Hermetic Astrology on other planets

[Phantasm]

Originally Posted by Fred Brackin

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.

Pretty sure the constellations themselves would be the same on Mars; it'd get trickier with interstellar travel rather than interplanetary.

That said, you lack both Mars and the Moon in the sky for the "classical" planets; and have to deal with Earth making its own path through the zodiac and the paths of Phobos and Deimos in the sky. Things to look into.