myfs_114879

Hi, I have a problem with finding my month pillar. My DOB is 04 October 1981. The books I've read mentioned that the month pillar is calculated with my lunar month which is the 9th lunar month for my case. This would give me ?? (Wu Shu) for my month pillar. From Internet programs, my month pillar is calculated as ???? (Ding You) for my month pillar, which corresponds to the 8th lunar month of year 1981. Which is correct? Any help would be appreciated. Thanks, Paul