Part of Fortune and Arabic Parts (Hellenistic Lots) Calculator

Hellenistic origin, Arabic preservation

The name "Arabic Parts" is one of the most consequential mistranslations in the history of Western astrology. The technique is fully Hellenistic Greek in origin, used extensively by Vettius Valens in his 2nd-century CE Anthology and documented in Dorotheus of Sidon (1st century CE) and Paulus Alexandrinus (4th century CE). The Greek term is kleros, a Lot or allotment, with the plural kleroi. The Hellenistic astrologers who developed the technique worked it for centuries before the Arabic tradition existed.

When the Roman Empire collapsed in the West, the Greek astrological tradition migrated through Persian intermediaries into the medieval Arabic-language world. Astrologers like Mashallah (~740-815 CE), Abu Ma'shar (~787-886 CE), and al-Biruni (~973-1048 CE, author of The Book of Instruction in the Elements of the Art of Astrology, ~1029) preserved the Lots, translating the Greek texts into Arabic and elaborating the catalogue with new Lots of their own. For roughly 500 years, the Arabic tradition was the only living practice of the technique.

In the 12th and 13th centuries, Latin translators in Toledo and Sicily received the Lots back into Europe through translations from Arabic. Guido Bonatti (~1207-1296 CE), the most influential medieval European astrologer, used the Lots extensively in Liber Astronomiae, and the technique was standard practice through the Renaissance. Because Europe received the Lots from Arabic sources rather than directly from Greek, the technique became known as the "Arabic Parts," a name that survives in English even though the technique is fully Hellenistic.

The modern revival of Hellenistic astrology, led by Robert Schmidt and Robert Hand through Project Hindsight in the 1990s, restored the original Greek understanding of the Lots and reintroduced the technique to general practice. Chris Brennan's Hellenistic Astrology (2017) is the foundational modern reference, building on Schmidt's translations and codifying the technique for contemporary astrologers. Demetra George, who studied with Schmidt at the Project Hindsight conclaves, brought the technique into teaching practice through her two major books.

The 7 Hermetic Lots overview

The seven Hermetic Lots are the canonical set, traditionally attributed to Hermes Trismegistus and used as the foundational topical framework in the Hellenistic literature. Each Lot has a day formula and a night formula, the two formulas reversing the order of the non-Ascendant inputs. The seven Lots cover the major topics of a life: livelihood, vocation, desire, constraint, bravery, accomplishment, and adversity.

Chris Brennan documents the seven Hermetic Lots in chapter 18 of Hellenistic Astrology (2017), with formulas drawn from Paulus Alexandrinus, Vettius Valens, and the Schmidt translations. In Brennan's reading, the seven Lots are read together as a topical map: Fortune for the body, Spirit for the career, Eros for the relational pull, Necessity for what cannot be argued with, Courage for risk, Victory for accomplishment, and Nemesis for adversity. The full reading uses all seven as overlapping windows onto the same life.

The 7 Hermetic Lots, with formulas

Lot of Fortune

Body, livelihood, what happens TO you. Day: Asc + Moon - Sun. Night: Asc + Sun - Moon.

Lot of Spirit

Career, action, what you DO. Day: Asc + Sun - Moon. Night: Asc + Moon - Sun.

Lot of Eros

Desire, attraction, love. Day: Asc + Spirit - Venus. Night: Asc + Venus - Spirit.

Lot of Necessity

Constraints, obligations, the unavoidable. Day: Asc + Fortune - Mercury. Night: Asc + Mercury - Fortune.

Lot of Courage

Bravery, conflict, martial themes. Day: Asc + Fortune - Mars. Night: Asc + Mars - Fortune.

Lot of Victory

Accomplishment, triumph, visible success. Day: Asc + Jupiter - Spirit. Night: Asc + Spirit - Jupiter.

Lot of Nemesis

Adversity, downfall, what undoes you. Day: Asc + Fortune - Saturn. Night: Asc + Saturn - Fortune.

