What Arabic astrology is
Arabic astrology, sometimes called Arabian astrology, is the astrology written in Arabic across the medieval Islamic world from the eighth century, by scholars of many origins and faiths: Persian, Arab, Jewish and Christian among them. Its own name for the art was ʿilm aḥkām al-nujūm, the science of the judgments of the stars. This guide sets out where it came from, who wrote it and what it computes, and how an Arabic astrology app can carry those computations faithfully.
It is not a separate zodiac, and it has little to do with the "Arabic zodiac" signs and name-based horoscopes that circulate online. It is the twelve-sign, seven-planet astrology of the Hellenistic world, received in translation, compared against other traditions, corrected and set in order by the astronomer-astrologers of the Abbasid court and their successors. The Hellenistic astrology birth chart, with its houses, lots, sect and dignities, became the Arabic nativity, enlarged rather than replaced. When medieval Europe came to learn astrology, it learned it largely from these Arabic books.
The zodiac signs in order, with their Arabic names
Among the zodiac signs in different cultures, the twelve of Babylon, Greece, India and the Islamic world share one root: the twelve 30° divisions of the Sun's path that Babylonian astronomers fixed and Greek astrologers handed on. The Arabic authors translated the names and here and there changed the picture. The zodiac star sign animals — ram, bull, crab, lion, scorpion, goat and fish — keep their creatures in Arabic, while the Libra zodiac animal symbol is no animal at all but the scales, al-Mīzān, the one object among the familiar figures. In Arabic three more signs are objects: Virgo the ear of grain, Sagittarius the bow and Aquarius the bucket. Canopy itself can be read in Arabic, as well as English and Turkish.
- Aries — al-Ḥamal, the ram; ruled by Mars
- Taurus — al-Thawr, the bull; ruled by Venus
- Gemini — al-Jawzāʾ, also called al-Tawʾamān, the twins; ruled by Mercury
- Cancer — al-Saraṭān, the crab; ruled by the Moon
- Leo — al-Asad, the lion; ruled by the Sun
- Virgo — al-Sunbula, the ear of grain the maiden holds; ruled by Mercury
- Libra — al-Mīzān, the scales; ruled by Venus
- Scorpio — al-ʿAqrab, the scorpion; ruled by Mars
- Sagittarius — al-Qaws, the bow; ruled by Jupiter
- Capricorn — al-Jady, the kid or young goat; ruled by Saturn
- Aquarius — al-Dalw, the bucket, plainer than its English nickname, the Water-Bearer; ruled by Saturn
- Pisces — al-Ḥūt, the fish; ruled by Jupiter
The tropical zodiac follows the seasons from the spring equinox: Aries, Taurus and Gemini are the spring signs, and Cancer, Leo and Virgo are the summer signs of the zodiac in the northern hemisphere, opening at the June solstice. The Sun's dates in each sign therefore barely move from year to year; the sign in October, for instance, is Libra until about the 23rd, when the Sun enters Scorpio.
Baghdad and the translation movement
The Abbasid caliphs moved the seat of the caliphate to Iraq and founded Baghdad in 762. Later sources report that the astrologers Nawbakht and Māshāʾallāh were among those who chose the moment for laying its foundations. Whatever the precise details, the story reflects the standing astrology had at court: a learned discipline, bound closely to astronomy, consulted on matters of state.
Over the following two centuries the translation movement — remembered in connection with the House of Wisdom, Bayt al-Ḥikma — carried a great part of Greek, Persian and Indian learning into Arabic. Three inheritances met in Baghdad. From the Greek world came Ptolemy's Tetrabiblos and the Hellenistic doctrine of signs, houses, aspects and dignities, together with Dorotheus of Sidon's verse handbook on nativities and elections, which reached Arabic through a Middle Persian version. From Sasanian Persia came its own astrological tradition, with its interest in the fortunes of dynasties and in the conjunctions of Saturn and Jupiter. From India came astronomical tables and methods, among them the work known in Arabic as the Sindhind.
The result was not a patchwork. Arabic authors compared, corrected and arranged what they received, and wrote introductions so orderly that they served as standard textbooks for centuries.
The key figures of medieval Arabic astrology
Māshāʾallāh, a Jewish astrologer from Basra, served the early Abbasid court and wrote on nativities, questions, elections and the astrology of world events. Sahl ibn Bishr, in the ninth century, wrote introductions and books on questions and elections that were widely read in Latin. al-Kindī, called the philosopher of the Arabs, gave the art a philosophical frame, describing the heavens as acting on the world through rays.
