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530 concepts
A
- Aberration
- A small apparent shift in direction caused by the observer’s motion and the finite speed of light.
- Accidental dignity
- A planet's traditional condition from chart circumstances—such as house category, motion, and solar proximity—rather than its essential zodiacal dignities.
- Activation
- A planetary position assigned to a Human Design gate; one activation alone does not necessarily define a center.
- Activation Sequence
- The Gene Keys sequence of Life’s Work, Evolution, Radiance and Purpose, used for contemplation of personal foundations.
- Ajna center
- Human Design’s symbolic center for conceptualization and mental processing, not a neurological assessment.
- Akshavedamsa
- The D45 Jyotish chart, derived from 45 portions of each zodiac sign under a declared rule.
- Almanacs, divisions & periods
- Panchanga, vargas and Vimshottari retain their tradition-specific rules while cross-linking to the general methods branch.
- Altitude
- An object’s angle above or below the horizon; here this is different from a location’s height above sea level.
- Ambiguous local time
- A clock reading repeated when clocks move backward; an offset or fold choice is needed to identify the instant.
- Ancient & historical contexts
- Texts and objects from distinct periods; source-specific transmission belongs in separately labelled historical connections.
- Angular line
- An astrocartography line marking locations where a selected planet rises, sets, culminates or reaches lower culmination at the reference instant.
- Angular, succedent, and cadent houses
- The traditional grouping of houses 1, 4, 7 and 10 as angular; 2, 5, 8 and 11 as succedent; and 3, 6, 9 and 12 as cadent.
- Annual Nine Star number
- The number from 1 through 9 assigned to the effective year by the selected annual Nine Star rule.
- Annual profection
- A traditional timing method advancing the starting sign by one sign for each completed year of age.
- Annual profections / zodiacal releasing / firdaria
- Annual profections and zodiacal releasing are associated with surviving Hellenistic material and its modern reconstruction.
- Antardasha
- A subperiod within a major dasha period; dates depend on the selected system and year-length convention.
- Antares
- The IAU-recognised proper name for Alpha Scorpii A, a bright stellar component in Scorpius.
- Antiscia
- Mirror positions across the Cancer–Capricorn solstitial axis; in tropical longitude, the reflection is 180° minus the original longitude.
- Anuradha
- The seventeenth mansion, also appearing as Anūrādhā in the cited Vedic hymn, where it is associated with Mitra.
- Apheta
- In Valens's Anthology, the star or point from which a reckoning of time begins.
- Apparent position
- A direction corrected for observational effects such as aberration and gravitational light deflection; the precise correction set must be specified.
- Applying aspect
- An aspect currently moving toward exactness, judged from the bodies’ relative motion; a later station can interrupt it.
- Aquarius
- The zodiac sign spanning 300° up to 330° from the selected zodiac’s origin; constellation boundaries differ.
- Aries
- The zodiac sign spanning 0° up to 30° from the selected zodiac’s origin; constellation boundaries differ.
- Ascendant
- The zodiac point on the eastern horizon at the chart’s time and location; the rising sign contains that point.
- Ashtakavarga
- A Jyotish method that counts, for each of the seven planets and for the Lagna, in which signs it is benefic with respect to each of eight references: the seven planets and the Lagna.
- Ashtakuta
- The traditional North Indian matching of two Moons by eight factors that give at most 36 points together: Varna 1, Vashya 2, Tara 3, Yoni 4, Graha Maitri 5, Gana 6, Bhakoot 7 and Nadi 8.
- Ashwini
- The 1st lunar mansion in the modern Ashwini-first 27-division sequence.
- Aspect
- A specified angular relationship between chart positions, usually measured in zodiac longitude; different schools select different angles.
- Asteroid / centaur / dwarf-planet astrology
- Minor-body astrology expanded as observations and usable ephemerides made more objects accessible.
- Astrocartography
- A map showing locations where selected bodies occupy chart angles at a specified instant; interpretation is a separate astrological step.
- Astrology
- A family of historical and contemporary practices that interprets celestial positions, cycles or calendar patterns in relation to earthly affairs and human experience.
- Astrometric position
- A direction corrected for light-travel time but not all apparent-position effects; it is not interchangeable with apparent coordinates.
- Atmospheric refraction
- The bending of light by Earth’s atmosphere, which shifts a celestial body’s apparent direction and usually makes it appear higher above the horizon.
- Authored calendar syntheses
- Modern calendrical constructions have identifiable authors and protocols; distinguish them from living Indigenous calendar traditions.
- Authority
- Human Design’s category for a recommended decision process, derived from center patterns; it does not replace evidence or professional advice.
- Ayanamsha
- The angular offset between tropical and a selected sidereal zodiac; different reference conventions yield different offsets.
- Azimuth
- Direction around the local horizon.
- Aztec Tonalpohualli / other Mesoamerican counts
- The Mexica tonalpohualli belongs to the wider Mesoamerican family of 260-day ritual counts.
B
- Babylonian omen and zodiac traditions
- Babylonian celestial practice includes multiple genres across time.
- Backend flag
- Machine-readable settings reporting which calculation model or coordinate options were requested or actually used.
- Barycentric
- Measured from a system’s center of mass, such as the Solar System’s barycenter.
- Base
- One of five subdivisions within a Human Design tone; its fine angular scale makes precise birth time important.
- Bayer designation
- A star identifier using a Greek or Latin letter and constellation name, such as Alpha Tauri; it is not a spiritual ranking.
- BaZi / Four Pillars / Saju
- Four Pillars arranges the year, month, day and double-hour into stem–branch pairs.
- Benefic
- A traditional label, especially for Venus and Jupiter, describing an interpretive tendency rather than guaranteed good events.
- BG5 / Penta / DreamRave / animal-plant design
- BG5, Penta, DreamRave and the Design of Forms are extensions within Ra Uru Hu’s teaching corpus.
- Bhinnashtakavarga
- The Ashtakavarga of one planet (or of the Lagna): for each of the twelve signs, the number of points, from 0 to 8, which the planet has there, one from each of the eight references that counts the sign as a benefic place for it.
- Bhutanese / Mongolian / regional Tibetan calendars
- Bhutanese and Mongolian calendars belong to the wider history of Tibetan-derived calendrical learning while retaining regional versions.
- Bing stem
- Bing (丙) is the third Heavenly Stem, classified as Yang Fire.
- Black Moon Lilith
- An astrological lunar-apogee point, with several calculation conventions; it is distinct from asteroid 1181 Lilith and hypothetical dark-moon models.
- Body palace
- An additional marker occupying one of the twelve existing Zi Wei Dou Shu palaces.
- BodyGraph
- Human Design’s diagram of nine centers connected by channels; planetary gate assignments determine its colored structure.
- Bound
- In traditional astrology, one of the unequal degree-ranges within a zodiac sign whose assigned ruler is determined by the selected bounds (terms) table.
- Burmese Mahabote / Thai / Balinese pawukon / other regional systems
- This is a regional discovery entry, not one astrological system.
C
- Calendar Round
- The combination of the 260-day and 365-day counts, repeating after 18,980 days, approximately 52 years.
- Calendars & stem–branch methods
- Shared cycles support several practices; a calendar designation is not itself a personality interpretation.
- Cancer
- The zodiac sign spanning 90° up to 120° from the selected zodiac’s origin; constellation boundaries differ.
