Equation of Time · Astrological definition of Equation of Time · Astrology Encyclopedia  ·  October 21, 2020, 6:45 GMT

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# Equation of Time

## Equation of Time - Astrology Encyclopedia

Definition of Equation of Time (1) Astron. The difference between mean solar time and apparent solar time. The moment the Sun is exactly on the Midheaven of any place is apparent noon at that place; hence an apparent solar day is the interval between two consecutive passages of the Sun across the Midheaven, or the elapsed time from one apparent noon to the next. However, since the Sun - or more correctly speaking, the Earth - does not move at a uniform speed throughout its orbit, the length of the apparent day varies at different times of the year. To make possible the use of time-keeping mechanisms, there was adopted a standard fixed day of 24 hours, known as a mean day - the length of which is the average of all the apparent days of the year. The result is that mean noon is sometimes earlier and sometimes later than apparent noon. The difference between mean and apparent noon on any particular day, the Equation of Time, may amount to as much as sixteen minutes. (2) Astrol. It is generally considered that in a Figure erected for noon the Sun will be at the cusp of the Tenth House. This is approximately true, although at certain times of the year it will be two or three degrees removed, on one side or the other from the Midheaven. One sometimes hears the suggestion that the Figure should be erected by the Sun and not by the clock, which would involve the application of the Equation of Time as a correction of clock time. This is done when calculating the time of the rising of the Sun or other bodies. Its application to the erecting of the Figure, however, would be utterly unsound, for the time in which the birth is stated and the ephemerides which give the planets' places are both based on mean time. If the Figure were to be erected for apparent time, the birth moment would have to be corrected to apparent time, and the result would be the same. (3) It is unfortunate that this term is incorrectly applied by some authorities to the difference between mean and sidereal time, more properly termed the correction employed in reducing to sidereal time the elapsed mean time of a given birth moment before or after noon or midnight. (4) The term has frequently been incorrectly applied to the time equivalent of an Arc of Direction, in years, months and days - of which few points in Astrology have been more debated. The coordination of the 360° of the Equational circle and the 365¼-day year yields a mean value of 3m 56.33s per day, and a mean increment of either Right Ascension or Longitude of 59'8". Some authorities advocate an equation of 1° per year or 5' per month. Others advocate a method wherein the Arc of Direction is added to the R.A. of the Sun at birth - the number of days after birth at which the Sun attains this directional position, reduced to years at the rate of one day for a year or 2 hrs. for a month. Others divide the Arc of Direction by the Sun's mean motion per year (59'8"), the result converted into time at the rate of one degree for a year. (v. Directions.)

(Nicholas deVore - Encyclopedia of Astrology)

The other dictionary entries:

A

Accidental Ascendant · Accidental Dignity · Acronycal · Acronycal place · Active Influence · Adept · Adjusted Calculation Date · Line of Advantage · Affinity · Afflicted · Astrological Ages · Air Signs · Albedo · Almanac · Almuten · Altitude · Ambient · Anahibazon · Anareta, anaretic · Anaretic Point. Anaretic Place · Androgyne, androgynous · Angels · Angle · Angstrom · Angular · Angular Velocity · Anomaly · Anipathies · Antipathy · Antiscion · Antisedentia · Aphelion · Apheta · Aphorism · Apogee · Apparent Motion · Application · Appulse · Apsis · Aquarius · Arabian Points, or Parts · Arc · Arc of Vision · Ares · Aries · Armillary Sphere · Ascendant · Ascending · Ascension · Ascension, Signs of Long · Ascension, Signs of Short · Ascensional Difference · Aspect · Aspectarian · Asterism · Asteroids · Astral Body · Astral Light · Astral projection · Astrolabe · Astrology · Astromancy · Astrometeorology · Astronomical unit · Astronomos · Astronomy · Astrotheology · Aten · Athazer · Aura · Aurora Borealis, Northern Lights · Inclination of Axis · Axial rotation · Azimene · Azimuth

B

Baal · Tower of Babel · Babylon · Babylonian · Barren Signs · Beholding Signs · Bel · Belts of Jupiter · Benefic Aspects · Besieged · Bestial signs · Bicorporeal · Bi-Quintile · Birth Moment · Birth Stones · Bitter Signs · Blend · Brahmanaspati · Broken Signs · Brutish signs · Buddha