Abū Maʿshar of Balkh (d. 886) was among the most influential of them. His Great Introduction defended astrology as a natural science grounded in Aristotle's physics, and his work on the great conjunctions of Saturn and Jupiter read history itself in their rhythm. In the tenth century al-Qabīṣī wrote a compact Introduction for the Hamdanid ruler Sayf al-Dawla, and in 1029 al-Bīrūnī completed his Book of Instruction (al-Tafhīm), which builds patiently from geometry and astronomy toward judgment and includes an account of the astrolabe, the instrument astrologers used to find the rising degree for an astrology chart.
In the twelfth century these books crossed into Latin, largely through Spain, in translations by John of Seville, Hermann of Carinthia and others. Their authors became Messahala, Zael, Alkindus, Albumasar and Alcabitius, the authorities Guido Bonatti cites throughout; Alcabitius's Introduction became a university textbook. The Picatrix, written in Arabic in the tenth or eleventh century, was translated in the thirteenth at the court of Alfonso X of Castile. Words such as almuten, the "Arabic parts" and many star names are traces of that passage.
The signature techniques
Arabic astrology inherited the Greek chart and sharpened a set of instruments for reading it. The lunar mansions, manāzil al-qamar, follow the Moon through twenty-eight stations and join an older Arabian star calendar to formal astrology. The Arabic Lots, al-sihām, are calculated points, led by the Lot of Fortune and the Lot of Spirit, that the Arabic authors multiplied and catalogued.
The planetary hours, inherited from late antiquity, divide day and night each into twelve parts, each ruled by a planet in the Chaldean order, so that a matter may be begun in an hour whose nature suits it. Electional astrology, ikhtiyārāt, is the art of choosing such moments — for a journey, a building, a marriage — and it fills whole books by Sahl ibn Bishr and others.
The almuten, from al-mubtazz, "the one who prevails", is the planet holding the most dignity over a degree or a set of places, the lord who speaks for the whole figure. And the fixed stars, catalogued afresh by al-Ṣūfī in the tenth century, add their own natures to any planet or angle they touch.
Arabic astrology and modern sun-sign astrology
A modern newspaper horoscope reduces a chart to the sign the Sun occupied and reads it as a personality type. The Arabic tradition reads the whole figure. It works with the seven visible planets, counts twelve houses from the rising sign — in the older manner by whole signs, though later authors also divided them by quadrant — and begins by asking whether the chart is diurnal or nocturnal: the doctrine of sect, which reverses formulas and changes which planets are favored.
Each planet is then weighed by its essential dignity — domicile, exaltation, triplicity, term and face — and by its condition: retrograde, combust, oriental or occidental. The signs carry the qualities of hot, cold, moist and dry, from which the astrologer judged a native's temperament. Time is read through techniques such as annual profections and the Persian period system of the fardārāt, in which each planet governs a span of years in turn.
None of this means the tradition ignored character; it looked for it across the whole chart, and so does Canopy. For someone born in early October, it reads not only the superficial Sun-sign Libra personality traits but the whole person: the temperament, al-mizāj, judged from the chart the classical way; the rising sign and its lord; the Moon; the almuten, the lord of the nativity; and the dignity of every planet.
Above all, the tradition is practical. Its books are organized around concrete judgments: the nativity, the question put to the astrologer (masāʾil), the choice of a moment, the revolution of the year. It treats the sky as a counsel on timing and circumstance — a practice of reflection, not a promise of outcomes.
Chiron, Lilith, Pluto and the Dragon
A modern chart often carries points that no medieval astrologer used. The Arabic tradition read the seven planets visible to the eye, the Ascendant and the angles, the lots cast from them, and two invisible points computed from the Moon's path, the nodes. For each modern addition the tradition had an instrument of its own, and it is the older one Canopy computes.
- Chiron and the asteroids. Chiron was discovered in 1977, Juno in 1804. While Western astrology uses Chiron, traditional Arabic astrology uses a sophisticated system that calculates and weighs individual Arabic lots, points cast from the planets and angles rather than observed. Canopy casts ten, among them the Lot of Marriage, the tradition's answer to what Juno is read for today.
- Lilith. Black Moon Lilith, the Moon's apogee or far point, entered astrology in the twentieth century. The tradition read the Moon through her sign and house, the lunar mansion she held at birth, the Lot of Fortune and the nodes, all of which Canopy computes.
- Pluto and the outer planets. Uranus was found in 1781, Neptune in 1846 and Pluto in 1930. Rulership, dignity and aspect in the Arabic books belong to the seven planets from Saturn inward, and Canopy keeps to them.
