I’m doing a workshop on astrological house division at Kepler College this spring, and in April I’ll give a talk that focuses on the symbolism of house division. It will act as a teaser for the workshop.
It’s free and open to the public.

Rhys Redmond Chatham Astrology
Traditional astrology: horary, natal, elections. Zodiacal releasing analysis. Solar revolutions and distributions.
I’m doing a workshop on astrological house division at Kepler College this spring, and in April I’ll give a talk that focuses on the symbolism of house division. It will act as a teaser for the workshop.
It’s free and open to the public.
Painting: Jan Matejko, 1872
With the second consideration, Bonatti turns his attention to the querent and the proper way to ask one’s question. Bonatti recommends intense and heartfelt prayer to our higher power, whatever that may be, that we know the truth of the matter we are inquiring about.
He then recommends creating an area of focus around the question and concentrating on it for at least a day and a night before going to the astrologer, and in doing this, we increase the likelihood of the words of Master Jesus coming to pass, as stated in Matthew 7:7, “Ask, and it will be given to you; seek, and you will find; knock, and the door will be opened to you.”
This in fact is the process used in hermetic magic. In traditional kabbalah, there is a process known as kavanah, which literally means “intention” or “sincere feeling, direction of the heart”. We create an area of focus on a specific thing and concentrate on it, and through doing so we bring the things concentrated on into manifestation.
To give a benign example, one could strongly visualize a coin of one euro, or a GB pound, or an American quarter. We visualize the coin strongly each day over a period of time, making kavanah with it, and voilà! One day we are walking in the street, and we happen on the coin while walking. The act of finding the coin seems completely natural and can be explained away as chance. But practitioners of magic would know that the coin appeared as a result of the Path of Creation, where an intense thought form that is concentrated on over a period of time gradually takes form on the physical plane.
Equally, Bonatti advises us to make, in effect, kavanah with our horary question, first praying to know the truth of the matter and doing this with intense emotion and feeling, because we have a strong NEED to know.
And only after doing this, do we go to the astrologer and pose the question.
Bonatti adds that of course there will be times where there is a sudden need to have an answer to the question. In this case the need is so strong and the emotions and feelings of the querent so high that the question, once posed, will be answered.
Bonatti then warns that there are many foolish people who will not make the necessary preparations for posing their question and phrase their query in such a way that it does not get at the truth of what the querent really wants to know. And then the querent blames the astrologer when the given answer is ambiguous.
In short, Bonatti’s advice for us is that for a clear and precise answer to our question, it is best that the question comes from a sincere and deeply felt need to know.
I did a contemplation on the First Consideration of Guido Bonatti’s 146 Considerations. Below are my notes of the contemplation.
Guido Bonatti was one of the most famous of medieval astrologers. An advisor to important politicians in 13th Century Italy, his astrological advice influenced key events in his tumultuous times. He was so well known and influential that Dante includes him in the Inferno!
The translation I used was that of Benjamin N. Dykes (Cazimi press 2010). If you don’t have a copy, you can find an online translation by Henry Coley (1675) of the 146 Considerations here.
In this consideration Bonatti explains how it is we can ask a horary question at a seemingly random time, cast a chart for that time, and that we somehow get an answer from the apparently arbitrary configurations of the planets in relation to the constellation of stars.
Bonatti’s explanation has three components:
He says that the explanation must first come from the querent’s Soul. The querent is “moved by his intention to pose a question”. Essentially, this means that the querent must be emotionally involved with the question, the more pressing the need, the better the answer. Frivolous questions are likely to get a frivolous response, as are questions asked from idle curiosity.
Bonatti goes on to say that the second component is, of course, the planets and constellations themselves and their movement.
He finishes by saying that it is the “stars” themselves that prompt the querent to ask the question. That the question would not have come to the surface of consciousness unless the stars were positioned in such a way that this could happen.