C

Cabala, Cabalism · Cacodemon · Cadent · Caduceus · Calendar · Cancer · Cappella · Capricorn · Caput Draconis · Cardinal Signs · Casting the Horoscope · Cataclysmic Planet · Catahibazon · Cauda Draconis · Cazimi · Celestial Sphere · Ceres · Chaldaeans · Chaldaean Oracle · Changeable Signs · Character · Character of Planets · Characteristics of the Signs · Chart · Chronocrators · Chronos · Circle · Circles of Position · Cities, Sign Rulership · Clairaudience · Clairsentience · Climacterical Conjunction · Climacterical Periods · Climate · Cold planets · Cold Signs · Collection of light · Colors · Combust · Comets · List of Periodic Comets · Comet 1925a · Collision with Earth · Commanding Signs · Common Signs · Conception · Conceptive Signs · Configuration · Conjunction: Conjoined to · Conjunction, Superior and Inferior · Constellations · Contact · Contra antiscions · Converse Directions · Coordinate · Copernican System · Corona · Correction · Co-signficator · Cosmecology: the ecology of the cosmic · Cosmic · Cosmic Conditioning · Cosmic Cross · Cosmic Philosophy, or Cosmism · Cosmic Psychology · Cosmical · Councillor Gods · Countries · Crepuscule · Crescent · Critical Days · Critical Degrees · Crooked Signs · Crucial Degrees · Culminating · Culmination · Culminator · Cusp · Cycle · Cycles · Jupiter Cycle · Pluto Cycles · Neptune Cycle · Uranus Cycle · Saturn Cycles · Cycles - Tabulated data

D

Day · Day House · Day of Week, to determine · Daylight Saving Time · Day Triplicity · Debility · Decade · Decanate, Decan · Decatom · Decile · Declination · Decreasing or Increasing in Light · Decumbiture · Deductive Type · Deferent · Degree · Degree Rising · Individual Degrees · Individual Degree Tables · Aries Individual Degrees · Taurus Individual Degrees · Gemini Individual Degrees · Cancer Individual Degrees · Leo Individual Degrees · Virgo Individual Degrees · Libra Individual Degrees · Scorpio Individual Degrees · Sagittarius Individual Degrees · Capricorn Individual Degrees · Aquarius Individual Degrees · Pisces Individual Degrees · Delineation · Depression · Descendant · Descending · Destiny · Detriment · Dexter · Dhanus · Dichotome, or Dicotome · Dignities, Debilities · Dignities and Debilities · Dionysian Period · Directions. Progressions · Dispositor · Dissociate Signs · Distance · Diurnal · Dog Days · Dog Stars · Domal Dignity · Dominical Letter · Doryphory · Double-bodied or Bicorporeal Signs · Dragon's Head. Dragon's Tail · Dumb Signs · Duration of Life · Dwa-da-shamsa · Dysis

E

Eagle · Earth Shine · Earth Signs · East · Easter · Eccentric · Eclipse · Eclipse of Thales · Ecliptic; Via Solis, the Sun's path · Ego · Elections · Electric planets · Elements · Elevation · Elevation of the Pole · Elevation by Latitude · Eleveation by House Position · Elongation · Embolismic Month · Emerge · Emotional Natures · Enneatical · Epact · Ephemeral Map · Ephemeral Motion · Ephemeris · Epicycle · Epoch · Signs of Equal Power · Equation of Time · Equator · Equinox · Equinoctial Signs · Era · Eros · Erratics · Esoteric · Essential Dignities · Eudemon · Exaltation · Executive Type · Exoteric · Externalize · Extra-sensory Perceptions

F

Face · Fall · False Angle; False Arc · Familiarity · Fate · Feminine Signs · Feral · Figure · Fire Signs · First point · Fixed Signs · Fixed Stars · Flexed · Fortified · Fortitude · Fortuna · Fortunate Signs · Fortunes · Four-footed Signs · Fourth Dimension · Free-Will · Friendly planets · Fruitful Signs · Frustration · Gabriel · Galactic Center · Galactic Latitude · Galaxy · Notes of the Gamut · Gemini · Gems · Genethliacal Astrology · Genethlialogy · Geniture · Geoarc · Geoarc Figure · Geocentric · Astrological Geomancy · Gibbous · Giver of Life · Gnomes · Golden Number · Arc of Gradial Transit · Grand Cross · Grand Trine · Gregorian Calendar · Guarded

