convert from an integer to a date

When I run select to_date('20030212','YYYYMMDD') the output is 2/12/03
if I run select to_date( to_char(20030212,99999999),'YYYYMMDD'); the output is 6/23/05

How can I convert from integer into date format correctly?

Thanks for any help with this.

Svetlana

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