Finally, Bonatti gives us the third component. He says that it isn’t enough to have the original thought or impulse concerning the question, nor will an astrological configuration favorable to answering the question be enough to result in a horary chart. The final ingredient concerns the will of the querent to act on the motivation one receives from within, in combination with the configuration of the various astrological objects in the sky and what they represent.
Yet, Bonatti does not halt his inquiry there. He delves deeper, probing the dialectic between human volition and cosmic configuration. It is not merely the inception of thought nor the fortuitous alignment of astral bodies that precipitates the birth of a horary chart. Rather, it is the fusion of inner impetus with celestial alignment—the harmonious resonance of human will with cosmic intent—that catalyzes the gestation of inquiry. Bonatti unveils the ineffable synthesis of human will and cosmic resonance—a cosmic alchemy wherein the querent’s inner impulse converges with the celestial symphony.
When the motivation of the querent and that of the stars perfectly align, the querent takes action and brings the question to the astrologer. The precise moment that the astrologer understands the question is the moment that the chart is cast.
This moment falls within the realm of fate, which was set in motion by the subtle thought or nudge emanating from the querent’s Soul until gradually taking on form until it is finally engraved upon the querent’s field of consciousness. The universe takes notice and events unfold on the outer in a seemly “natural” way that by the time the querent takes the question to the astrologer and the astrologer has understood the question, the stars have moved into perfect alignment, and the question is answered.
R. Redmond Chatham – Paris, March 2024.
British astrologer Mary English interviews Rhys for her podcast.
Many astrologers have side gigs that they do in addition to astrology. Some of us are also psychologists, we have some homeopaths, stock analysts, also psychiatrists; I know of at least one astrologer who, when no one is looking, is a lawyer!
Astrologer Mary English outed me in my other line of work in this talk that we had recently on her podcast. Learn the shocking truth here…
In this interview, I speak about my background as an astrologer and stay away from overly technical topics. Mary and I speak about astrology in its broad strokes.
Here is the link to the podcast.
And here is a video version of the podcast:
—ooOoo—
Why are there so many astrological house systems and why should they create so much controversy?
In this conversation with Ana Isabel of LifeAstrologer, Rhys Chatham discusses how the various house systems evolved and the different ways in which they have been used.
The replay link is below for this month’s AFAN Community Workshop with Rhys Chatham on ‘Astrological House Division and the Symbolism of the Celestial Circles.’ Rhys explained how the major house division systems are calculated in a way that does not require any math.
Rather than advocate the use of one house system over another, Rhys compared them and looked at the various celestial circles they are based on. He guided us through the symbolic implications of each of house system and how they might impact your chart interpretation.
In the workshop Rhys taught what distinguishes one house system from another, allowing you to make informed choices on which ones to use, for what, and when.
The house systems covered in the workshop included the ecliptic-based (whole sign, equal and Porphyry), space-based (Meridian, Regiomontanus, Campanus), and time-based houses (Alcabitius, Koch and Placidus).
I have a piece on Astrological House Division in the current issue of The Evolving Astrologer (formerly known as the Career Astrologer). This magazine is published by the Organization for Professional Astrology (OPA). It is directed at all those interested in Astrology, newcomers and professionals alike.
Click here to download a PDF version of the magazine. My article appears on page 48-55.
For your ticket and Zoom codes, click here.
Saturday, 1 April at:
Rhys Chatham explains how the major house division systems are calculated in a way that does not require any math.
Rather than advocate the use of one house system over another, we will simply compare them and look at the various celestial circles they are based on, reflecting upon the symbolic implications of each of them and how they might impact on chart interpretation. We’ll discuss what distinguishes one house system from another, allowing you to make informed choices on which ones to use, for what, and when.
In this talk we will cover the ecliptic-based (whole sign, equal and Porphyry), space-based (Meridian, Regiomontanus, Campanus), and time-based houses (Alcabitius, Koch and Placidus).
It’s free! If you would like to attend, click on the site (below) to register and get your ticket and Zoom codes.