- Capricorn
- The zodiac sign spanning 270° up to 300° from the selected zodiac’s origin; constellation boundaries differ.
- Cardinal signs
- Aries, Cancer, Libra and Capricorn; a traditional grouping associated with seasonal turning points in the tropical zodiac.
- Cazimi
- A traditional label for a planet in exceptionally close conjunction with the Sun, treated in some Western sources as distinct from combustion.
- Chandra Lagna
- A Jyotish reference that counts the natal Moon's sign as the first house or position.
- Channel
- A specified pair of BodyGraph gates joining two centers; the channel is defined when both gates are activated.
- Chart frames & transformations
- Derived longitudes and alternative coordinate or classification frames; each must disclose its calculation convention.
- Chart geometry & conventions
- Mathematical transformations, houses, aspects and classification rules; accuracy and interpretive validity are separate questions.
- Charts & divination boards
- Zi Wei / Tử Vi and the three cosmic-board traditions are separate methods, not interchangeable presets.
- Chaturthamsa
- The D4 Jyotish chart, derived from 4 portions of each zodiac sign under a declared rule.
- Chaturvimsamsa
- The D24 Jyotish chart, derived from 24 portions of each zodiac sign under a declared rule.
- Chen branch
- Chen (辰) is the fifth Earthly Branch, paired with Dragon and assigned 07:00–09:00 in the hour table.
- Chinese & East Asian traditions
- Calendrical, chart and divination traditions with distinct regional histories and conventions.
- Chinese lunisolar zodiac
- The Chinese calendar coordinates lunar months with the solar year through intercalation.
- Chitra
- The fourteenth mansion, bearing a name associated with brightness and variety; the cited Vedic hymn names Tvaṣṭṛ.
- Chol Q’ij
- The K’iche’ name for the living sacred day count, whose cultural practice should not be reduced to a generic birthday label.
- Chou branch
- Chou (丑) is the second Earthly Branch, paired with Ox and assigned 01:00–03:00 in the hour table.
- Chronocrator
- In Valens's Anthology, a star that rules a period of time.
- Circumpolarity
- The condition in which a body’s daily path remains above the horizon at a specified location, instead of rising and setting.
- Civil date
- A year, month and day in the calendar used for ordinary civil affairs.
- Civil day
- A date interval governed by the local civil clock and calendar.
- Collection of light
- Two significators apply to a third planet; in Lilly's description, the heavier collecting planet and reception conditions can connect their affairs.
- Color
- One of six subdivisions within a Human Design line; this technical use does not mean visible color.
- Combustion (astrological)
- A traditional condition in which a planet is judged to be too near the Sun under a named rule, commonly distinguished from an exceptionally close cazimi conjunction and from the wider area called under the beams.
- Completely open center
- A BodyGraph center with no activated gates, distinguished here from an undefined center that has activations.
- Composite chart
- A relationship chart built from corresponding planetary and angular midpoints of two charts, rather than a real birth instant.
- Conjunction
- An aspect near 0° separation in the chosen coordinate measure; matching longitude does not guarantee physical closeness.
- Constellational /13-sign / Ophiuchus
- Constellational astrology uses actual sky regions or selected star patterns instead of twelve equal thirty-degree signs.
- Contemporary spiritual overlays
- Attribute soul-origin and related narratives to their sources; astronomical contacts do not establish those identities.
- Contra-antiscia
- Points opposite the antiscia; a distinct geometric relationship whose interpretive use varies.
- Contra-parallel
- Two objects with nearly equal declination magnitudes on opposite sides of the celestial equator.
- Coordinate frame
- The chosen origin and axes used to describe a position.
- Cosmobiology / midpoint schools
- Cosmobiology is particularly associated with Reinhold Ebertin's publishing and teaching.
D
- Dasamsa
- The D10 Jyotish chart, derived from 10 portions of each zodiac sign under a declared rule.
- Dasha
- An Indian astrological period system assigning successive intervals to planets or signs; several different systems exist.
- Dasha-lord reference
- Atlas label for a dasha lord used as temporary lagna in subperiod analysis.
- Davison chart
- A relationship chart calculated for an intermediate time and geographic position between two births, under a specified midpoint convention.
- Day Master
- In BaZi, the Heavenly Stem of the day pillar, used as a central reference in interpretation.
- Daylight saving time
- A seasonal legal clock adjustment whose dates and rules depend on place and year.
- Decan
- In a zodiacal astrological table, one of three ten-degree divisions of a sign, also called a face; Egyptian stellar decans are a historically distinct calendrical and observational concept.
- Decennials
- In Vettius Valens's Anthology, a way of cutting a life into periods of 10 years 9 months, which is 129 months, the total of the seven stars' minimum periods counted in months.
- Declination
- An object’s angle north or south of the celestial equator, from −90° to +90°.
- Defined center
- A BodyGraph center connected through at least one complete activated channel; “defined” is structural, not a rating of ability.
- Delta T
- Terrestrial Time minus UT1, usually expressed in seconds; historical values involve reconstruction and modelling.
- Descendant
- The zodiac point on the western horizon, opposite the Ascendant.
- Design activations
- In Human Design, the prenatal assignments found when the Sun was 88° earlier in longitude, not a fixed 88-day subtraction.
- Detriment
- A traditional debility assigned when a planet occupies a sign opposite one of its domiciles; Venus in Aries is an example in Lilly’s table.
- Ding stem
- Ding (丁) is the fourth Heavenly Stem, classified as Yin Fire.
- Direct Officer
- The Ten Gods relation for a stem that controls the Day Master and has opposite polarity.
- Direct Resource
- The Ten Gods relation for a stem that produces the Day Master and has opposite polarity.
- Direct Wealth
- The Ten Gods relation for a stem controlled by the Day Master and of opposite polarity.
- Divisional charts / vargas
- Vargas are divisional classifications within Indian horoscope practice.
- Domicile
- A zodiac sign traditionally assigned to a planet as its own domain; a planet is in domicile when it occupies one of those signs.
- Double-hour
- One of twelve traditional daily time divisions, each roughly two modern hours; the clock basis must be stated.
- Draconic
- Draconic astrology appears in modern practitioner literature associated with writers including Dennis Elwell and Pam Crane.
- Draconic chart
- A chart rotating longitudes so the chosen north lunar node becomes 0° Aries; soul-related readings are interpretive claims.
- Draconic-to-natal contact
- An angular relationship between a position in a draconic chart and a position in the unrotated natal chart.
- Dreamspell
- A modern spiritual calendar framework; its counting conventions are distinct from historical and living Maya calendars.
- Dreamspell /13 Moon / Galactic Signature
- Dreamspell is a modern creation associated with José and Lloydine Argüelles, developed around 1990–1991.
- Drekkana
- A Jyotish chart mapping the three ten-degree portions of each zodiac sign.
- Drik calculation
- Calculation using observed or modern astronomical positions; it differs from retaining an older traditional mean-motion model.
- Dvadasamsa
- The D12 Jyotish chart, derived from 12 portions of each zodiac sign under a declared rule.
E
- Earth phase
- In BaZi’s Five Phases, Earth corresponds to Wu (戊, Yang Earth) and Ji (己, Yin Earth).
- Earthly Branch
- One of twelve cyclical labels associated with animals and other correspondences; it is not a physical astronomical branch.