- The draconic chart. Its name comes from Latin draco, the dragon whose Head and Tail are the nodes, al-Jawzahr in Arabic. Canopy casts no draconic birth chart; it shows the dragon's two points where they fall in your tropical chart.
Sun vs Moon vs rising in the traditional chart
Asked to weigh Sun versus Moon versus rising, the traditional astrologers would have begun at the horizon. The rising sign, or ascendant, is the sign coming up in the east at the moment of birth. It becomes the first house, and in whole-sign houses each following sign is the next house, which keeps the meaning of signs in houses simple: each sign gives its house a character, and the planet that rules the sign governs that house's affairs. On Sun sign vs rising sign the old books leave little doubt: the chart is built on the rising sign, and the Sun, for all its rank as a light, is one planet among seven.
The Sun and Moon are the two lights, and the doctrine of sect sets their order: the Sun leads in a day birth, the Moon in a night one. The Moon, swiftest of the planets, was often read for the body and the changing circumstances of life, so Moon vs rising sign is no rivalry; the two are read together. The tradition never judged the zodiac Sun and Moon signs alone, but alongside the rising sign, the houses and the lords of the signs.
The rising sign also names the ruler of the chart, the planet that rules it by domicile. With the rising sign in Leo, the Sun rules the first house and becomes the ruler of the chart, so the Sun's own condition — its sign, house, dignity and aspects — weighs heavily in the judgment. Canopy shows your Sun sign, Moon sign and rising sign side by side, with the houses counted from the rising sign.
Profession and the Midheaven: careers by sign
The Arabic authors did not read a profession from the Sun sign alone. The astrology house of career is the tenth, the place of action, rank and reputation, and its key is the Midheaven, wasaṭ al-samāʾ, the middle of the sky: the sign culminating there, the planet that rules that sign, and that planet's strength. Ptolemy's Tetrabiblos adds the planets of action, Mercury, Venus and Mars, judged by their relation to the Sun and the Midheaven: Mercury makes scribes, merchants and teachers, Venus those who deal in perfumes, dyes and adornment, Mars those who work with fire and iron.
Canopy calculates your Midheaven from your birth time and place and gives a reading for the sign it falls in, drawn from the Picatrix and the classical Arabic authors, beside each planet's sign, house and dignity. The readings run like this:
- Aries — Mars: command and martial skill, the surgeon's knife, authority over work with iron and fire.
- Taurus — Venus: the maker of beautiful things, the tailor, jeweller and musician, and a standing built slowly that lasts.
- Gemini — Mercury: writing, mathematics and accounts, commerce, the trusted scribe or secretary.
- Cancer — the Moon: the public and its changing moods, the envoy, medicine, work with water.
- Leo — the Sun: the royal placement, high office and the magistrate's seat, the management of gold.
- Virgo — Mercury, exalted here as well: the accountant, physician, pharmacist or secretary, practical rather than abstract.
- Libra — Venus, with Saturn exalted: diplomacy and justice, the beautiful professions, legal and commercial calculation.
- Scorpio — Mars: medicine and surgery, command, the investigative arts.
- Sagittarius — Jupiter: justice, religion and law; the judge, the teacher, the orator.
- Capricorn — Saturn, with Mars exalted: building, land and estates, a slow climb through institutions, recognition late but lasting.
- Aquarius — Saturn: specialised and hidden knowledge, appraisals, the old laws, recognition after a time of obscurity.
- Pisces — Jupiter: wisdom and mercy, healing and religious service, writing and oration.
These are the signs of the Midheaven, not of the Sun. Lists of Cancer star sign careers, like most talk of the career of Sagittarius or any other sign, begin with the Sun; the tradition asked first which sign culminates and how strong its lord is. A Capricorn Sun with Gemini on the Midheaven receives Gemini's reading, and Mercury, its lord, is the planet to weigh. The Midheaven passes through all twelve signs in a day, so the reading needs an exact birth time.
Vedic astrology and the Arabic tradition
Traditional Arabian astrology synthesized knowledge from Babylonian, Sabian, Greek, and Vedic sources alongside their own. Yet in the Ptolemaic line that Canopy follows, traditional Arabian astrology uses the tropical zodiac, not the sidereal, as the seasons themselves were held to be a fixture of astrological influence. Ptolemy reasoned that the signs draw their natures from the seasons, and so began them at the equinoxes and solstices rather than at any star.