These are the seven attributed to Hermes Trismegistus in the Hellenistic literature. The full Valens catalogue contains over 50 additional Lots (parental Lots, Lots for marriage, Lots for illness, Lots for accusation, and many others), preserved in book IV of the Anthology and now accessible through the Schmidt Project Hindsight translations. For the technique that uses these Lots to generate life chapters, see Astrid's guide to zodiacal releasing.

Lot of Fortune: the most-cited Lot

The Lot of Fortune (Greek kleros tyches, symbol ⊕) is by far the most cited Lot in the classical literature. Chris Brennan documents that Fortune appears in Vettius Valens, Dorotheus, Paulus Alexandrinus, Firmicus Maternus, and almost every major Hellenistic source. It is the foundational Lot, the first one calculated and the most commonly read in modern Hellenistic practice. Most professional astrology software now ships with the Lot of Fortune marked by default.

Fortune signifies the physical body, livelihood, money, health, and what happens to the native (in contrast to Spirit, which signifies what the native chooses to do). In Vettius Valens's framing, translated by Robert Schmidt, Fortune is the lunar lot of received life, the realm of circumstance and material flow. Brennan calls Fortune "the lot of bodily fortune," describing the container the soul incarnates into.

The formula: for a day chart (Sun above the horizon at birth), the Lot of Fortune is Ascendant + Moon - Sun, taken modulo 360. For a night chart, the formula reverses to Ascendant + Sun - Moon. This is the sect-based reversal that applies to most Hellenistic Lots, restored to general practice through Schmidt's Project Hindsight translations in the 1990s.

The reading frame is sign, house, ruler. The sign sets the tone of livelihood (Aries Fortune reads as fortune through initiative; Cancer Fortune reads as fortune through home and nurturance). The house sets the area of life (Fortune in the 10th reads as fortune through public career; Fortune in the 2nd reads as direct material support). The ruler is the planet whose natal condition and current transits describe the agent acting on the Lot. Demetra George teaches the ruler of Fortune as one of the most important single placements in the chart for material-flow reading.

Part of Fortune by sign, brief readings

Fortune in Aries

Livelihood through initiative and action. Body finds its support through what is started, not what is received passively.

Fortune in Taurus

Steady material support and embodied livelihood. The body finds its rhythm in slow, accumulated work.

Fortune in Gemini

Livelihood through communication, learning, and the mobile life. Fortune comes through words and conversation.

Fortune in Cancer

Livelihood tied to home, family, or nurturance. The body finds support in inherited or domestic circumstances.

Fortune in Leo

Livelihood through visible expression and creative work. Fortune shows up where the native is seen.

Fortune in Virgo

Livelihood through service, skill, and craft. The body finds its support in detailed, useful work.

Fortune in Libra

Livelihood through partnership, mediation, or aesthetic work. Fortune arrives through relationship.

Fortune in Scorpio

Livelihood through depth, transformation, or shared resources. Body finds its support in committed exchange.

Fortune in Sagittarius

Livelihood through teaching, travel, or meaning-making. Fortune arrives through what is shared with others.

Fortune in Capricorn

Livelihood through structure, authority, or long-term work. The body finds its support in built results.

Fortune in Aquarius

Livelihood through community, networks, or original work. Fortune arrives through the unconventional channel.

Fortune in Pisces

Livelihood through the creative, devotional, or service-of-the-suffering channel. Body finds support in soft work.

These are sign-only readings; the full reading requires pairing the sign with the house and the ruler. In my practice with clients reading their Part of Fortune for the first time, the most useful frame is to read all three layers together: the sign for the style, the house for the area, the ruler for the agent. For the natal chart that holds your Lot of Fortune, see your free birth chart.

Lot of Spirit: career and action

The Lot of Spirit (Greek kleros daimonos) is the solar counterpart to the lunar Lot of Fortune. Where Fortune describes the body and what happens to the native, Spirit describes the soul and what the native chooses to do. Chris Brennan in Hellenistic Astrology (2017) frames Spirit as the Lot of vocation, of intentional action, of the career arc and chosen direction. In Vettius Valens's Anthology, Spirit is the second-most-cited Lot after Fortune.