- Eating God
- The Ten Gods relation for a stem produced by the Day Master and sharing its polarity.
- Ecliptic
- The reference plane based on Earth’s orbit, projected onto the sky; zodiac longitudes are measured around it.
- Ecliptic latitude
- An object’s angular distance north or south of the ecliptic, distinct from geographic latitude.
- Ecliptic longitude
- An angle around the ecliptic, from 0° to 360°, measured from the selected zodiac origin.
- Effective year
- The year selected for a calculation after its year-boundary rule has been applied.
- Ego center
- Human Design’s symbolic will and material-resources center, counted among its four motors.
- Egyptian decans / stellar calendars
- Egyptian stellar timekeeping and decanal imagery precede the later Greco-Roman zodiacal syntheses.
- Electional / Muhurta
- Electional astrology selects a proposed starting time for an activity.
- Element / animal / mewa / parkha overlays
- Tibetan elemental astrology adds animal cycles, mewa numbers and parkha trigrams to calendrical reckoning.
- Elemental & cycle overlays
- Element, animal, mewa and parkha components require their own documented rules.
- Ephemeris
- A table or numerical model giving astronomical positions at specified times.
- Epistemology
- The philosophical study of knowledge, justification and the limits of evidence.
- Epoch
- A reference instant for a catalogue, coordinate model, or orbital elements; not necessarily the observation date.
- Equal houses
- Twelve 30° houses; in the usual Ascendant-based version, house one starts at the Ascendant’s exact degree.
- Equation of time
- The difference between apparent and mean solar time; sign conventions differ, so a formula must specify which is subtracted.
- Esoteric / Alice Bailey / seven rays
- Alice Bailey's esoteric astrology belongs to a modern spiritual teaching corpus maintained by Lucis Trust.
- Essential dignity
- A planet’s traditional condition by zodiacal position, assessed with a named table of domicile, exaltation, triplicity, bounds (terms), and faces and, where applicable, its day/night rule.
- Etymology
- The study or account of a word's history: its earlier forms, meanings, related words and passage between languages.
- Exact transit
- An instant when a moving body's longitude reaches a declared aspect angle from a fixed natal target, within the solver's stated numerical tolerance.
- Exaltation
- A traditional essential dignity assigned to a planet in a particular sign.
F
- Face (astrological)
- A traditional ten-degree division of a zodiac sign used as a minor essential dignity in a specified astrological table; it is also called a decan in this zodiacal sense.
- Firdaria
- In Persian and medieval Arabic astrology, fixed periods of a life governed in turn by the seven planets and the two lunar nodes, in a 75-year cycle that starts with the Sun in a day birth and the Moon in a night birth.
- Fire phase
- In BaZi’s Five Phases, Fire corresponds to Bing (丙, Yang Fire) and Ding (丁, Yin Fire).
- Five phases
- Wood, Fire, Earth, Metal and Water as cyclical symbolic processes in Chinese traditions, rather than modern chemical elements.
- Fixed star
- A historical term distinguishing background stars from wandering planets; stars still have proper motion and changing apparent coordinates.
- Fixed-star / Behenian / parans
- Fixed-star astrology contains multiple methods rather than one extra layer of zodiac degrees.
- Fomalhaut
- The IAU-recognised proper name for Alpha Piscis Austrini A, a bright stellar component in Piscis Austrinus.
- Foundations & evidence
- Learn the coordinates, calendars, chart conventions and kinds of evidence used across the atlas.
- Four Pillars
- A chart using stem–branch pairs for birth year, month, day and double-hour; calendar and clock conventions matter.
- Friend
- The Ten Gods relation for a stem of the same phase and same polarity as the Day Master.
G
- G center
- Human Design’s symbolic center of identity, love and direction, not a measured anatomical structure.
- Galactic / whole-sky astrology
- Galactic and whole-sky astrology extends astrological attention to objects beyond the familiar planets.
- Galactic Center
- The central region of the Milky Way; this catalogue uses the direction of the compact radio source Sagittarius A*.
- Gate
- One of sixty-four Human Design zodiac sectors associated with an I Ching hexagram and a BodyGraph location.
- Gemini
- The zodiac sign spanning 60° up to 90° from the selected zodiac’s origin; constellation boundaries differ.
- Gene Keys
- Richard Rudd’s contemplative symbolic framework of sixty-four keys; it does not analyze a person’s DNA.
- Gene Keys / Golden Path / expanded spheres
- Richard Rudd describes Gene Keys as emerging from his study with Ra Uru Hu and years of contemplation of the sixty-four hexagrams.
- Generator
- A Human Design type with a defined Sacral center; the system associates it with responding rather than a medical energy level.
- Geng stem
- Geng (庚) is the seventh Heavenly Stem, classified as Yang Metal.
- Geocentric
- Measured from Earth’s center rather than from a particular observer on its surface.
- GMT correlation
- The Goodman–Martínez–Thompson alignment of Maya and Julian day counts; this engine uses the constant 584283.
- Gochara
- Jyotish transit analysis: moving grahas read against natal reference points, including Moon and Lagna.
- Golden Path
- The Gene Keys sequence framework for contemplating purpose, relationships and contribution; it is a teaching path, not a fate calculation.
- Graha
- An astrological “planet” or seizer; the classical nine include the Sun, Moon and lunar nodes, not only physical planets.
- Graha Drishti
- Planetary aspects in Jyotish, with directional relationships determined by the graha; distinct from rashi drishti.
- Great Attractor
- An extended concentration of matter associated with large-scale galaxy motions, represented in this catalogue by a selected reference direction.
- Great circle
- A circle dividing a sphere into equal halves; spherical local-space maps extend a planetary direction along such a path.
- Gregorian calendar
- The civil calendar used by this form; its leap-year rule differs from the older Julian calendar.
- Gui stem
- Gui (癸) is the tenth Heavenly Stem, classified as Yin Water.
- Gulika Kalam
- The Saturn-associated eighth of daylight in a traditional weekday sequence.
H
- Haab
- A 365-day Maya calendar with eighteen twenty-day months plus a five-day period.
- Hai branch
- Hai (亥) is the twelfth Earthly Branch, paired with Pig and assigned 21:00–23:00 in the hour table.
- Hanging gate
- An activated Human Design gate that is alone in its prescribed channel because its harmonic partner gate is not activated in the selected chart view.
- Harmonic / vibrational approaches
- Modern harmonic astrology is closely associated with John Addey and later authors such as David Hamblin.
- Harmonic chart
- A derived longitude display: multiply each selected ecliptic longitude by an integer h and reduce it modulo 360°.
- Harmonic orb
- Angular deviation measured in the harmonic chart; near the selected exact aspect, divide by h to recover the corresponding natal deviation.
- Harmonic triangle
- Cochrane uses this for three planets mutually aspected in one harmonic.
- Harmonic-pattern prominence
- Cochrane's two rankings count four-planet patterns or unequally weighted pairs.
- Hasta
- The thirteenth mansion, named with the Sanskrit word for a hand and associated with Savitṛ in the cited Vedic hymn.
- Head center
- Human Design’s symbolic inspiration and questioning center; its chart status does not measure the brain.
- Heavenly Stem
- One of ten labels paired in sequence with the twelve Earthly Branches to form a sixty-step cycle.
- Heliocentric
- Measured from the Sun’s center; Earth has a genuine orbital position in this frame.
