10-05-2012 12:00:00 AM
10-05-2012 03:26:16 PM

1 row doesnt have time, but in default it shows 12:00:00 AM, how to eliminate it. Display should be

10-05-2012
10-05-2012 03:26:16 PM

create table time_test (char_date date);

INSERT INTO TIME_TEST ( CHAR_DATE ) VALUES (
TO_Date( '05/10/2012', 'MM/DD/YYYY HH:MI:SS AM'));
INSERT INTO TIME_TEST ( CHAR_DATE ) VALUES (
TO_Date( '05/10/2012 03:26:16 PM', 'MM/DD/YYYY HH:MI:SS AM'));
COMMIT;

select TO_char(CHAR_DATE,'dd-mm-rrrr HH:MI:SS AM') from time_test;

i need in to_char only, im using it in reports