The formula: Spirit reverses the Fortune formula. For a day chart, the Lot of Spirit is Ascendant + Sun - Moon (the day formula for Fortune was Ascendant + Moon - Sun; Spirit swaps the order of the luminaries). For a night chart, the formula reverses again, becoming Ascendant + Moon - Sun. The mirroring is intentional, Spirit and Fortune are the solar and lunar Lots, and the sect of the chart determines which luminary takes the primary position.

In reading practice, Spirit's sign describes the style of intentional action. Spirit in Aries reads as a vocation of initiation and bold beginning; Spirit in Virgo reads as a vocation of craft and refined service; Spirit in Sagittarius reads as a vocation of teaching, publishing, or meaning-making. The house of Spirit describes the area of life through which the vocation finds its outlet. The ruler of Spirit, like the ruler of Fortune, is the planet whose natal condition describes the agent.

Crucially, the Lot of Spirit is the starting point for Zodiacal Releasing from Spirit, the most powerful Hellenistic time-lord technique for tracking career arc across the life. Chris Brennan documents in Hellenistic Astrology (2017) that Spirit-keyed ZR is the canonical method for vocational chronology, advancing through periods of career visibility, dormancy, and major turning points. For the full ZR walkthrough using your Lot of Spirit, see Astrid's guide to zodiacal releasing.

In my practice with clients reading their Lot of Spirit, the most useful frame is to pair Spirit with Fortune as the two halves of the working life: Spirit is the calling, Fortune is the container, and the two together describe both the vocation and the material structure that supports it. For the technique that maps Spirit forward through life chapters, the zodiacal releasing calculator is the companion tool. For the year-by-year reading that pairs with both, see annual profections.

Lot of Eros: desire and love

The Lot of Eros (Greek kleros erotos) is the Venus-keyed Lot of desire, attraction, and the erotic-life domain. Where Venus in the natal chart describes the general capacity for love and aesthetic appreciation, Eros describes the specific Lot, the topical placement, for the love-life chapter of the chart. Brennan documents Eros as the third of the major Hellenistic Lots, after Fortune and Spirit, and the canonical Lot for relational timing in Hellenistic practice.

The formula: Eros is built on top of Spirit and Venus. For a day chart, Eros is Ascendant + Spirit - Venus. For a night chart, the formula reverses to Ascendant + Venus - Spirit. The dependence on the Lot of Spirit (which itself is derived from the Sun, Moon, and Ascendant) makes Eros a second-order Lot, requiring Spirit as input. In modern astrology software the calculation is automatic; the calculator above does the math for you.

In reading practice, the sign of Eros describes the style of desire and the texture of attraction. Eros in Aries reads as a magnetic pull toward what is new, bold, and directly initiated; Eros in Taurus reads as a magnetic pull toward what is embodied, steady, and sensorial; Eros in Scorpio reads as a magnetic pull toward depth, transformation, and committed exchange. The house of Eros describes the area of life through which the relational pull most strongly arrives. The ruler of Eros, like the rulers of Fortune and Spirit, names the planet whose natal condition describes the agent of the Lot's topic.

Like the Lot of Spirit, the Lot of Eros is a starting point for Zodiacal Releasing, in this case ZR from Eros, the canonical Hellenistic technique for relational-life timing. Brennan documents in Hellenistic Astrology (2017) that Eros-keyed ZR generates the chronology of major relationships across the life, with Peak Periods often correlating with the most significant relational milestones (meeting, marriage, separation, or major reorganization). For the full ZR walkthrough using your Lot of Eros, see the paired zodiacal releasing calculator.

In my practice with clients reading both Spirit and Eros, the two Lots often shape the chart's most consequential chapters. Spirit names the vocational arc, Eros names the relational arc, and the layered reading of both Lots together produces the most complete picture of the non-material life. The two ZR chronologies (Spirit and Eros) can run in parallel for the same chart, giving two independent timelines for the same person.

The other 4: Necessity, Courage, Victory, Nemesis

The remaining four Hermetic Lots (Necessity, Courage, Victory, and Nemesis) round out the canonical set attributed to Hermes Trismegistus. Each of these Lots is built on top of one of the planetary signifiers (Mercury, Mars, Jupiter, and Saturn) and adds a specific topical lens to the chart. In Chris Brennan's framing, these four are the specialized Lots that supplement the major three (Fortune, Spirit, Eros) for a more granular topical reading.