- Hellenistic / traditional
- Hellenistic astrology is represented by surviving Greek-language authors including Ptolemy and Vettius Valens.
- Historical & Western traditions
- Browse ancient Near Eastern and Mediterranean contexts alongside later and modern Western schools.
- Hologenetic Profile
- A Gene Keys arrangement of planetary key-and-line assignments used for contemplation; its name does not imply genetic testing.
- Hora chart
- A Jyotish divisional chart based on the two halves of each zodiac sign.
- Horary / interrogations / Prashna
- Question-based approaches with distinct chart conventions and judgement rules.
- Hour angle
- An object’s angular position relative to the observer’s meridian; it changes as Earth rotates.
- House
- One of twelve chart divisions used for life topics.
- House cusp
- A house boundary in the selected system; being near a cusp does not by itself create a blended zodiac sign.
- House overlay
- A placement of one chart's body within another chart's houses; the receiving chart supplies the house boundaries.
- Human Design
- A modern symbolic system combining a zodiac gate map with a nine-center graph; its personality classifications are not biological measurements.
- Human Design / Rave astrology
- Human Design was introduced by the teacher known as Ra Uru Hu.
- Human Design & related systems
- Read the original system, its documented extensions and later reinterpretations with their authors identified.
- Human Design definition
- The connected groups of defined centers in a BodyGraph; splits count disconnected groups, not psychological fragmentation.
- Human Design profile
- A pair of line numbers from the birth and design Sun placements, such as 4/6, linked to the system’s role descriptions.
- Human Design type
- A category derived from BodyGraph connections; this engine distinguishes Manifesting Generator within the Generator family.
- Hurting Officer
- The Ten Gods relation for a stem produced by the Day Master and of opposite polarity.
- Hypothetical Uranian point
- A mathematically modelled point used in the Hamburg School, such as Cupido or Hades; these are not confirmed physical planets.
I
- ICRS
- A stable celestial reference system tied to distant radio sources, close to but distinct from the J2000 equatorial frame.
- Imum Coeli
- The point opposite the Midheaven, associated with the lower meridian intersection.
- Indirect Resource
- The Ten Gods relation for a stem that produces the Day Master and shares its polarity; traditional aliases include Partial Seal, Inverted Food and Owl Spirit.
- Indirect Wealth
- The Ten Gods relation for a stem controlled by the Day Master and sharing its polarity.
- Ingress
- An entry into a specified sign or angular sector, found by locating the boundary-crossing time.
- Interpretation
- A tradition-specific reading of calculated facts.
- IQ, EQ and SQ
- Gene Keys sphere labels mapped to selected birth and design placements; they are not intelligence or psychological test results.
J
- J2000
- A standard epoch at 12:00 Terrestrial Time on 1 January 2000, often used for celestial coordinates.
- Jaimini / chara dashas
- Jaimini astrology names a body of techniques transmitted through terse sutras, commentaries and modern teaching.
- Jaimini astrology
- An Indian astrological family associated with Jaimini teachings, including distinctive significators and sign-based timing methods.
- Janma Rashi
- The zodiac sign occupied by the Moon in the birth chart, used as a reference in gochara.
- Ji stem
- Ji (己) is the sixth Heavenly Stem, classified as Yin Earth.
- Jia stem
- Jia (甲) is the first Heavenly Stem, classified as Yang Wood.
- Jie (month-opening solar term)
- One of the twelve solar terms that open a month of the Chinese solar calendar: the instants when the Sun's apparent longitude is 315°, 345°, 15° and so on in steps of 30°, beginning with Lichun.
- Ju Men (Zi Wei)
- A principal Zi Wei chart star associated by Sean Chan with speech, scrutiny and critical attention.
- Julian date
- A continuous astronomical day count with fractions for time of day.
- Jyeshtha
- The eighteenth mansion, bearing a name meaning eldest or foremost and traditionally associated with Indra.
- Jyotish
- Indian astronomical and astrological traditions; the label covers multiple schools rather than one universal calculation recipe.
- Jyotish / Parashari family
- Jyotish is a broad Indian astral discipline; the Parashari label identifies a family of horoscope techniques associated with the authority of Parashara.
K
- Kālacakra
- A Buddhist tantric tradition and body of teaching conventionally called Wheel of Time.
- Karaka
- A significator: a planet or other factor assigned to represent a topic under a specified Indian astrological rule.
- Karana
- Half a tithi, spanning 6° of Moon–Sun longitude difference; traditional names follow a repeating and fixed sequence.
- Ketu
- The south lunar node in Indian astrology, opposite Rahu; a calculated point, not a material planet.
- Khavedamsa
- The D40 Jyotish chart, derived from 40 portions of each zodiac sign under a declared rule.
- Koch houses
- A time-based quadrant house method with high-latitude limits; its cusps differ from Placidus.
- Krishnamurti Paddhati
- An Indian system emphasizing stellar and subdivision rulers with particular house and sidereal conventions.
- Krishnamurti Paddhati (KP)
- Krishnamurti Paddhati takes its name from K.
- Kuta matching
- Traditional Indian relationship-comparison schemes that evaluate named factors, commonly using the two natal Moons; rules and scoring vary.
L
- Lagna
- The Ascendant in Indian astrology, usually expressed in the chosen sidereal zodiac.
- Lahiri ayanamsha
- A widely used Indian sidereal reference convention; selecting it changes zodiac longitudes, not the physical sky.
- Leap month
- An additional month inserted by a calendar’s intercalation rules.
- Leap second
- An adjustment to UTC used to keep civil time close to Earth-rotation time; it is unrelated to a leap day.
- Leo
- The zodiac sign spanning 120° up to 150° from the selected zodiac’s origin; constellation boundaries differ.
- Lian Zhen (Zi Wei)
- A principal Zi Wei chart star that Sean Chan describes through the tension between principles and emotional intensity.
- Libra
- The zodiac sign spanning 180° up to 210° from the selected zodiac’s origin; constellation boundaries differ.
- Lichun
- The solar term at 315° apparent solar longitude, called Lìchūn in Mandarin and Risshun in Japanese.
- Life’s Work
- The Gene Keys sphere mapped to the birth Sun’s key and line, used as a symbolic contemplation focus.
- Light-time correction
- Allowance for the time light takes to travel from an object to the observer.
- Line
- One of six divisions within a Human Design gate; it is an angular subdivision rather than a physical line on the body.
- Local apparent solar time
- Time reckoned from the actual Sun’s daily position, differing from mean solar time by the equation of time.
- Local horizon
- The observer’s horizontal reference plane, perpendicular to the local vertical; in horizon coordinates it supplies the zero level for altitude.
- Local mean solar time
- A clock based on a uniformly moving mean Sun at the location’s longitude; it omits legal timezone and daylight-saving rules.
- Local-space astrology
- A locational method mapping the horizon directions of bodies from a chosen place, rather than only zodiac longitudes.
- Locational / relocation / astrocartography / local-space
- Locational astrology predates its modern computerized maps.
- Long Count
- A Maya system counting days through units including k’in, uinal, tun, katun and baktun; correlation links it to other calendars.
- Longitude speed
- How quickly ecliptic longitude is changing, in degrees per day; negative values indicate retrograde motion in that frame.
- Loosing of the bond
- In zodiacal releasing, the rule for a period that outlasts one full circuit of the twelve signs: the rest of its time starts again from the sign opposite the period's own sign instead of from the sign itself.
