I'm trying to understand how the signs of the Western Zodiac are supposed to work. Here's where I need clarification:
The IAU gives a 'solar stay' amount of days for a sign, ranging from 8.4 to 44.5. Tropical and Sidereal give each sign around 30 days each. I'm trying to figure out why there's a discrepancy. I'm also trying to figure out how the latter (traditional) signs are supposed to be determined. I mean wouldn't more than one sign actually be in the sky at a time?