Canopy is therefore not a sidereal birth chart calculator, and it has no sidereal option. What it casts is the tropical sibling of a Vedic natal chart, and the two stand on more common ground than the question of the zodiac suggests.
- Rashi and lagna. Jyotish reads a birth first through the rashi, the Moon's sign, and the lagna, the rising sign, the same places the Arabic authors weighed beside the Sun. Canopy shows your Moon sign and rising sign together with your Sun sign, so it answers the question a rashi and lagna calculator answers, though in the tropical zodiac.
- Whole-sign houses. A jyotish natal chart, the D1 or rashi chart, counts its houses by whole signs, as the early Arabic authors did, and the South Indian chart gives each whole sign its own fixed box. Canopy draws its chart as a wheel, but if you came for a D1 chart generator or a South Indian birth chart generator you will find the same scheme: one whole sign to each house, counted from your rising sign.
- Nakshatras and mansions. The nakshatras, the Moon's stations in jyotish, are close kin to the twenty-eight lunar mansions, manāzil al-qamar. Canopy gives the mansion the Moon held at your birth and the one she lodges in tonight.
- Gochara. Gochara is the jyotish name for transits, the planets' present motion read against the birth chart, most often counted from the natal Moon. For gochara today, Canopy's Active Transits set the current sky around your natal chart and name the aspects each planet makes to it, measured tropically.
- Divisions of a sign. Jyotish reads a family of divisional charts, the vargas or D-charts, and the Arabic tradition kept divisions of its own. The drekkana, the D3, descends from the Greek decans and carries their name; Canopy shows the decan of every planet with its Chaldean ruler. The twelfth parts in Canopy's natal chart, the old dodecatemoria, cut each sign into twelve portions of 2°30′ counted from the sign itself, the division jyotish calls the dwadasamsa, or D12, and the bounds, five unequal segments of each sign shared among the five planets, recall the trimsamsa, or D30. There is no D60 chart calculator in Canopy: the shashtiamsa's half-degree divisions have no counterpart in the app.
How Canopy reads the Arabic tradition
Canopy is a traditional astrology app for iPhone and Android built on this corpus. Its readings are drawn from the traditional astrologers and their classical texts — al-Bīrūnī's al-Tafhīm, Abū Maʿshar, Māshāʾallāh, al-Qabīṣī, Sahl ibn Bishr, Abū ʿAlī al-Khayyāṭ, al-Ṣūfī's Book of Fixed Stars and the Picatrix, and the Greek and Persian authors they inherited.
Your natal chart is calculated in the tropical zodiac with essential dignities, whole-sign houses and the Lot of Fortune. In the choice of Placidus vs whole sign houses, Canopy keeps the older method: each sign is one house, counted from your rising sign, and the chart shows the Midheaven and the IC among its key angles, with the mean lunar nodes beside them. Canopy casts ten Arabic Lots, led by Fortune and Spirit, reversing the arc for a night birth, and records the lunar mansion the Moon held at your birth. It reads your temperament from the testimonies of the chart, and elects your almuten, the lord of the nativity, from five places in your chart. Part of the daily reading works as a decan calculator, naming the decan each planet holds and its Chaldean decan ruler, with interpretations drawn from the Picatrix, Abū Maʿshar and Sahl ibn Bishr.
Each day Canopy names the planetary hour ruling the moment and follows the Moon through the twenty-eight mansions, with the actions each favors and those it counsels against. It reads 35 fixed stars, 15 of them Behenian, against your chart and the current sky. Its electional tools scan the sky for windows suited to an intention — a contract, a journey, a beginning — and set aside moments when the Moon is combust; they can even find the best day for an elective surgery (astrological guidance only, not medical advice). Its talismanic timing finds when a significant star rises or culminates. Home Screen widgets keep tonight's mansion and the day's planetary hour in view. Canopy is available on the App Store and Google Play.
Questions
What is Arabic astrology?
Arabic astrology is the body of astrological writing produced in Arabic across the medieval Islamic world, beginning in the eighth century. It took the Hellenistic chart, drew on Persian and Indian material through the translation movement in Baghdad, and developed techniques such as the lunar mansions, the Arabic Lots, the almuten and electional timing. Its books, translated into Latin in the twelfth century, became the foundation of medieval European astrology.
How is Arabic astrology different from modern horoscope astrology?
Modern Western horoscopes usually center on the Sun sign and read it as personality. Arabic astrology reads the whole chart: seven visible planets, twelve houses counted from the rising sign, day or night sect, essential dignities, lots and the almuten. It is organized around concrete judgments — the nativity, questions, the choice of a moment — and treats the sky as counsel on timing rather than a description of character alone.