- Lord of the year
- In annual profections, the traditional ruler of the zodiac sign reached by the completed-age count.
- Losar
- A Tibetan name for New Year, observed through different calendars and customs across Himalayan communities.
- Lot (Arabic part)
- A point on the zodiac found by laying the distance between two bodies off from a third point, usually the Ascendant, which is Start + B − A on the circle of longitudes.
- Lot of Fortune
- A point found by laying the distance from the Sun to the Moon off from the Ascendant, which is Ascendant + Moon − Sun by day.
- Lot of Spirit
- Valens’s Daimon: a point found from the same two bodies as Fortune but in the reverse order, Ascendant + Sun − Moon by day and Ascendant + Moon − Sun by night.
- Lowest harmonic
- A search rule that retains the smallest matching harmonic for a planetary combination, reducing listings of related higher harmonics.
- Luck pillars
- In BaZi, the cycles of ten years that follow the four pillars of birth.
- Lunar apogee
- The farthest point of a lunar orbit from Earth; an apogee direction is a geometric point, not another moon.
- Lunar New Year
- The first day of a new year in a lunar or lunisolar calendar.
- Lunar return
- A chart for the instant the Moon reaches its natal ecliptic longitude again in the selected zodiac, conventionally read for the cycle to its next return.
- Lunisolar calendar
- A calendar combining lunar months with adjustments that keep the year aligned with the seasons.
M
- Magha
- The tenth mansion in the common 27-nakshatra sequence, associated with the ancestors in the cited Vedic hymn.
- Main qi
- In the named BaZi branch table, the hidden stem explicitly designated as the branch’s principal qi.
- Malefic
- A traditional label, especially for Mars and Saturn, describing an interpretive tendency rather than guaranteed harm.
- Mangal dosha
- A rule about where Mars stands in a birth chart (in certain houses counted from the Lagna, the Moon or Venus) that some matching traditions read as a condition to be matched or cancelled.
- Manifesting Generator
- A Generator subtype with a defined Sacral and a motor connected to the Throat through defined channels.
- Manifestor
- A Human Design type with an undefined Sacral and a motor-to-Throat connection through defined channels.
- Mao branch
- Mao (卯) is the fourth Earthly Branch, paired with Rabbit and assigned 05:00–07:00 in the hour table.
- Mars
- The fourth planet from the Sun, a rocky world whose apparent position is tracked in natal and transit charts.
- Maya counts & calendar keeping
- Read the sacred count and the Haab, Long Count and Calendar Round as distinct connected structures.
- Maya Haab / Long Count / Calendar Round
- The Maya calendar combines cycles with a count of elapsed days.
- Maya Tzolk’in / Chol Q’ij
- The 260-day sacred count is a living Maya tradition, not merely an archaeological curiosity.
- Mean node
- A smoothed model of the lunar node, omitting short-period oscillations.
- Meridian transit
- A body’s crossing of the observer’s meridian, at upper or lower transit on opposite sides of the celestial pole; alignment does not imply visibility.
- Mesoamerican calendars & divination
- Living and historical calendrical traditions deserve their own community names and methods; they are not ancestors by default of modern calendar syntheses.
- Metal phase
- In BaZi’s Five Phases, Metal corresponds to Geng (庚, Yang Metal) and Xin (辛, Yin Metal).
- Methods & applications
- Choose a question or construction, then inspect the schools and conventions that use it.
- Mexica & other regional counts
- Explore the Tonalpohualli and regional counts without assuming Maya names, correlations or interpretations apply unchanged.
- Midheaven
- The ecliptic’s intersection with the meridian associated with upper culmination; it need not be the whole-sign tenth-house boundary.
- Midpoint
- One of two opposite angular halfway points between two zodiac positions; the chosen branch must be recorded.
- Midpoint structure
- A planet's specified angular relationship to the midpoint of two others; report the midpoint convention, aspect and orb.
- Ming palace
- Zi Wei Dou Shu’s reference palace, located using the resolved lunar month and birth hour.
- Modern psychological / evolutionary
- Psychological and evolutionary astrology are related modern approaches, not synonyms.
- Modern syntheses & adjacent practices
- Modern authored systems, contemporary spiritual overlays and related symbolic practices.
- Modern Western schools
- Named modern approaches with differing zodiac choices, symbolic languages and interpretive assumptions.
- Moon
- Earth’s natural satellite; its changing position relative to the Sun produces the familiar lunar phases.
- Moshier ephemeris
- An analytical planetary model available as a Swiss Ephemeris fallback when the appropriate data files are unavailable.
- Mrigashira
- The 5th lunar mansion in the modern Ashwini-first 27-division sequence.
- Muhurta
- Selecting a time for an intended activity under Indian astrological rules; the word can also denote a traditional time unit.
- Mundane / ingress / financial / medical astrology
- Mundane astrology applies celestial symbolism to collective affairs.
- Mutable signs
- Gemini, Virgo, Sagittarius and Pisces; the traditional group between fixed signs and the next seasonal turning point.
N
- Nadi / Bhrigu / Lal Kitab / regional lineages
- This registry entry groups traditions that need separate articles rather than implying a single school.
- Nakshatra
- A lunar mansion; the common equal scheme divides the sidereal zodiac into 27 sectors of 13°20′.
- Natal chart
- A chart calculated for a person’s birth time and place, used as a starting point for astrological interpretation.
- Neptune
- The eighth planet from the Sun, an ice giant with a slow apparent passage through the zodiac.
- Nine Star Ki
- A family of divinatory calendar practices relating nine numbered designations to qualities and directions.
- Nine Star Ki / Kyūsei
- Nine Star Ki is a Japanese-associated cycle practice encountered today through several teaching lineages.
- Node-relative frame
- A longitude frame measured from a chosen lunar node.
- Nonexistent local time
- A clock reading skipped when clocks move forward; it cannot represent an instant under those local rules.
- North lunar node
- The point where the Moon’s orbit crosses the ecliptic from south to north.
- Numerology / tarot-astrology / I Ching birthday overlays
- Numerology, tarot correspondences and I Ching birthday overlays have different histories and should not be presented as one ancient science.
- Nutation
- Smaller periodic variations in Earth’s axis orientation superimposed on precession.
O
- Objects & sky layers
- Selected stars, minor bodies and deep-sky reference directions, with observation kept distinct from symbolic overlays.
- Omitted lunar date
- A numbered lunar date with no corresponding civil day in the selected calendar.
- Onmyōdō / Sukuyō / 27–28 mansion systems
- Onmyodo, Buddhist Sukuyodo and mansion systems should not be collapsed into one Japanese zodiac.
- Opposition
- An aspect near 180° separation in zodiac longitude.
- Orb
- The permitted distance from an exact aspect.
- Osculating apogee
- The apogee of an instantaneous fitted lunar orbit; its changes include short-period effects and differ from the mean apogee.
P
- Paksha
- A lunar fortnight: the waxing half is Shukla Paksha and the waning half is Krishna Paksha.
- Palace
- A chart compartment representing a topic in systems such as Zi Wei Dou Shu; it is not automatically a Western house.
- Panchanga
- An Indian almanac’s five principal factors: weekday, tithi, nakshatra, yoga and karana; daily use requires local boundary rules.
- Panchanga / drik calculation
- Panchanga means a five-part almanac framework.
