Voron
From a previous post
Actually, there are valid arguments for the inclusion of cusps, but not what many people think. The Sun and the Moon are each roughly 30 arcminutes (1/2 a degree) wide. The Sun moves approximately 1 degree a day, the Moon, an average of about a degree every 2 hours (but it varies). So there exists a roughly 12 hour period where the Sun is *physically* straddling the imaginary line between the signs, and about an hour when the Moon is physically between two signs. (From about 29 deg 45' in one sign to about 00 deg 15' in the other.)
Now, we could get all technical, and use trigonometry and calculate what percentage of the disc of the Sun or Moon is in each sign, and we would find that the percentage is very low unless one is very clode to the dividing line. I think this is valid, as it follows visual symbolic logic ("as above, so below"), but is kindof overkill.
Now there's one school of thought that thinks that when the mid-point of the Luminary in question crosses the line there's a "quantum leap" to the next signs energy -- the other side would say it's a gradual shifting of energies when the planet is physically in both signs. In the situations I've seen, for clients who are *very* close to the border where I have to go with my observations -- that cusps are valid in rare cases. But only for times when the planet/luminary is in both signs.
For the other planets, their apparent visible disk is smaller that the valid cusp-time in question is very rare indeed, but still can happen, and can be calculated. For example, Jupiter is currently 31.3 arcseconds wide, and it travels that distance currently in about 57 or 58 minutes. Mind you, Jupiter changes signs only once a year (except for retrograde motion on a cusp).
to calculate apparent disk:
http://aa.usno.navy.mil/data/docs/diskmap.html
Edited to add: Being born September 20th, people always ask me if I'm a cusp. With the Sun at 27Vir30 (or spanning the zodiac from about 27Vir15 - 27Vir45, if you prefer) I deny it outright.
Actually, there are valid arguments for the inclusion of cusps, but not what many people think. The Sun and the Moon are each roughly 30 arcminutes (1/2 a degree) wide. The Sun moves approximately 1 degree a day, the Moon, an average of about a degree every 2 hours (but it varies). So there exists a roughly 12 hour period where the Sun is *physically* straddling the imaginary line between the signs, and about an hour when the Moon is physically between two signs. (From about 29 deg 45' in one sign to about 00 deg 15' in the other.)
Now, we could get all technical, and use trigonometry and calculate what percentage of the disc of the Sun or Moon is in each sign, and we would find that the percentage is very low unless one is very clode to the dividing line. I think this is valid, as it follows visual symbolic logic ("as above, so below"), but is kindof overkill.
Now there's one school of thought that thinks that when the mid-point of the Luminary in question crosses the line there's a "quantum leap" to the next signs energy -- the other side would say it's a gradual shifting of energies when the planet is physically in both signs. In the situations I've seen, for clients who are *very* close to the border where I have to go with my observations -- that cusps are valid in rare cases. But only for times when the planet/luminary is in both signs.
For the other planets, their apparent visible disk is smaller that the valid cusp-time in question is very rare indeed, but still can happen, and can be calculated. For example, Jupiter is currently 31.3 arcseconds wide, and it travels that distance currently in about 57 or 58 minutes. Mind you, Jupiter changes signs only once a year (except for retrograde motion on a cusp).
to calculate apparent disk:
http://aa.usno.navy.mil/data/docs/diskmap.html
Edited to add: Being born September 20th, people always ask me if I'm a cusp. With the Sun at 27Vir30 (or spanning the zodiac from about 27Vir15 - 27Vir45, if you prefer) I deny it outright.