H

Hayz · Hearing · Heart of the Sun · Heliacal Rising · Heliacal Setting · Heliarc · Heliarc Figure · Heliocentric · Heliocentric Astrology · Heliocentric Longitude and Latitude · Helios · Hemisphere · Hermaphrodite · Hermes · Hermetic · Herschel · Hexagon · Hindu Astrology · Home, Day or Night · Homodromi · Honors · Horary Astrology · Horary Circles · Horary Time · Horimea · Horizon · Horizontal Aspects · Horizontal Parallel · Horoscope · Hour Angle · Hours · Houses · Meaning of Houses · First House · Second House · Third House · Fourth House · Fifth House · Sixth House · Seventh House · Eighth House · Ninth House · Tenth House · Eleventh House · Twelfth House · Houses, Reciprocal Action of Opposite · Solar Houses · House Ruler · Intercepted House · House: Diurnal, or day; Nocturnal, or Night · Tables of Houses · Human Signs · Hyleg · Hylegiacal Places · Hypogeon

I

Ides · Period of Illumination · Immersion · Impeded; Impedited · Imperfect Signs, Broken Signs · Imum Coeli · Inclination · Inconjunct · Increasing in Light · Increasing in Motion · Individual Houses · Inferior Planets · Infortunes · Ingress · Initiating Signs · Initiative Type · Injunct · Inspirational Natures · Intellectual Natures · Interlunar · Intercepted · Interpolation · Interpretation · Invariable Plane · Inversion · Ishtar · Isis and Osiris · Issat

J

Joined to · Joy · Julian Calendar · Julian Day

K

Kabala · Kakatyche · Karma · Katababazon · Kether · Key-Cycle · Kosmos · Krishna · Kronos

L

Labha bhava · Lagna · Lagna Sphutas · Latitude · Laya Centers · Leap Year · Leo · Life · Light · Collector of Light · Light of time · Light Planets · Light, Velocity of · Light-year · Lights · Lilith · Local Mean Time · Logarithms · Longitude · Lord · Lucifer · Luminaries · Lunar · Lunar Declination · Lunar Mansions · Lunar Month · Lunar semicircle · Lunar Year · Lunation · Embolismic Lunation · Periodical Lunation · Synodical Lunation

M

Magic · Magnetism · Magnitude · Major Planets · Malefic · Mansions of the Moon · Map · Marduk, or Asaru · Mark, Noon or Midnight · Martian · Masculine Degrees · Masculine planets · Masculine Signs · Maternal Signs · Matutine, Matutinal · Maya · Mean Motion · Mean Time · Measure of Time · Medical Astrology · Medium Coeli · Mediumship · Medusa's Head · Meridian · Meridian Distance · Meridional · Mesmerism · Metonic Cycle · Metonic Return · Micron · Midheaven · Midpoint · Milky Way · Minute · Moderators · Modus Rationalis · Moisture · Monad · Month · Month · Motion · Movable Signs · Mundane Aspects · Mundane Astrology · Mundane Directions, or Directions in Mundo · Mundane Parallel, or Parallel in Mundo · Music of the Spheres · Mutable Signs · Mute Signs · Mutilated Degrees · Mutual Application · Mutual Reception

N

Nadir · Naibod's Table of Times · Natal Astrology · Native · Nativity · Natural Day · Nebo · Temple of Nebuchadnezzar · Nebulae · Negative Sign · Neomenium · Neptune · New Year's Day · Night Houses · Ninib · Moon's Nodes · Nodes of the Planets · Nomes · North Point · Northern Signs · Nova

O

Obeying Signs · Oblique Ascendant · Oblique Ascension · Oblique Descension · Oblique Sphere · Occidental or Oriental · Occultation · Occursions · Occursor · Old Style · Opposition · Omniverse · Orbit · Orbital revolution · Oriental · Orbs · Orphic Mysteries · Ortive Difference

P

Pantheism · Pantheon · Parallel · Pars fortunae; Part of Fortune · Partile · Passive · Pavanna · Penumbral Eclipse · Peregrine · Perigee · Perihelion · Periodical Lunation · Phase · Phases · Phenomenon · Philosophy · Philosopher's Stone · Phoenon · Pisces · Classifications of Planets · Planetary Ages of Man · Planetary Anatomy · Planetary Angels · Planetary Colors · Planetary Days · Planetary Flavors · Planetary Forms · Planetary Hours · Planetary Jewels, or Precious Stones · Planetary Metals · Planetary Motions · Planetary Objects and Substances · Planetary Pathology, or physical ailments · Planetary Pattern · Planetary Periods, or Cycles · Planetary Physiology · Planetary Physiques · Planetary Psychology · Planetary Significators · Planetary Significators - Horary · Planetary Significators - Mundane · Planetary Spirits · Planetary Vegetation and Herbs · Planetary Vocations and Avocations · Planetary Years · Platic · Pluto · Point of Life · Point of Love · Polar Elevation · Polarity · Pole - of the Ascendant; of the Horoscope · Ponderous, or Ponderable planets · Posited · Positive sign · Practical Natures · Precession of Equinox and Pole · Precession of the Equinoxes · Predictions, in Mundane Astrology · Predictive Astrology · Prenatal Epoch · Prescience · Primary Directions · Prime Vertical · Primum Mobile · Principal Places · Process · Profections · Prognosis · Progressed Horoscope · Progressions · Progressions vs. Directions · Progressive Solar Revolution · Prohibition · Promittor · Proper Motion · Prophecy · Proportional Arcs · Prorogator · Psychography · Psychometry · Psychophobia · Ptolemaic Astrology · Pyrois

