oracle 日期转换 CST

SELECT to_date(REPLACE('Thu Oct 29 00:00:00 CST 2015', 'CST', ''),'dy mon dd hh24:mi:ss yyyy') from dual;

SELECT to_date(REPLACE('Thu Oct 29 00:00:00 CST 2015', 'CST', ''),'dy mon dd hh24:mi:ss yyyy','NLS_DATE_LANGUAGE = American') from dual