Necessity (Greek kleros anankes, the Lot of Mercury) signifies what cannot be avoided, the constraints and obligations that the chart sets up as unyielding. Chris Brennan documents Necessity as the Lot of fated obligation, the territory of the chart where the soul must accept what cannot be argued with. The formula is Asc + Fortune - Mercury by day, reversed by night. In Vettius Valens's reading, Necessity is the Lot for hardship and bound circumstance.

Courage (Greek kleros tolmes, the Lot of Mars) signifies brave action, conflict, and martial themes. The formula is Asc + Fortune - Mars by day, reversed by night. Courage points to the territory of the chart where the soul is asked to risk, where the native's boldest self lives. In modern Hellenistic practice this Lot is often read alongside Mars itself for a complete picture of the chart's assertive capacity.

Victory (Greek kleros nikes, the Lot of Jupiter) signifies accomplishment, triumph, and visible success. The formula is Asc + Jupiter - Spirit by day, reversed by night. Brennan documents Victory as the Lot of recognized achievement, the chapter of the chart where the soul's work becomes externally visible. This Lot is often read in tandem with Spirit, which names the vocation, for a complete picture of career visibility.

Nemesis (Greek kleros nemeseos, the Lot of Saturn) signifies adversity, downfall, and what undoes the native. The formula is Asc + Fortune - Saturn by day, reversed by night. Vettius Valens describes Nemesis as the Lot of unfortunate circumstance and inherited burden. In contemporary reading, the Lot is approached with care: it describes the chart's structural vulnerabilities, not specific outcomes, and is never read as deterministic event prediction.

The four specialized Lots, at a glance

Lot of Necessity

Constraint, obligation, what cannot be avoided. Day: Asc + Fortune - Mercury. Night: Asc + Mercury - Fortune.

Lot of Courage

Risk, bravery, martial themes. Day: Asc + Fortune - Mars. Night: Asc + Mars - Fortune.

Lot of Victory

Accomplishment, recognition, visible success. Day: Asc + Jupiter - Spirit. Night: Asc + Spirit - Jupiter.

Lot of Nemesis

Adversity, downfall, structural vulnerability. Day: Asc + Fortune - Saturn. Night: Asc + Saturn - Fortune.

These four are read as supplementary to the three major Lots (Fortune, Spirit, Eros). In my practice, most clients do not need the four specialized Lots until they have first integrated Fortune, Spirit, and Eros. The full seven-Lot reading is a more advanced configuration, typically used for deeper topical analysis after the foundational chart-reading work is in hand.

Day vs night formulas: the critical mechanic

Hellenistic astrology divides every chart into one of two sects: diurnal (Sun above the horizon at birth) or nocturnal (Sun below the horizon at birth). The sect of the chart is determined by whether the Sun was risen or unrisen at the moment of birth, an entirely binary distinction that produces consequential structural differences in how the chart is read. Sect is one of the most important doctrines of Hellenistic astrology, and it directly governs Lot calculation.

For the Lot of Fortune and Lot of Spirit specifically, the day-chart formula and night-chart formula are mirror images of each other. Fortune by day is Ascendant + Moon - Sun; Fortune by night becomes Ascendant + Sun - Moon (which is the day formula for Spirit). Spirit by day is Ascendant + Sun - Moon; Spirit by night becomes Ascendant + Moon - Sun (which is the day formula for Fortune). The luminaries swap positions based on the sect of the chart.

A common error in modern astrology software (and in older English-language treatments of Hellenistic technique) is to apply only the day formula to every chart, treating it as if all charts were diurnal. This produces incorrect Lot placements for roughly half of all clients (the nocturnal births), often putting Fortune in the wrong sign and the wrong house. The error compounds when ZR is then run from the incorrectly placed Lot. Robert Schmidt's Project Hindsight translations in the 1990s restored the sect-based reversal to general practice, and Chris Brennan documents the doctrine extensively in Hellenistic Astrology (2017).