Sun, Moon and rising sign meaning: what does each one show?
Sun sign vs star sign is no real distinction: both name the sign the Sun occupied when you were born, which it holds for about a month each year. Your Moon sign is the sign the Moon held, which she leaves roughly every two and a half days; your rising sign is the sign on the eastern horizon at that moment, which changes roughly every two hours and so needs an exact birth time. The Arabic tradition builds the chart from the rising sign, counting the twelve houses from it and reading the native's life and body from it and its lord, and weighs the Sun and Moon as the two lights, the Sun chief in a day birth and the Moon in a night one. Canopy shows your rising sign beside your Sun and Moon signs and counts your whole-sign houses from it.
Sun sign vs Moon sign: which matters more in Arabic astrology?
Neither is read alone. The Sun and Moon are the two lights, and by the doctrine of sect the Sun leads in a day birth and the Moon in a night one, so for someone born at night the Moon is the more important light. The meaning of Sun and Moon signs then depends on the rest of the chart: the houses they fall in, counted from the rising sign, their dignity, and the planets that rule their signs. Canopy shows your Sun, Moon and rising signs together.
What is the Libra zodiac sign personality in Arabic astrology?
Arabic astrology describes the sign before the person. Libra, al-Mīzān, the scales, is movable air, hot and moist, masculine and diurnal, the house of Venus and the exaltation of Saturn, and the Sun enters it at the September equinox. Libra sign traits are lent to whatever stands there: a planet in Libra takes on that nature and answers to Venus as its host, and the house Libra occupies in your chart takes its character from it. A Libra Sun is therefore one part of the reading, weighed with the rising sign, the Moon and the rest of the figure.
What are the qualities of a Libra man?
The traditional authors wrote no separate Libra male characteristics; the old books describe the signs themselves, not one version for men and another for women. Libra is a masculine sign, but masculine and feminine are classes of the signs, alternating around the zodiac and paired with day and night, and a man or a woman may equally be born with the Sun or the rising sign there. The Libra good traits the tradition would recognize, a taste for beauty, company and music, come from Venus, its lord, in men and women alike, and how strongly they show depends on her condition in the chart. The same holds for every sign, so there is no separate Sagittarius guy personality either: Canopy does not ask whether you are a man or a woman, and reads temperament, dignity and the almuten from the chart alone.
Signs in houses meaning: what does the sign on a house tell you?
In whole-sign houses each sign is one whole house, counted from the rising sign, so the sign gives that area of life its character, and the planet that rules the sign governs its affairs from wherever it stands. With Aries rising, for instance, Taurus is the 2nd house, of livelihood, and Venus carries its matters; Capricorn is the 10th, and Saturn answers for career and reputation. Canopy counts all twelve houses from your rising sign and gives every planet a reading for the house it occupies.
What's the best astrology sign, or the best rising sign?
The traditional astrologers ranked no sign above the others. They asked instead how strong a planet is in the sign it occupies, its essential dignity, and judged a rising sign by the condition of its ruler: that planet's dignity, its house and the aspects it receives. Any rising sign can head a strong chart or a weak one.
Are there 13 signs in the zodiac?
No. The zodiac has twelve signs of 30° each; in the tropical zodiac Canopy uses, they are measured from the spring equinox. Lists of all 13 zodiac signs in order slot Ophiuchus, the serpent-bearer, between Scorpio and Sagittarius, but Ophiuchus is a constellation the Sun's path crosses, not a sign. al-Ṣūfī describes it as al-Ḥawwāʾ among the constellations of his Book of Fixed Stars, and it was never a 13th sign in astrology, Greek or Arabic.
Are the zodiac signs in the sky the same as the constellations?
Not quite. The zodiac belt is the band of sky along the ecliptic, the Sun's yearly path, where the Moon and planets also travel. The signs are twelve equal 30° divisions of it, while the constellations that lent them their names are star patterns of unequal size, and through the precession of the equinoxes the tropical signs have drifted almost a full sign from those patterns since antiquity.
Will the zodiac signs in the future shift because of precession?
Not in the tropical zodiac. Its signs are counted from the March equinox, which makes it, in a sense, equinox astrology: however far precession carries the equinox against the stars, about a degree every 72 years, Aries still begins with northern spring and the Sun's dates in each sign stay essentially where they are. It is the Sun's dates in the constellations, and in the sidereal signs tied to them, that slowly drift.
Is Arabic astrology tropical or sidereal?