- Panchanga yoga
- One of 27 divisions of the sum of sidereal Sun and Moon longitudes; distinct from other meanings of yoga.
- Parallax
- A change in apparent direction caused by observing from different positions.
- Parallel of declination
- Two objects at nearly the same declination, using a stated tolerance.
- Paran
- A locally timed relationship in which two bodies reach named horizon or meridian events together or within a declared tolerance; it is not a zodiacal longitude aspect or a map-line crossing.
- Pearl Sequence
- A Gene Keys sequence exploring contribution and prosperity; it does not predict income or financial success.
- Peregrine
- A planet with none of the five essential dignities at its position: domicile, exaltation, triplicity, term or face, under the selected tables and day/night rules.
- Perfection
- Exact completion of an aspect; in horary judgement, also the inferred fulfilment of the matter through specified testimonies.
- Persian / Arabic / medieval Latin / Renaissance
- Persian, Arabic-language, medieval Latin and Renaissance astrology form connected but distinct histories.
- Personality activations
- In Human Design, the birth-time planetary gate assignments, conventionally shown in black; this is a system label.
- Phugpa
- A Tibetan calendrical tradition with its own constants and month rules; another lineage can assign a different date.
- Phugpa / Tsurphu / Kālacakra
- Tibetan calendar computation preserves mathematical traditions associated with the Kalachakra literature and later lineages.
- Pisces
- The zodiac sign spanning 330° up to 360° from the selected zodiac’s origin; constellation boundaries differ.
- Places & maps
- Relocation, astrocartography and Local Space use different geometric constructions.
- Placidus houses
- A time-based quadrant house method; some cusps cannot be calculated at high latitudes.
- Planet
- A physical Solar System body in the astronomical classification; astrological lists also include lights and calculated points.
- Planetary fall
- A traditional debility assigned in the sign opposite a planet’s exaltation sign; it is distinct from detriment, which is opposite domicile.
- Planetary moiety
- Half of a planet’s adopted orb.
- Po Jun (Zi Wei)
- A principal Zi Wei chart star associated by Sean Chan with removing established structures so something new can develop.
- Porutham
- The South Indian check of ten considerations for a match: Dhinam, Ganam, Mahendram, Sthree-Dheergham, Yoni, Rasi, Rasyadhipathi, Vasyam, Rajju and Vedhai.
- Prana dasha
- In the Vimshottari system, a period of the fifth level: a sookshma dasha divided among the nine lords in proportion to their years out of 120.
- Prashna
- Question astrology: a chart for a question or consultation, requiring an event time rather than simply a birth time.
- Pratyantardasha
- In the Vimshottari system, a period of the third level: an antardasha divided among the nine lords in proportion to their years out of 120, beginning with the lord of the antardasha itself.
- Precession
- The slow change in Earth’s axis orientation that shifts equinox-based coordinate references relative to distant stars.
- Primary directions
- Traditional timing procedures based on spherical daily-motion geometry, translated into years using a chosen timing key.
- Projector
- A Human Design type with some definition, an undefined Sacral and no motor-to-Throat connection.
- Proleptic calendar
- A calendar’s rules extended backward before their historical adoption, useful for consistent software calculations.
- Provenance
- The recorded origin of a claim or result: source, method, version and relevant choices, allowing readers to trace it.
- Purva Ashadha
- The 20th lunar mansion in the Ashwini-first 27-division sequence.
- Purva Bhadrapada
- The 25th lunar mansion in the Ashwini-first 27-division sequence.
- Purva Phalguni
- The eleventh mansion and earlier Phalguni.
Q
- Qi Men Dun Jia / Da Liu Ren / Tai Yi
- Qi Men Dun Jia, Da Liu Ren and Tai Yi are three distinct Chinese divination systems often grouped as the three cosmic boards.
- Qi Sha (Zi Wei)
- A principal Zi Wei chart star represented by Sean Chan through the general’s image of committed action.
- Quadrant houses
- House methods that divide the four sectors between Ascendant, Midheaven, Descendant and Imum Coeli.
- Quantum Human Design
- Quantum Human Design is Karen Curry Parker’s contemporary reinterpretation of Human Design.
- Querent
- The person asking a horary question, usually represented by the first house and its ruler.
- Quesited
- The person, object or matter asked about; its relevant house helps determine its significator.
- Questions, chosen times & applied topics
- Horary, electional and topic-specific approaches need separate rulebooks despite their shared tools.
- Quincunx
- A modern aspect near 150°; historical uses of “inconjunct” can instead mean signs lacking a recognized classical aspect.
R
- Rahu
- The north lunar node in Indian astrology; a calculated orbital intersection, not a material planet.
- Rahu Kalam
- A weekday-specific eighth of local daylight, traditionally associated with Rahu and consulted when choosing a time to begin an auspicious undertaking.
- Rashi chart
- The primary Indian zodiac chart of planetary sign positions, before a divisional-chart transformation.
- Rave Mandala
- Human Design’s circular arrangement of sixty-four gates around the zodiac, distinct from ordinary zodiac-sign divisions.
- Reception
- A traditional relationship in which a planet occupies another planet's dignity; state who receives whom and whether the method additionally requires an aspect.
- Reduced harmonic order
- The denominator left after the nearest rational angular fraction k/h has been reduced to lowest terms.
- Reflector
- The Human Design type with no defined centers; this is a graph classification, not a clinical trait.
- Regional Asian discovery
- A research hub to separate Burmese, Thai, Balinese and other local practices as specific sources become available.
- Related symbolic practices
- Numerology, tarot correspondences and birthday hexagrams have different histories and require explicitly chosen protocols.
- Relationships
- Compare two charts or construct a combined chart; synastry, composite and Davison methods differ.
- Relocated chart
- A natal chart recalculated for another location while preserving the same birth instant; the local angles and houses change.
- Ren stem
- Ren (壬) is the ninth Heavenly Stem, classified as Yang Water.
- Repeated lunar date
- A lunar date label assigned to two successive civil days.
- Repeated transit pass
- Another exact encounter with the same natal target and aspect branch after a body's apparent motion brings it back across that longitude.
- Retrograde
- Apparent backward movement in a selected, usually geocentric, coordinate frame; it does not mean that a planet physically reverses its orbit.
- Return chart
- A chart for the instant a selected body reaches its natal longitude again, under a declared coordinate convention.
- Return location
- The geographic place used to calculate a return chart's local angles and houses.
- Right ascension
- An eastward angle around the celestial equator.
- Rob Wealth
- The Ten Gods relation for a stem of the same phase as the Day Master and opposite polarity.
- Root center
- Human Design’s symbolic pressure and drive center, classified as a motor; chart labels do not diagnose stress.
S
- Sacral center
- Human Design’s symbolic response and sustaining-energy center; its definition is central to Generator classification.
- Sade Sati
- In popular Jyotish, the time Saturn spends in the sign before the natal Moon's sign, in it and in the one after, about seven and a half years in all (Saturn takes about two and a half years to cross a sign).
- Sagittarius
- The zodiac sign spanning 240° up to 270° from the selected zodiac’s origin; constellation boundaries differ.
- Saptamsa
- The D7 Jyotish chart, derived from 7 portions of each zodiac sign under a declared rule.
- Saptavimsamsa
- The D27 Jyotish chart, derived from 27 portions of each zodiac sign under a declared rule.