Robert Hand's essay Night and Day, available in the Project Hindsight archive, walks through the full doctrine of sect with reference to the Hellenistic sources. Demetra George teaches sect as one of the first doctrines a Hellenistic student must master, before any Lot work or time-lord technique. The calculator above applies the sect-based reversal automatically, but reading the chart by hand requires noting the sect first and applying the correct formula second.

How to calculate your Lots (worked example)

The calculator above does the Lot math automatically, but the formulas themselves are simple arithmetic on ecliptic longitudes. The five-step sequence below is the one Astrid teaches in workshops, adapted from Chris Brennan's walkthrough in Hellenistic Astrology (2017) and the Robert Schmidt Project Hindsight teaching materials. In my practice with clients calculating their Lots by hand for the first time, this is the sequence that lands.

1. 1

   Determine sect

   Look at where the Sun sits in the natal chart. If the Sun is above the horizon at birth (houses 7 through 12 in whole-sign), the chart is diurnal. If below (houses 1 through 6), the chart is nocturnal. The sect of the chart determines which Lot formula to apply.

2. 2

   Apply the day or night formula

   Each Hermetic Lot has a day formula and a night formula. The two formulas reverse the order of the two non-Ascendant inputs. For Fortune: Asc + Moon - Sun by day, Asc + Sun - Moon by night. The other Lots follow the same sect-reversal pattern.

3. 3

   Add and subtract ecliptic positions (Asc + X - Y)

   Convert each input to its ecliptic longitude in degrees (0 to 359). Apply the formula, taking the result modulo 360 to stay within the zodiacal circle. The resulting degree is the Lot's longitude, used to determine its sign and house.

4. 4

   Plot the Lot's degree on the chart wheel

   Mark the Lot's longitude on the chart wheel. The sign it falls in gives the topic's flavour, the house it falls in gives the area of life, and any natal planets near the Lot intensify its expression.

5. 5

   Read the Lot's sign, house, and ruler for interpretation

   Read the Lot in three layers: sign (style of expression), house (area of life), and ruler (the planet whose natal condition and current transits describe the agent acting on the Lot's topic). Chris Brennan in Hellenistic Astrology (2017) teaches the sign-house-ruler triad as the foundational reading frame. Pair the Lot with your free birth chart for the natal floor.

How Lots feed Zodiacal Releasing

The Hellenistic Lots and zodiacal releasing are a tightly paired set of techniques. The Lots themselves describe topical placements in the natal chart, while zodiacal releasing is the time-lord technique that advances forward through life chapters starting from a Lot. Without the Lots, ZR has nowhere to start. The relationship is foundational: the Lot is the input, ZR is the output, and the two together produce the most granular and arguably the most predictive of all Hellenistic time techniques.

The Lot of Spirit feeds ZR for career chapters. Chris Brennan documents Spirit-keyed zodiacal releasing as the canonical Hellenistic method for tracking the vocational arc across the life. The L1 (Level 1) chapters generated from Spirit each describe a multi-year stretch of career development, with Peak Periods clustering at moments of greatest professional visibility and Loosing of the Bond transitions marking the most significant vocational turning points.

The Lot of Eros feeds ZR for relational chapters. The Eros-keyed ZR chronology generates a parallel timeline for the love-life domain, with chapters describing the texture of the active relational stretch and Peak Periods often correlating with major relationships beginning or ending. Brennan documents Eros-keyed ZR extensively in Hellenistic Astrology (2017), with worked examples showing how relational milestones cluster inside Eros Peak Periods.

The Lot of Fortune can also feed ZR, though it is used less often in modern practice. Fortune-keyed ZR generates the chronology of bodily fortune and material circumstance, useful for clients tracking the texture of their material life over the long haul. Demetra George teaches in Ancient Astrology in Theory and Practice (2019) that the three main ZR lots (Spirit, Fortune, Eros) produce three parallel timelines for the same chart, each opening a different topical window onto the same life.

