How to find out Rman backup time in oracle 11g

SQL> SELECT * FROM (SELECT END.dt, 'Incremental' BACKUP, STAR.TIME started, END.TIME END,
DECODE(TRUNC(END.TIME - star.TIME), 0, NULL, TRUNC(END.TIME - star.TIME) || ' Days' || ' + ') ||
TO_CHAR(TO_DATE(TRUNC(MOD(END.TIME - star.TIME,1) * 86400), 'SSSSS'), 'HH24:MI:SS') TIME
FROM
(SELECT TRUNC(start_time) dt , MAX(COMPLETION_TIME) TIME FROM V$BACKUP_SET WHERE BACKUP_TYPE='I'
GROUP BY TRUNC(start_time)) END,
(SELECT TRUNC(start_time) dt, MIN(START_TIME) TIME FROM V$BACKUP_SET WHERE BACKUP_TYPE='I'
GROUP BY TRUNC(start_time)) STAR
WHERE END.dt = STAR.dt
UNION ALL
SELECT END.dt, 'Full Database' BACKUP, STAR.TIME started, END.TIME END,
DECODE(TRUNC(END.TIME - star.TIME), 0, NULL, TRUNC(END.TIME - star.TIME) || ' Days' || ' + ') ||
TO_CHAR(TO_DATE(TRUNC(MOD(END.TIME - star.TIME,1) * 86400), 'SSSSS'), 'HH24:MI:SS') TIME
FROM
(SELECT TRUNC(start_time) dt , MAX(COMPLETION_TIME) TIME FROM V$BACKUP_SET WHERE BACKUP_TYPE='D'
GROUP BY TRUNC(start_time)) END,
(SELECT TRUNC(start_time) dt, MIN(START_TIME) TIME FROM V$BACKUP_SET WHERE BACKUP_TYPE='D'
GROUP BY TRUNC(start_time)) STAR
WHERE END.dt = STAR.dt)
ORDER BY dt ASC;

DT        BACKUP        STARTED   END       TIME
--------- ------------- --------- --------- --------------------------------------------------------
18-FEB-15 Full Database 18-FEB-15 18-FEB-15 00:01:07
18-FEB-15 Incremental   18-FEB-15 18-FEB-15 00:00:16