Hermetic Astrology on other planets

[Fred Brackin]

Originally Posted by Whitewings

L the significant dates of the constellations would change, since Mars' orbit is different..

If Hermetic Astrology is more astronomically accurate than popular astrology. This would be so. However, I believe the stars in popular astrology "froze" in place when the traditional charts were drawn up and I've heard that astronomical factors since then make the actual constellation of any Sign abot a month off.

Since Mars' year is 687 days (presumably Earth-days, Mars days are 43 minutes longer) a Decan that's 10.14 days long on Earth would be 19.11 days on Mars. Which Decan would probably be trickier and brings up that "literal stars position"question.