For a complete reading of the Lot-to-ZR pipeline, calculate the Lots here, then run the chronology through the zodiacal releasing calculator. Pair the chronology with annual profections for the year-level frame and the 12-month transit calendar for the daily weather, and you have the full Hellenistic stack working together.

Crystal pairings by Lot type

Each of the seven Hermetic Lots opens a different topical window onto the chart, and the contemporary crystal-healing tradition associates each topic with specific stones. The pairings below follow Judy Hall's The Crystal Bible (2003) and Melody's Love is in the Earth (1995), cross-checked against the traditional signification of each Lot. In my practice with clients integrating Lot work into daily ritual, the paired stone often becomes a physical anchor for the symbolic work the Lot calls for.

Seven Hermetic Lots to crystal pairings

Fortune

Citrine (livelihood, abundance) or Pyrite (material success, embodied resource flow).

Spirit

Sunstone (vocational vitality, conscious will) or Lapis Lazuli (purposeful vision, the wise teacher).

Eros

Rose Quartz (desire softened into love) or Garnet (passion, magnetic pull).

Necessity

Hematite (anchoring obligation, grounded acceptance) or Smoky Quartz (slow constraint, structural patience).

Courage

Carnelian (directed bravery) or Bloodstone (navigating conflict with steady will).

Victory

Tiger's Eye (focused achievement) or Citrine (visible success, recognized accomplishment).

Nemesis

Black Tourmaline (protection from adversity) or Black Obsidian (shadow integration, structural vulnerability worked with).

These are tradition-attributed associations from the modern crystal-healing literature, not medical advice. In my practice with clients walking through Lot work, the paired stone often becomes an altar object, a pocket stone, or a meditation focus for the symbolic territory the Lot describes. Browse the full CrystalStones.com encyclopedia for more on Citrine, Sunstone, Rose Quartz, Carnelian, and any other stone above.

A brief history of the Lots

The Hellenistic Lots emerged in the 1st century BCE among the Greek astrologers of Hellenistic Egypt, building on older Babylonian and Egyptian astrological traditions. Dorotheus of Sidon (1st century CE) is the earliest detailed source, with Lot calculations preserved in his Greek Carmen Astrologicum. Vettius Valens, writing in 2nd-century CE Roman Egypt, used the Lots extensively in his nine-book Anthology, leaving worked case studies that remain among the most useful documents in the ancient astrological record.

After the fall of Rome, the Greek astrological tradition migrated east through Persian intermediaries into the medieval Arabic-language world. Mashallah (~740-815 CE), Abu Ma'shar (~787-886 CE), and al-Biruni (~973-1048 CE, author of The Book of Instruction in the Elements of the Art of Astrology, ~1029) preserved the Lots, translating the Greek texts into Arabic and elaborating the catalogue with new Lots of their own. For roughly 500 years, the Arabic tradition was the only living practice of the technique.

The Lots returned to Latin Europe through the 12th and 13th century translation movements in Toledo and Sicily. Guido Bonatti (~1207-1296 CE), the most influential medieval European astrologer, used the Lots extensively in Liber Astronomiae, and the technique was standard through the Renaissance, taught alongside transits, returns, and progressions in the major European astrological schools. The Enlightenment astrology purge ended this continuity, and the Lots went dormant in Western practice for roughly two centuries.

The modern revival began in the 1990s through Project Hindsight, the translation collective founded by Robert Schmidt and Robert Hand. Schmidt's critical editions of Vettius Valens, Paulus Alexandrinus, and Dorotheus, published from 1994 onward, made the Hellenistic Lots accessible in English for the first time in 1,500 years. Demetra George brought the technique into teaching through Astrology and the Authentic Self (2008) and Ancient Astrology in Theory and Practice (2019). Chris Brennan's Hellenistic Astrology: The Study of Fate and Fortune (2017), built on his decade of work at the Hellenistic Astrology Conference and The Astrology Podcast, codified the Lots for contemporary practice. Brennan's book is now the standard modern reference, and the Lots are once again part of routine Hellenistic chart reading worldwide.

Frequently asked questions

Common questions Astrid receives from clients new to the Hellenistic Lots, with the same answers indexed in the FAQ schema on this page.