How to calculate bhavcopy pivot point?

#1
How to calculate bhavcopy pivot point?
i am using odin diet in integrated company in that software the pivot point showing are different they are not showing the regular pivot point i calculated and matched it. But it works to me very well then the regular pivot point. But I want to know how to calculate that type of pivot point manually which the software uses (bhavcopy pivot point). Help with this......:)