Think of them as coordinate markers for the 52 squares on the spread. I'll use my 9

first. It is the
Saturn card in the
Venus row. Column is the type of energy flowing
in; the row is the type of energy flowing
out of the specified square. So, I learn something and then want to share it with everyone- passionately!
Your 8

is the
Neptune card in the
Mars row. Visions/dreams flow into your Powerful Mind and are projected out with force & vigor.
ETA:

I counted backward to see which card actually had the 8

as its Jupiter card ~ ta-da! 6

and it is Dec 25th!
Mars card in the
Mars row - Father/Teacher's love flowing purely through.
Now those short sentence descriptions can also operate from a poor or negative use of the energies involved- sort of like a reversed card? But, I can't bring myself to focus on the down side this evening.