Bypass User profile DATE

Hi,

Whatever be the date format in USer Profile, I want to bypass that and do the posting.

Let say when the profile is MM.DD.YYYY, My below logic works else fails ...

reversaldate0(4) = p_header-stodt6(4).

reversaldate4(2) = p_header-stodt3(2).

reversaldate6(2) = p_header-stodt0(2).

IS there any function module for this???

Thanks in advance.