Q

R

Radical · Radical Position · Radix · Radix System · Rahu · Rapt Motion · Rapt Parallel · Under the Rays · Reception · Mutual Reception · Recessional Directions · Rectification · Recurrence Cycles · Refranation · Relative Houses · Retrograde · Retrograde Application · Revolution · Revolutionary Additives · Right Ascension · Right Distance · Right Sphere · Rising Sign · How to Approximate the Rising Time of a Planet · Rotation · Royal Stars · Ruler · Geographical Rulership · Ruminant Signs

S

Sagittarius · Saros · Saturn chasing the Moon · Saturnine · Saturnalia · Satellite · Satellitium · Scorpio · Secondary Progressions · Seer · Semi-Arc · Semi-Quintil · Semicircle · Semi-sextile · Semi-square · Significators of the Senses · Separating, separation · Sesqui-quadrate · Sesquiquintile · Seven · Sexagenary · Sextile · Sextiles · Sidereal Clock · Sidereal Day · Sidereal Time · Sidereal Year · Sign · Signs and the Disciples · The Symbology of Twelve Signs · Sign: Aries · Sign: Taurus · Sign: Gemini · Sign: Cancer · Sign: Leo · Sign: Virgo · Sign: Libra · Sign: Scorpio · Sign: Sagittarius · Sign: Capricorn · Sign: Aquarius · Sign: Pisces · Classifications of Signs · Sympathetic · Significator · Sinister · Slow of Course · Sol · Solar Astrology · Solar Cycle, or Cycle of the Sun · Solar Day · Solar Equilibrium · Solar Revolution · Solar Semicircle · Solar System · Solar System bodies: Sun · Solar System Bodies: Moon · Solar System Bodies: Mercury · Solar System bodies: Venus · Solar System Bodies: Earth · Solar System Bodies: Mars · Solar System Bodies: Asteroids · Solar System Bodies: Jupiter · Solar System bodies: Saturn · Solar System Bodies: Uranus · Solar System bodies: Neptune · Solar System bodies: Pluto · Solar Time · Solar Year · SOL-om-on · Solomon's Seal · Solomon's Temple · Solstices · South Latitudes · Southern Signs · Spectroscope · Speculum · Sphere · Sphinx · Square · Standard Time · Star of Bethlehem · Stars · Stationary · Stations · Stellium · Strength of a planet · Succedent Houses · Sunspot Cycle · Supercycle · Superior Planets · Synodical Lunation · Synthesis · Syzygy

T

Tables of Houses · T-cross · Taurus · Telepathy · Telescope · Temporal Houses · The Terminal Houses · Terms of the planets · Testimony · Tetrabiblios · Tetractys - ten symbolic dots · Tetragon · Thema Coeli · Throne · Time · Time. Correction of Mean to Sidereal Time · Transit · Transit of a planet across the Sun · Transitor · Translation of Light · Transmutation · Trigon · Trigonocrators · Trimorion · Trine · Trinities · Triplicities · Tropical Signs · Tropical Year · True Solar Day · Trutine · Twilight

U

Umbral Eclipse · Under the Sunbeams · Unfortunate Signs · Urania · Uranian · Uranian Astrology · Uranus

V

Vernal Equinox · Vertical · Vespertine · Via Combusta · Vibrations · Violent Signs · Virgo · Visibility · Vital Signs · Vocal Signs · Signs of Voice · Void of Course · Vulcan

W

War Time · Watchers of the Heavens · Water-bearer, Waterman · Water Signs · Wave Length · Weak Signs · Whole Signs

Y

Year

Z

Zodiac · Zodiacal Aspects · Zodiacal Directions · Zodiacal metals · Zodiacal Parallels · "Zodiacus Vitae." The Zodiac of Life. · Zero Hour Circles · Zenith