- Sarvashtakavarga
- The aggregate Ashtakavarga: for each sign, the sum of the points of the seven planets' Bhinnashtakavargas there.
- Schools & regional lineages
- Browse the broad Parashari family, Jaimini, KP, Tajika and regional discovery entries without asserting a single line of descent.
- Scorpio
- The zodiac sign spanning 210° up to 240° from the selected zodiac’s origin; constellation boundaries differ.
- Seasonal meetings
- In BaZi teaching, four conventional three-branch directional-seasonal groups: Yin–Mao–Chen (Wood/spring), Si–Wu–Wei (Fire/summer), Shen–You–Xu (Metal/autumn), and Hai–Zi–Chou (Water/winter); the tool reports full membership when all three distinct member branches occur.
- Secondary progressions
- A Western astrological timing method that symbolically maps one day after birth to one year of life; it is not a chart of the current sky.
- Secondary progressions / solar arcs / primary directions
- Secondary progressions, solar arcs and primary directions are different timing constructions.
- Sect
- A traditional distinction between day and night charts and the planetary groups associated with each.
- Separating aspect
- An aspect currently moving away from exactness, judged from the bodies’ relative motion.
- Seven Killings
- The Ten Gods relation for a stem that controls the Day Master and shares its polarity; it is also called Partial Officer.
- Sexagenary cycle
- A sixty-step cycle formed by pairing the ten Heavenly Stems with the twelve Earthly Branches in order.
- Sextile
- An aspect near 60° separation in zodiac longitude.
- Shadow
- In Gene Keys, a challenging pattern offered for contemplation; it is not a diagnosis or a moral verdict.
- Shashtyamsa
- The D60 Jyotish chart, derived from 60 portions of each zodiac sign under a declared rule.
- Shatabhisha
- The 24th lunar mansion in the Ashwini-first 27-division sequence.
- Shen branch
- Shen (申) is the ninth Earthly Branch, paired with Monkey and assigned 15:00–17:00 in the hour table.
- Shichen
- Shichen (時辰) is a traditional two-hour time unit; HKO assigns 23:00–01:00 to Zi and continues in twelve intervals.
- Shodasamsa
- The D16 Jyotish chart, derived from 16 portions of each zodiac sign under a declared rule.
- Si branch
- Si (巳) is the sixth Earthly Branch, paired with Snake and assigned 09:00–11:00 in the hour table.
- Siddhi
- Gene Keys’ term for a transcendent expression of a theme, presented as spiritual teaching rather than a measurable achievement.
- Sidereal time
- A measure of Earth’s rotation relative to the celestial reference direction rather than the mean Sun.
- Sidereal zodiac
- Twelve equal 30° signs aligned through a chosen stellar reference; these are not the unequal IAU constellations.
- Significator
- A planet assigned to represent a person or matter in an astrological judgement; the assignment depends on context and method.
- Sirius
- The IAU-recognised proper name for Alpha Canis Majoris A, the bright star in Canis Major used here as a selectable astronomical target.
- Six clashes
- In BaZi, six fixed opposing pairs of Earthly Branches: Zi–Wu, Chou–Wei, Yin–Shen, Mao–You, Chen–Xu and Si–Hai.
- Six combinations
- In BaZi, six fixed pairs of Earthly Branches conventionally recognized as combinations: Zi–Chou, Yin–Hai, Mao–Xu, Chen–You, Si–Shen and Wu–Wei.
- Sky, bodies & coordinates
- Physical objects, celestial reference frames and the distinction between observation and interpretation.
- Solar arc direction
- A symbolic method shifting chart positions by a solar arc; the arc’s definition and year convention must be stated.
- Solar Plexus center
- Human Design’s symbolic emotional center, treated as both a motor and an awareness center.
- Solar return
- A chart for the instant the Sun reaches its natal ecliptic longitude again in the selected zodiac, conventionally read for the cycle to its next return.
- Solar term
- One of 24 seasonal markers at successive 15° steps of the Sun’s tropical longitude.
- Sookshma dasha
- In the Vimshottari system, a period of the fourth level: a pratyantardasha divided among the nine lords in proportion to their years out of 120.
- Sources & ways of knowing
- Distinguish observations, formulas, historical texts, living practices and attributed teachings; inspect what each source establishes.
- South Asian traditions
- Jyotish-related traditions, regional lineages and techniques.
- Sphere
- A named focus within a Gene Keys profile, assigned to a particular planetary placement; it is not a physical energy sphere.
- Spherical geographic midpoint
- The halfway point on the shorter great-circle arc between two places on a spherical Earth model.
- Splenic center
- Human Design’s symbolic instinct and present-moment awareness center; it is not a test of immune function.
- Square
- An aspect near 90° separation in zodiac longitude.
- Starseed
- A modern spiritual idea of origins beyond Earth; a computed star contact cannot verify alien ancestry or a past life.
- Starseed / soul-origin / Arcturian-Pleiadian overlays
- This registry label groups contemporary spiritual soul-origin interpretations rather than a single documented school with a standard founder or algorithm.
- Stationary
- A moment when apparent longitudinal motion passes through zero near a change between direct and retrograde motion.
- Stationary direct
- The turning instant when apparent longitude changes from decreasing to increasing in the selected reference frame.
- Stationary retrograde
- The turning instant when apparent longitude changes from increasing to decreasing in the selected reference frame.
- Strategy
- A type-specific practice recommended within Human Design, such as responding or waiting for invitations; it is optional reflective guidance.
- Sun
- The star at the Solar System’s center.
- Supergalactic Center
- A term used by some astrologers for an M87-centered reference; it is not a uniquely defined center of the entire universe.
- Swati
- The fifteenth mansion.
- Swiss Ephemeris
- The astronomical calculation library used here; agreement with it checks numerical calculations, not astrological meanings.
- Synastry
- Comparison of two natal charts, especially cross-chart angular relationships; it does not establish another person’s feelings.
- Synastry / midpoint composite / Davison
- Three relationship-chart methods: compare two natal charts, combine corresponding angular midpoints, or calculate an intermediate time-and-place chart.
T
- Tai Yang (Zi Wei)
- A principal Zi Wei chart star associated by Sean Chan with public identity and social visibility.
- Tai Yin (Zi Wei)
- A principal Zi Wei chart star associated by Sean Chan with private experience and family attachment.
- Tajika
- An Indian annual-chart tradition using solar returns together with distinctive aspect and timing rules.
- Tajika / Varshaphala
- Tajika is a Sanskrit adaptation of Perso-Arabic astrology, particularly associated with anniversary horoscopes.
- Tan Lang (Zi Wei)
- A principal Zi Wei chart star associated by Sean Chan with appetite for experience and pursuit of interests.
- Taurus
- The zodiac sign spanning 30° up to 60° from the selected zodiac’s origin; constellation boundaries differ.
- Ten Gods
- In BaZi, ten named relationships assigned by comparing another stem with the Day Master through Five-Phase direction and yin–yang polarity.
- Terrestrial Time
- A uniform time scale used in astronomical models; it differs from rotation-based UT1.
- Three harmonies
- In BaZi, four conventional three-branch groups: Shen–Zi–Chen, Hai–Mao–Wei, Yin–Wu–Xu and Si–You–Chou; the tool reports full membership when all three distinct member branches occur.
- Throat center
- Human Design’s symbolic expression and manifestation center; connections to motors help determine type.
