I mentioned that the zodiac areas, namely houses, are one of the most important variables that we benefit from while doing astrology studies. I also mentioned that the horoscope houses are formed due to the rotation of the Earth around its axis, that is, due to its daily rotation. The areas formed as a result of this movement of the Earth are divided into two by the horizon line on the horizontal axis. On the eastern horizon of the horizon line, the rising point of the Sun (Ascendant - ASC) and on the opposite side of the Ascendant (Descendant - DESC) points are determined. However, the highest point, the apex, that any planet can rise in the sky is also called MC (Mideheaven, Medium Coeli). At this point it divides the astrological fields vertically. The section directly opposite MC is called IC (Imum Coeli, Astrological Rare). In this case, the rising Sun on the eastern horizon determines the person's sign in the 1st house. The horizontal horizon line and the vertical meridian, which descends from the midpoint of the sky to the midnight point, intersect with the horizon line and divide the areas into four parts. These four sections are divided into three 30-degree parts within themselves and form an area system consisting of 12 parts and 30 degrees.
Therefore, “Houses consist of the division of the parts of the sky above and below the point where we stand. When a planet is in the first house, it means just below our eastern horizon. Being in the sixth house means below the western horizon. These observations depend entirely on our point of view. Advance a few miles and the planet's home position immediately changes. While Mercury is up in America, it may be setting in London. In New Delhi, it is well below the horizon. The zodiac sign it is in does not change. But the house changes. A new point of view, a new home. And a new home means new experiences. So a new natal chart[1].”
In short, at the point where we stand, we see half of the sky, but we cannot see the other half. If there is a ship on the horizon, it means that the ship is in our field of view. Therefore, the areas that we can see will inform us about the facts that we share with others because they are visible, and that everyone knows. The six areas below, which represent the darkest corners of our invisible minds, are the areas where sometimes only the private ones, sometimes only the truths that we hide from ourselves and sometimes even from ourselves, are analyzed. While the information from visible areas is objective, we make inferences about subjective information, feelings and thoughts unique to us from areas that we cannot see.
In this case, planets that are visible above the horizon and planets that we cannot see below the horizon give us various expressions. The visible planets provide more concrete information that can be obtained by knowing the person when acting as a good observer without knowing astrology. There are no secrets here, everything is known by two people. So it's not a secret. But planets below the horizon are more abstract; It provides information about the storms that break within the person, his search, desires, passions and feelings. Here we know that there is little or nothing that two people know. As I mentioned before, maybe the person is hiding it even from himself. The planets in the invisible part contain more mystical, far from the objectivity of the mind and private information.
So, we can say that signs and houses are different concepts. An Aries in his own home; While a guest Aries in the house of Scorpio will be able to fully reflect his pioneering and fire characteristics, an Aries will sometimes refrain from displaying his pioneering feature psychologically, and sometimes the energy of the fire element can be suppressed. “Horoscopes are psychological processes. They reflect the events inside your head. Houses are experiential. They tell you what happens when you bring the contents of your head into the arena of life. We are the signs and build the houses[2].” Finally, it will be useful to know that the 1st, 4th, 7th and 10th areas of these 12 areas are also important when interpreting birth charts.
The areas that divide the astrological Zodiac have been interpreted differently in astrological studies over time, and various methods have been created in terms of their interpretation. Different methods used in the interpretation of spaces have led to the formation of different house systems. The most widely used of these home systems today is the Placidean Home System. However, apart from this system, as I mentioned, there are many home systems. These are the Equal House System, Regiomontanus, Campanus, Alcabitius etc. various home systems. Although we will use the Placidean House System, which is widely used in natal chart studies, it will be useful to get to know these house systems in general, considering that knowing will benefit the person.
Equal House System: It is a system that is known to have been used in the time of Peteris BC, but we do not know exactly at what interval it was used. This system consists of creating 12 fields with 30 degree angles along the Ecliptic[3], starting from the Ascendant Sign on the Eastern Horizon, based on the poles of the Ecliptic. In the equal house system, MC is not considered the starting point of the tenth house, only ASC is considered the beginning of the first house. Although it is used in some schools, this system is not an accurate method since the Earth and therefore the day are not fixed.
There are also home systems that we can consider as various versions of the equal home system and not actually home systems. These are the Solar, Solar and Lunar systems.
Solar House System: The position of the Sun at the time of one's birth is considered the ascendant ASC. Starting from this point, the house boundaries are advanced to consist of 12 equal areas of 30 degrees. The resulting table is considered the Solar Table. Generally, this method is used in cases where the time of birth is unknown.
Solar House System: Again, the leading actor in this system is the Sun. The position of the Sun in the horoscope is considered the boundary of the fourth house, and the other house boundaries are advanced from this point to obtain 12 equal areas of 30 degrees.
