starbuck,
As mentioned, I don't think of one planet's properties in terms of the ENTIRE chart. There are chart patterns (entire chart), planetary patterns (certain planets in the chart), and individual planets (individual planets). The idea of "fate degree" is about a degree range from 29 degrees up to (but not including) 1 degree.
The idea is that those planets which are at the "edge" of their degree are strong energies in their own way. 29 degree energies (from 29 degrees up to but not including 0 degrees) are trying to "stay where they are" and not slip into the next sign. 0 degree energies (from 0 degrees up to but not including 1 degree) are trying to "move ahead" and not slip back into the previous sign. So a planet at 29 degrees Virgo is trying to express its Virgoness and resist its Libraeness (the next sign after Virgo). A planet at 0 degrees Libra is trying to be Libra and resist slipping back into Virgoness (the sign before Libra).
So in your example of 0.00 degrees and 0.56 degrees, I'd include them BOTH as 0 degrees. However, my goal in astrology is to always keep things simple, so I am certain many astrologers have all sorts of rules for how to handle decimal degrees!
Keeping it simple,
Tim