Mostly tropical. Ptolemy's Tetrabiblos takes the beginnings of the signs from the equinoxes and solstices, and much of the Arabic tradition followed him, though some early tables built on Indian and Persian models were sidereal. Is sidereal astrology more accurate? Neither is: sidereal astrology ties the signs to the stars and tropical astrology to the seasons, and through the precession of the equinoxes the two now stand about 24° apart by the most common sidereal reckoning. Canopy uses tropical astrology only, so 0° Aries is the Sun's place at the March equinox.
Does Canopy have a sidereal horoscope calculator?
No. Canopy casts every chart in the tropical zodiac and offers no sidereal option, so it cannot stand in for a sidereal natal chart calculator. If you want sidereal positions anyway, the conversion is simple: the two zodiacs now stand roughly 24° apart, so to calculate Vedic astrology chart positions from Canopy's tropical degrees, subtract about 24° from each, the exact figure depending on the sidereal reckoning used.
How is a birth Vedic chart different from an Arabic natal chart?
Chiefly in the zodiac: a birth Vedic chart measures the signs from the stars, while the Arabic nativity in Ptolemy's line measures them from the seasons. Both read the seven planets and the lunar nodes, and a Vedic rashi chart counts whole-sign houses from the rising sign just as Canopy does, though a South Indian horoscope generator sets the signs in fixed boxes where Canopy draws a wheel. Canopy is no sidereal astrology birth chart calculator or Vedic astrology chart generator; it casts the tropical chart of the Arabic tradition.
What is my sign in Vedic astrology?
In a jyotish birth chart, your sign usually means your rashi, the sign the Moon held at birth, read together with the lagna, the rising sign, rather than the Sun's sign. Because the Vedic zodiac counts the signs from the stars, about 24° behind the tropical reckoning, your Vedic sign is the same as your tropical one or, more often, the sign before it. Canopy shows your tropical Sun, Moon and rising signs together, measured from the March equinox as Ptolemy measured them.
Does Canopy have a Makar rashi daily horoscope?
Not one written for a sign. Makar, Sanskrit Makara, is the Indian name for Capricorn, the sign the Arabic authors called al-Jady, the kid, and both traditions give it to Saturn and exalt Mars in it. Canopy's daily reading follows today's transits to your own chart, alongside tonight's lunar mansion and the planetary hour, rather than one forecast for everyone under a sign. Counted tropically, a Moon in Makar rashi falls in Capricorn or, more often, Aquarius.
Can I make a free Vedic natal chart or a free sidereal astrology birth chart on this site?
No. This website casts no charts, and Canopy itself casts no Vedic or sidereal charts. What the app casts is the tropical chart of the Arabic tradition, from your birth date, time and place, with whole-sign houses, essential dignities, ten Arabic Lots and the almuten, and beside it the lunar mansion your Moon held at birth, the Arabic cousin of the nakshatra.
Zodiac vs horoscope: what is the difference?
The zodiac is the circle of twelve signs along the Sun's path. A horoscope is a chart cast for one moment and place: the Greek hōroskopos, the "hour-marker", first named the rising degree itself, and the word later came to mean the whole figure built on it. The Arabic authors called the rising degree al-ṭāliʿ, "the rising one".
What is the Libra horoscope personality in traditional astrology?
In the oldest sense of the word, a Libra horoscope is a chart with Libra rising: the Greek hōroskopos first named the rising degree, and the Arabic authors read the native's life and body from the ascendant, al-ṭāliʿ, and its lord. Read that way, the personality begins with Venus as ruler of the chart, with her sign, house and dignity, then the Moon, Mercury and the rest of the figure; a Sun in Libra, where he is in fall, is one testimony among several. Canopy shows your rising sign beside your Sun and Moon signs and counts your houses from it.
Who was Abū Maʿshar and why does he matter?
Abū Maʿshar of Balkh, who died in 886, was among the most influential astrologers of the Abbasid age. His Great Introduction argued that astrology rests on natural philosophy, and his work on the great conjunctions of Saturn and Jupiter treated history as moving in long astrological cycles. Translated into Latin in the twelfth century as Albumasar, he shaped how medieval Europe understood the whole art.
How was an astrology chart cast with an astrolabe?
Casting an astrolabe natal chart began with setting the instrument's star map, the rete, to the moment in question, from a measured altitude of the Sun or of a bright star, or from the known hour. The astrologer then read off the degree of the zodiac rising on the eastern horizon, the ascendant, and the degree culminating at the Midheaven. al-Bīrūnī describes the instrument in his al-Tafhīm; Canopy does that arithmetic for you from your birth time and place.