- Tian Fu (Zi Wei)
- A principal Zi Wei chart star associated with stability and retained resources in Wudang.org’s account.
- Tian Ji (Zi Wei)
- A principal Zi Wei chart star associated with strategic thinking and mental activity in Wudang.org’s account.
- Tian Liang (Zi Wei)
- A principal Zi Wei chart star associated by Sean Chan with protective responsibility and the figure of an elder.
- Tian Tong (Zi Wei)
- A principal Zi Wei chart star associated by Sean Chan with ease, enjoyment and companionship.
- Tian Xiang (Zi Wei)
- A principal Zi Wei chart star associated by Sean Chan with mediation, assistance and procedural fairness.
- Tibetan & regional traditions
- A browsing area for Tibetan-derived calendars and separately documented regional Asian practices.
- Tibetan & related calendars
- Compare named calendar lineages and regional variants; similar names can conceal different conversions.
- Tibetan lunar day
- One of thirty divisions of a lunar month in Tibetan calendrical calculation.
- Time zone
- A named set of local clock rules, including historical changes; Europe/Berlin is more informative than a fixed UTC offset.
- Time, location & calendars
- How an instant and location are recorded, converted and assigned to a named calendrical convention.
- Timing methods
- Real sky changes, symbolic directions and period-ruler schedules are different ways of organizing time.
- Tithi
- A lunar phase division: each additional 12° of Moon–Sun longitude difference starts the next of 30 tithis.
- Tone
- One of six subdivisions within a Human Design color; it is not a measured sound frequency.
- Topocentric
- Measured from a specified place on Earth, including the observer’s location-dependent shift in direction.
- Transits / solar and lunar returns
- Transits compare a later sky with an earlier chart.
- Translation of light
- A faster planet separates from one significator and applies to another, creating a connection whose interpretation depends on the selected traditional conditions.
- Trimsamsa
- The D30 Jyotish chart; the selected Parashari method assigns five unequal portions per sign.
- Trine
- An aspect near 120° separation in zodiac longitude.
- Triplicity
- A grouping of three zodiac signs associated with fire, earth, air or water; rulership tables vary by tradition.
- Tropical natal / modern Western
- Tropical natal astrology belongs to a long textual tradition that was repeatedly revised.
- Tropical zodiac
- Twelve equal 30° signs beginning at the March equinox, tied to the seasonal reference rather than constellation boundaries.
- True node
- A node calculated from the Moon’s instantaneous orbital geometry; it can briefly move direct despite the mean node’s retrograde motion.
- Tsurphu
- A Tibetan calendar tradition with calculations differing from Phugpa; it is not simply another timezone setting.
- Tzolk’in
- A 260-day Maya count combining thirteen numbers with twenty day names; names and living practices vary by language and community.
U
- Undefined center
- A BodyGraph center without a complete activated channel; it may still contain one or more activated gates.
- Under the beams
- A traditional label for a planet within a stated vicinity of the Sun.
- Uranian / Hamburg School
- The Hamburg School grew around Alfred Witte's methods, with Friedrich Sieggrün and Ludwig Rudolph involved in its organization and publishing.
- Uranus
- The seventh planet from the Sun, an ice giant; distinguish it from hypothetical “Uranian” points.
- UT1
- An astronomical time scale following Earth’s actual rotation, used for orientation and house calculations.
- UTC
- The civil time standard used to identify a shared instant independently of local time zones.
- UTC offset
- The amount added to UTC to obtain local civil time at a particular instant.
- Uttara Ashadha
- The 21st lunar mansion in the Ashwini-first 27-division sequence.
- Uttara Bhadrapada
- The 26th lunar mansion in the Ashwini-first 27-division sequence.
- Uttara Phalguni
- The twelfth mansion and later Phalguni.
V
- Vara
- The weekday factor in a panchanga; traditional daily reckoning commonly begins at local sunrise.
- Varga
- An Indian chart division and remapping; different vargas require distinct rules, not simply generic longitude multiplication.
- Vargottama
- A planet or Lagna occupies the same zodiac sign in the D1 rashi chart and D9 navamsha chart.
- Venus Sequence
- A Gene Keys contemplative sequence concerned with relationships and emotional patterns; labels do not establish a person’s trauma history.
- Vertex
- A western intersection of the ecliptic and prime vertical, a local reference circle; it is a calculated point, not a body.
- Vimsamsa
- The D20 Jyotish chart, derived from 20 portions of each zodiac sign under a declared rule.
- Vimshottari dasha
- A 120-year planetary period scheme commonly initialized from the natal Moon’s nakshatra and its remaining portion.
- Virgo
- The zodiac sign spanning 150° up to 180° from the selected zodiac’s origin; constellation boundaries differ.
- Vishakha
- The sixteenth mansion, with a name associated with branching.
W
- Water phase
- In BaZi’s Five Phases, Water corresponds to Ren (壬, Yang Water) and Gui (癸, Yin Water).
- Wei branch
- Wei (未) is the eighth Earthly Branch, paired with Goat and assigned 13:00–15:00 in the hour table.
- Western sidereal
- Western sidereal astrology is a modern Western tradition associated with zodiac calibrations such as Fagan–Bradley.
- Whole-sign houses
- The Ascendant’s entire zodiac sign is house one; each following sign becomes the next house.
- Wood phase
- In BaZi’s Five Phases, Wood corresponds to Jia (甲, Yang Wood) and Yi (乙, Yin Wood).
- Wu branch
- Wu (午) is the seventh Earthly Branch, paired with Horse and assigned 11:00–13:00 in the hour table.
- Wu Qu (Zi Wei)
- A principal Zi Wei chart star associated with decisive action and resource matters in Wudang.org’s account.
- Wu stem
- Wu (戊) is the fifth Heavenly Stem, classified as Yang Earth.
X
- Xin stem
- Xin (辛) is the eighth Heavenly Stem, classified as Yin Metal.
- Xu branch
- Xu (戌) is the eleventh Earthly Branch, paired with Dog and assigned 19:00–21:00 in the hour table.
Y
- Yamaganda
- A named daylight eighth whose weekday placement is tabulated in traditional electional astrology.
- Yi stem
- Yi (乙) is the second Heavenly Stem, classified as Yin Wood.
- Yin branch
- Yin (寅) is the third Earthly Branch, paired with Tiger and assigned 03:00–05:00 in the hour table.
- You branch
- You (酉) is the tenth Earthly Branch, paired with Rooster and assigned 17:00–19:00 in the hour table.
Z
- Zi branch
- Zi (子) is the first Earthly Branch, paired with Rat and assigned 23:00–01:00 in the hour table.
- Zi Wei (principal star)
- A principal Zi Wei chart star associated with sovereignty and leadership in Wudang.org’s introductory account.
- Zi Wei Dou Shu
- A Chinese astrological system assigning symbolic stars to twelve palaces; its stars are not all physical celestial objects.
- Zi Wei Dou Shu / Tử Vi
- Zi Wei Dou Shu belongs to the Chinese family of calendrical fate-calculation.
- Zodiac sign
- One of twelve equal 30° sectors in a specified zodiac; not the same thing as an IAU constellation.
- Zodiacal releasing
- In Hellenistic astrology, a way of dividing a life into nested periods that starts from the sign of a lot, usually the Lot of Fortune or the Lot of Spirit.