Re: The Possibility of Tropical Ages
Since this is so, and since the Sun dominates the place (Leo) following the summer solstice place (Cancer) for regions after 23N, it so happens that it to dominate the opposite place for regions after 23S, since it so happens that the it has great amount of heat at that time of the year for the Southern Hemisphere, with that particular declination. The places inbetween get an admixture of influences by declination, proportionally.
In 12/12, I'm using a Heliocentric cipher in place of climate to determine the Domicle-rulers of the 4 Cardinal-signs and Fixed-Fire. Before I knew about Ptolemy's explanation for rulerships, I correlated the ancient knowledge of the Heliocentric model (Aristarchus of Samos, around 250 B.C.E., and down through the Alexandrians) to the rulerships of indeterminate origins, prior to Ptolemy, with Heliocentrism. What "jumped out" immediately was, the Heliocentrically stationary (fixed in place, and fiery) Sun, ruling the Fixed-Fire sign.
The orbits of the Equinoctial rulers are equivalent and opposite relative to Earth's, as the "reference orbit" (adjacent+inside and outside), and the Solstial-rulers are nearest and farthest. I used the standard sequence of Modalities and Elements, beginning with the Sun ruling Fixed-Fire, to determine the Elemental assignments for the Cardinal-sign rulers. This worked out nicely, since that made Mars, with its reddish color, a Fire-sign ruler, and Venus with its brightness due to atmosphere, the Equinoctial Air-sign ruler.
The sequence of Modalities and Elements was more necessary for the Solsticial-sign rulers, for two reasons: Capricorn is directly linked to water, as the Goatfish; and, I read that Chronus/Saturn was a Sea-god prior to being replaced by Poseidon/Neptune; This made it impossible to distinguish Saturn's Elemental rulership from that of the Moon, which the Ancient Greeks knew ruled the tides. Also, "nearest" and "farthest" pertains to the Tropics, and which Tropic is nearest depends on in which Hemisphere one is situated, which is too relativistic. By beginning with the Sun ruling Leo as Fixed-Fire, the Cardinal-sign, Elemental rulerships were sorted out, with Cardinal-Earth Capricorn was assigned to Saturn by sequence.