Is there an app for traditional or medieval astrology?
Canopy is a traditional astrology app for iPhone and Android built on the Arabic corpus. It computes the natal chart with essential dignities and whole-sign houses, ten Arabic Lots, the almuten, the daily planetary hours and lunar mansion, and 35 fixed stars, with electional and talismanic timing. Every reading is drawn from the classical sources.
Is Canopy a star sign personality test?
Not a quiz. You enter your birth date, time and place, and Canopy reads your temperament, al-mizāj, from the chart the classical way, as testimonies of hot or cold and moist or dry given by the rising sign and its lord, the Moon and her phase, the planets that aspect them, the season of your birth and the lord of the nativity. The result is drawn from the four classical temperaments, choleric, sanguine, melancholic or phlegmatic, sometimes with a second shading it, and the working is set out beneath the reading so you can see how it adds up. The method needs an exact birth time, since the rising sign and its lord lead the testimonies.
What is the almuten of a chart?
The almuten, from the Arabic al-mubtazz, is the planet that prevails over a place or over the whole chart by holding the most essential dignity there. For the lord of the nativity, the Arabic authors weigh several places — the Ascendant, the Sun, the Moon, the Lot of Fortune and the prenatal new or full moon — and the planet with the strongest claim across them is judged lord of the nativity.
Whole sign vs Placidus houses: which does Canopy use?
Whole-sign houses, the older method of the Hellenistic and early Arabic authors, make each sign a single house, counted from the rising sign. Quadrant systems divide the sky between the four angles instead: the Porphyry house system, described as early as Vettius Valens in the second century, splits each quadrant into three equal parts, while Placidus, named for the seventeenth-century monk Placidus de Titis, divides each quadrant by time and grows badly distorted toward the poles. Placidus vs Porphyry is therefore a choice between two quadrant methods; Canopy keeps to the older method and casts the natal chart in whole-sign houses only, with no Placidus option.
Porphyry vs Placidus vs whole sign: why does a planet change house?
Because each system draws the house boundaries differently. Porphyry and Placidus both begin the 1st house at the rising degree and the 10th at the Midheaven, but Porphyry splits each quadrant into three equal parts by degree and Placidus by time, so a planet near one of the in-between cusps can sit in different houses under each. In whole-sign houses the boundary is the sign itself, and a planet changes house only when it changes sign. The choice among the three is therefore two quadrant methods against the older whole-sign one, which Canopy keeps.
What is the IC in astrology?
The IC, from the Latin Imum Coeli, "the lowest part of the sky", is the degree of the zodiac directly opposite the Midheaven, the angle beneath the earth. In whole-sign houses the signs in the houses never split: the fourth sign from the rising sign is the whole fourth house, while the IC degree itself usually falls in the third, fourth or fifth sign. Canopy calculates your Midheaven and IC and shows them among the chart's key angles, so no separate IC calculator is needed.
Why does my midheaven calculator put my MC in the 9th or 11th house?
Because in whole-sign houses the Midheaven is a degree, not the start of a house. The 10th house is the tenth sign from the rising sign, and the Midheaven degree usually falls in the ninth, tenth or eleventh sign, depending on your latitude and which sign is rising, just as the IC usually falls in the third, fourth or fifth. The tenth sign remains the house of action; the Midheaven is the culminating degree, wherever it lands. Canopy shows both, the Midheaven among your Key Angles and the tenth sign on your chart wheel.
Does Canopy use the mean node or the true node?
The mean node. The lunar nodes are the two points where the Moon's path crosses the Sun's; the Arabic astrologers called the north node al-Raʾs and the south node al-Dhanab, the Head and the Tail of the Dragon. As for north node vs south node, the Head was generally held to increase whatever it joined and the Tail to diminish it. Eclipses happen near the nodes, and Ptolemy's Tetrabiblos treated eclipses as the most powerful cause in the astrology of nations and cities, a method the Arabic astrologers inherited. Canopy shows the mean north and south nodes in your chart, alongside the Midheaven and IC.
True node vs North Node: are they different points?
No. The mean and true nodes are two ways of reckoning the same point: the mean node follows its steady backward motion through the zodiac, while the true node adds a small wobble from the Sun's pull, staying within about two degrees of the mean. The medieval tables knew only the steady motion, since the wobble was not measured until the end of the sixteenth century, so in the Arabic tradition North Node vs true node has a plain answer: the node of the old tables is the mean node, the one Canopy uses. To find your North Node, open Key Angles in your natal chart, where al-Raʾs and al-Dhanab stand by sign and degree.