House division systems are based on different celestial circles. After a quick review of the astronomy, we’ll discuss those differences and look at how they might affect chart delineation on both symbolic and practical levels.
Lilly on 3rd house questions:
Christian Astrology (CA) pp. 188-192
Brethren:
Lilly says that while there are many demands which may be made concerning questions to the 3rd House, the principle ones concern:
How to judge these questions:
Rumors:
On another topic, on CA page 192-194 we cover the topic of whether a rumor be true or false.
While rumors are attributed to the third house and its Lord or Lady, Lilly has us consider the angles, the Moon and Mercury among other things; the rules are a bit complicated and often involves bringing other houses into the picture.
Reports, News, Intelligence or Fears? Are they true or false? Do they signify good or evil? (CA pg 192)
Also, from CA page 193:
If at any time you hear some news and want to know if it is prejudicial to you…
It will not be detrimental to you if:
It will be detrimental to you (or to whom the news concerns) if:
If counsel or advice given is good or evil? CA pg 194
If the rumors be true or false according to the ancients:
The rumors are true if:
Judge to the contrary if:
Pg 194 – Rumors are for the most part true when:
If the Angles of H4 & H10 be fixed and the Moon received in them (i.e. the Moon is in one of those houses?)
Rumors of evil will be false or turn into good things if:
If L1 is under the beams of the Sun the matter shall be kept secret and few will ever know the truth of it.
Of counsel given, whether it be for good or evil.
Counsel is given with an honest heart if:
Counsel is given with malintent if:
Short Journeys:
Other third house topics:
This article on ecliptic-based house division is Part 3 of a three part series. To start at the beginning , click here.
Porphyry is a quadrant house system. In quadrant house systems, the ascendant defines the first house cusp, and the MC defines the tenth house cusp. This creates four sectors or zones within the circle of the ecliptic, otherwise known as quadrants.
Named after the third century Neo-Platonist philosopher and astrologer, Porphyry, this system was used from the earliest days of horoscopic astrology and was described by Vettius Valens in Book 1 of Anthology, his astrological textbook.
In the Porphyry system, the span of the ecliptic between the horizon and midheaven is trisected to produce three houses. This makes the houses very easy to calculate, you can practically do it in your head! Because the number of degrees between the ascendant and MC vary according to location, time of day and season, the quadrants are rarely of equal size.
The advantage of Porphyry houses is that the first house cusp starts at the degree of the Ascendant, and the degree of the MC defines the 10th house cusp, thus underlining the importance of angularity in horoscopic astrology. In doing this, Porphyry anchors houses to the earth in that it is the local horizon that defines the start of the first house, and the local meridian that defines the 10th house cusp and MC.
One reason astrologers use quadrant house systems is for the same reason that they use the tropical zodiac: because they are tied to what’s going on in the sublunar world. Just as the tropical zodiac is tied to the earth’s seasons, quadrant houses are tied in profound ways to the physical earth itself. The idea behind using quadrant houses is that they better reflect what is happening in the terrestrial world as opposed to the sidereal world.
Furthermore, with Porphyry, we distinguish and underline the difference between a planet being domiciled in a sign and a planet being in an astrological house.
An astrological house represents things that are linked to the Earth that we live on, the domiciles are in the heavens. For example, we could have two planets domiciled in Aquarius, with Mercury in Aquarius in the 12th House and Saturn in Aquarius in the 1st House (see chart below).
Left: Porphyry Houses (quadrant system) – Right: Whole Sign Houses
We lose this symbolism in Whole Sign houses (see chart above), but we get it back in quadrant systems and in systems where the 1st House starts with the Ascendant, which is one reason why ancient astrologers used quadrant house systems in addition to WSH cusps.
Granted that the Porphyry system is more anchored to the earth and that it is a quadrant system, it is still based primarily on the ecliptic. So, after a time, astrologers began entertaining the idea of basing the houses on celestial circles other than the ecliptic, perhaps ones that were more linked to the earth, such as the celestial equator and/or the prime vertical. This would bring us to a discussion of the space-based houses, which we will save for a future blog. For now, let’s move on to our conclusions of what we’ve covered so far…
We’ve been discussing the ecliptic-based house systems: Whole Sign Houses (WSH), Equal and Quadrant Houses. Which house system should we use?
