HISTORY_EVENT TO_CHAR(TIME_ID,'DD-
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           21 31-DEC-2000
           22 31-OCT-2000
           23 01-FEB-2000
           24 27-MAR-2000
           25 31-MAR-2000
           26 15-APR-2000
           27 02-SEP-2000
           28 12-AUG-2000