Does Canopy show a Jupiter transit conjunct North Node?
Yes, among the day's closest transits. Canopy checks each of the seven planets against both natal nodes, the Head and the Tail, by conjunction, and its Day & Week Ahead view lists the day's closest transits on the day they perfect, so a Jupiter conjunct South Node transit can appear there as readily as one to the Head; tapping either opens the tradition's reading of that node.
Astro eclipse: does Canopy mark eclipses?
It does, in Day & Week Ahead. The Arabic astrologers called the nodal dragon al-Jawzahr, and an eclipse comes when a New or Full Moon falls close enough to one of its two points; Canopy marks such a New Moon as a solar eclipse and such a Full Moon as a lunar eclipse, with the time and the sign in which it falls.
Is Canopy a draconic chart calculator?
Not for the modern draconic chart, though it follows the dragon the name comes from. A draconic natal chart calculator shifts every placement so that the ascending node stands at 0° Aries, a modern technique Canopy does not offer. Canopy reads the nodes where they fall in your tropical chart instead: it shows them among the Key Angles, can list a planet's conjunction to them in Day & Week Ahead, and marks the eclipses that fall near them.
Mean Lilith vs true Lilith: which does Canopy use?
Neither: Canopy plots no Lilith at all. Mean Lilith is the Moon's averaged apogee; true, or osculating, Lilith follows her orbit moment by moment and swings widely around the mean; and where the comparison is Lilith mean vs interpolated, interpolated Lilith smooths those swings into a steadier path. Where the same question of mean or true arises for the lunar nodes, Canopy uses the mean node.
Is there a Lilith sign calculator free on this site, or a Lilith chart calculator in the app?
No. This site has no web calculators, and the Canopy app plots no Lilith, so it is neither a Black Moon Lilith calculator nor a Dark Moon Lilith calculator. The first is the Moon's apogee; the second usually names a hypothetical second moon reported in 1898 and never confirmed. The Arabic tradition looked for the Moon's darkness at the nodes, the Head and Tail of the Dragon, where the Sun and Moon are eclipsed, and Canopy shows both nodes in your natal chart.
Can Canopy read Jupiter square Pluto natal aspects?
Jupiter's half of them. Pluto was discovered in 1930, and Canopy, like the Arabic tradition, reads only the seven planets visible to the eye, so it draws no Pluto square Jupiter natal aspect. It does read Jupiter's own aspects to the other traditional planets by the five classical aspects (conjunction, sextile, square, trine and opposition), and weighs Jupiter by its essential dignity: at home in Sagittarius and Pisces, exalted in Cancer, in detriment in Gemini and Virgo, in fall in Capricorn.
What does a transit astro chart show?
Transit charts set the planets where they stand now around the chart of your birth. In tropical astrology current planetary positions are measured from the spring equinox, the same zodiac as the natal chart, so the two are read sign against sign, and in whole-sign houses a planet entering a sign enters one of your houses at the same moment. Canopy's daily reading draws both on one wheel, lists the aspects today's planets make to your natal planets, counting only the five classical aspects, and notes which planets are retrograde.
Why does my Venus sign calculator ask for a birth time?
For the sign it rarely needs one: Venus stays about a month in most signs, up to four months around her retrograde, so the birth date settles it unless she changed sign that day. Her house is another matter: houses are counted from the rising sign, which changes about every two hours, so a Venus house calculator needs your birth time and place. Canopy works out both, and will calculate Mars sign, house and dignity the same way: Venus is at home in Taurus and Libra and exalted in Pisces, Mars at home in Aries and Scorpio and exalted in Capricorn.
Does Canopy work as a yod calculator?
Yes. A yod is two planets in sextile to each other, both about 150° from a third, the apex, and Canopy's natal chart flags it in its Patterns section. The 150° quincunx at its heart is a later addition to astrology: Ptolemy's Tetrabiblos calls signs five apart disjunct, and the Arabic authors held that such signs do not behold each other at all. So Canopy names the yod as a figure but never lists the quincunx among your aspects.
Does your Sun sign decide your job?
Not in the Arabic tradition. There are no fixed jobs for Cancer sign natives and no single Aquarius job, because the old authors read profession from the Midheaven, the planet that rules it and the planets of action, not from the Sun's sign. With Cancer on the Midheaven the Moon governs the career, with Aquarius there Saturn does, and each lord's dignity decides how far it reaches. What Canopy adds for working life is timing: its elections for job applications and resumes, and for job interviews and career meetings, find the best windows in a date range you choose.