Which one to use depends on what system of astrological praxis one is following. If you’re following Project Hindsight (Robert Schmidt, Robert Hand) and its followers, you’ll probably want to use mainly WSH, using equal and perhaps quadrant houses for planetary strength and length-of-life. However, later scholars who reviewed the same material as Project Hindsight have recently arrived at alternative interpretations regarding Hellenistic house doctrine. Some seem to think that degree-based quadrant houses were used by the ancients for topics, in addition to planet-strength and length of life. These scholars conclude that the ancients (Dorotheus, Ptolemy, Valens, et. al) used quadrant houses for more precise readings, when the exact birth time was available. Exact birth times often were not easily come by in ancient Greece, in which case WSH were used.
This undoubtedly was most often the case (no exact birth-time) resulting in a highly developed Hellenistic technique of using sign-based aspects and houses for delineating a chart. Also, it made casting a chart less time consuming (no computers in ancient times), so it makes sense that degree-based houses and aspects were used only when a birth time was available and when a high degree of accuracy was called for.
However the ancient Greek astrologers may have calculated their house cusps, my policy with respect to these new scholastic findings is to keep an open mind and not fall into the trap of turning previous interpretations of the ancient Greek authors into dogma. On a practical level, my personal choice is to use both WSH and quadrant houses for topics in the context of natal readings.
Modern astrologers, of course, feel free to pick and choose whatever techniques work for them. If you fall into this category, I would highly recommend basing your choice on the celestial circles that we have been discussing. Keep in mind their symbolism, and use whichever house system corresponds best to the goals of your astrological tradition (ancient, classical, humanistic, psychological, evolutionary, etc.)
As we have seen, each house system is based on a different set of celestial circles, which render varying house cusps and sometimes put planets in different houses. Let’s say that this happens when using whole sign houses and Porphyry on the same natal chart (see example above).
Saturn jumped from the 12th House to the 1st House, oh dear! What do we do?!?! Which chart do we use? Which one is “right”?
The answer to this question is that both charts are right; the only thing that is happening is that we are seeing the same native from different perspectives! It is not a question of choosing between one or the other. Both must be interpreted.
So, when looking at a natal chart, I have found it is always best to try putting it in more than one house system to see if any of the planets change houses. When they do, I look at the changes with interest and delineate both.
Working simultaneously with two house systems often yields interesting information. For example, if I’m using WSH and Porphyry or some other quadrant system, when I see a planet move from one house to another, I interpret both and see what resonates with the client. With clients who are past their second Saturn return, I have found that both usually resonate, representing different aspects or periods of their lives. For younger clients this is not always the case, because it may be that the symbolism represented in one of the charts has simply not happened yet.
Another thing to keep in mind is which house system we use depends on what we are attempting to do.
For example, if we are focused on prediction, we might use one house system, in horary we might favor another, in natal analysis another. Ideally, the house systems we use would be based on which celestial circles are used to determine the house cusps, and how the symbolism of those circles relates to what we’re trying to accomplish. For example, what is prediction? It is a form of fate. Where does fate come from? One way of putting it is that it is in the hands of the universe. It might make sense to use whole signs in that case, since the house cusps in whole signs are based in the heavens, rather than where we live on the planet Earth. On the other hand, if we are looking for a lost object, we might want to use a space-based system like Regiomontanus. We’ll talk about space-based systems in another article.
Moving on, in conclusion, I’d like to say that all the symbolism I’ve mentioned up to now are just ideas to get the conversation going amoung present day astrologers: traditional and modern. Rather than arguing in favor of one house system over another, it might make more sense to focus our research on which house system is best for which astrological technique based on the celestial circles that come into play.
I look forward to this discussion!