Lunar House System: In this system, the Sun loses its throne to the Moon. The position of the Moon in the horoscope is taken into account and this position is considered the limit of the tenth house. After the border, it is similarly divided into 12 equal parts consisting of 30 degree angles and the borders of the other houses are determined.
Local Space House System: In the equal house system, the ecliptic line was taken into account, in this system the ecliptic leaves its place to Azimuth[4] and starting from ASC, houses are obtained by dividing 360 degrees into 12 equal areas, as in the equal house system.
Placidus House System: It was developed by Italian-born Astrologer and Spiritualist Placidus de Titus, who lived between 1603 and 1668 AD. This system, developed by the person who is considered to be the master of horoscope techniques, is still widely used in the world under the name of Placidean House System due to its unique features. This system has been misunderstood many times as a time-based system. It is essentially a system obtained by making projections on the Ecliptic through the house circles of the equator. ASC is considered the first house and MC is the tenth house bounds, and two-to-one or two-to-one adjustments are applied in the declination values.
Regiomontanus: Developed by the German mathematician and astronomer Johannes Müller. Müller BC. He made reforming improvements to many astrological issues dating back to the fourth century. He made many calculations in the field of astronomy and astrology with trigonometric calculations, renewed the Manlius calendar and strengthened Ptolemy's methods by bringing innovations. The house system he developed was named after his death and continues to be used even today. Müller's method uses house circles passing through the North and South points above the horizon. In this method, MC and ASC are on the borders of the tenth and first houses, respectively. It passes through the division points MC and ASC and the House Circles of arcs continuing along the Celestial Equator. The ecliptic of the house circles are marked as house boundaries. We can say that this system is a simpler version of the Placidean system.
Campanus: This calendar was developed by the Italian mathematician and astrologer Giovanni Campani. The system he developed is a valid home system that is still in use. In the Campanus system, the house circles pass through the North and South points of the horizon. The shape of the houses, each thirty degrees, is divided into twelve equal parts. The difference from the Equal House System is that the determined areas are revealed by the real house circles passing through the North and South points. In this way, the North and South Nodes of the Moon can also be determined. Satisfactory in terms of geometric calculations, this system consists of a series of points extended along the Prime Vertical in steps of thirty degrees, starting from the Zenit (MC) point and advancing Eastward towards the eastern point of the horizon. House containers are located at the points where this circle cuts the Ecliptic.
Morinus: Developed by the French mathematician and astrologer Morin de Villeriranche. His views on astrology and the house system he developed are still valid today. In the Morinus House System, houses are formed at intervals of thirty degrees, starting from the point where the celestial equator and the upper meridian intersect, proceeding along the Celestial Equator passing through the poles of the Ecliptic. House boundaries are drawn from the intersection of the great house circles passing through the poles of the Ecliptic with the Ecliptic. In this system, MC is not the tenth house and ASC is not the cusp of the first house, and the beginning of the first house passes through the eastern point of the horizon.
Koch: Developed by Walter Koch, this system is also called the Birthplace House System. It is a method of dividing the semi-diurnal arc of the ascending degree into equal shares to determine the house boundaries on the horizon. For the house boundaries below the horizon line, the semi-night arc is used. MC is considered the tenth house Kasp and ASC is considered the eleventh house Kasp.
[1] Steven Forrest, The Sky Within, Tsar: Barış İLHAN, Barış İlhan Publishing House, 1997, Pg: 181
[2] Steven Forrest, The Sky Inside You, Tsar: Barış İLHAN, Barış İlhan Publishing House, 1997, Pg: 187
[3] The ecliptic, or ecliptic, is the plane of the Earth's orbit around the Sun. While the orbital plane is actually defined by the movement of the center of masses of the Earth-Moon system around the Sun, the eclipse is determined by considering only the Earth and the added error due to the mass of the Moon is neglected. In this case, the eclipse can also be viewed as the apparent annual path the Sun takes across the sky. The orbits of the Moon and other planets other than Pluto are around the ecliptic. The angle between the ecliptic and the celestial equator is equal to the tilt of the Earth's axis. This angle is called the slope of the ecliptic and is approximately 23°27′.
[4] Azimuth (from Arabic: al-Sumut, meaning "direction"), the angular distance of a celestial body's direction relative to the observer from the north or south point on the horizon. It is the angular distance of the point where the vertical circle intersecting the celestial body touches the horizon to the reference point (usually north). The concept of azimuth is mostly used in the meaning of the horizon compass direction in daily use. The azimuth is the horizontal component of a direction chart. Also known as the horizon angle. It is measured clockwise around the horizon. It is measured from north to east in astronomy and geodesy, and from south to west in geodesy. It is usually specified in degrees of angle. In astronomy, it is the angle made by the point where the star's celestial meridian cuts on the horizon plane with the North pole. Source: WikiPedia
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