Explanation:
While performing point-in-time recovery of the database, you must specify time in the format YYYY-MM-DD:HH24:MI:SS. For example, if recovery needs to be performed until January 31, 2003 at 10:41 a.m., you must execute the following command:

 SQL> RECOVER DATABASE USING BACKUP CONTROL FILE UNTIL TIME ‘2003-01- 31:10:41:00’; 

Reference:
Oracle 9i Net Services Administrator’s Guide
Oracle 9i Net Services Reference Guide
Oracle 9i Recovery Manager Reference
Oracle 9i Backup and Recovery Concepts

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