Someone asked about this in a FB group and I thought this was an interesting reference (hadn’t come across it before)
Ra said:
"Use Design Birth Data for Astrocartography.
There is, obviously, something deeply important in that, but I think it's very specific to people who have undefined G Centers.
I think it's very difficult for undefined G Centers, particularly non-energy types, to figure out how to find out what is the right place for them.
The Astrocartography that was developed in Switzerland is fascinating.
One of the things that I've recommended to people is that the problem with Astrocartography is that it's based on the Personality.
If you really want to find out where your body is really aligned, send them your Design data as if that was your birth chart, just your design date and time.
Then you will actually get your Astrocartography for your physical vehicle and that is much more significant."