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select to_char(sysdate + 1 / (24 * 60),'yyyy/mm/dd hh24:mi:ss') from dual
SQL> ;
1 select to_char(sysdate, 'hh:mi:ss')
2 , to_char(sysdate + 1/60/24, 'hh:mi:ss')
3 , to_char(sysdate + 1/60/60/24, 'hh:mi:ss')
4* from dual
SQL> /
TO_CHAR(SYSDATE,'HH:MI:SS')
---------------------------------------------------------------------------
TO_CHAR(SYSDATE+1/60/24,'HH:MI:SS')
---------------------------------------------------------------------------
TO_CHAR(SYSDATE+1/60/60/24,'HH:MI:SS')
---------------------------------------------------------------------------
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