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Natal Chart (Tropical) · Sign 7 of 12

Libra, the balance of the September equinox

Libra is the seventh sign, cardinal air, beginning at the September equinox, when day and night are equal again. Venus rules it, Saturn is exalted in it and the Sun has its fall here; the tradition reads a planet in Libra as seeking balance and the other side.

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A ring of the twelve signs of the zodiac, starting with Aries at the left, with the sector of Libra filled; the glyph of Libra large in the centre, with its name, its span from 180° to 210°, air and cardinal. ♈︎ ♉︎ ♊︎ ♋︎ ♌︎ ♍︎ ♎︎ ♏︎ ♐︎ ♑︎ ♒︎ ♓︎ ♎︎ Libra 180°–210° · Air · Cardinal
Libra as one twelfth of the tropical zodiac, 180° to 210° from the March equinox; our drawing.

Facts

Position
180° to 210° of the tropical zodiac, sign 7 of 12
Element and modality
Air, cardinal (Ptolemy: equinoctial)
Polarity
Masculine, diurnal (positive)
Ruler
Venus
Exalted here
Saturn
Detriment and fall here
Mars in detriment; Sun in fall
Opposite sign
Aries
Season
Begins at the September equinox (northern autumn, southern spring)
The Sun in the sign
About 22 September or 23 September to 21 October or 22 October; it varies by year and time zone, and the chart decides
Sun's entry in 2026
23 September 2026, 00:05 UTC
Glyph
♎︎ (U+264E)
In the Jyotisha chart
Tula, counted from the stars, about 24° behind

Meaning

Libra opens the second half of the zodiac at the autumn equinox, Ptolemy's second equinoctial sign, when day and night are again of equal length, a balance the tradition ties to the scales. Venus rules it, and Ptolemy places Saturn's exaltation here so that it stands opposite the Sun's in Aries, the Sun having its fall in Libra in turn. Valens counts it in the airy triangle with Gemini and Aquarius.

Astrologers read Libra as balance, fairness, partnership and grace: the sign that sees the other side and wants the two sides reconciled. The shadow they name is indecision and keeping the peace at any price. Our keywords: "harmonious, fair, gracious".

In a chart

A body in Libra answers to Venus. Mars is in its detriment here, opposite its own Aries. The Sun in Libra is in its fall, a classical label that astrologers today soften into a question of how the self is found through others, not a verdict. With Libra rising, Venus is the chart ruler.

The Sun is in Libra from about 22 or 23 September to about 22 October; in 2026 it entered on 23 September at 00:05 UTC, the moment of the equinox.

The sign and the sky

Libra's start is the second of the two points where the Sun's path crosses the celestial equator, so it is fixed by the seasons, not by the stars. The scales were once the claws of the Scorpion in Greek star lore; as a constellation they now lie mostly in tropical Scorpio. The Jyotisha chart's Tula is counted from the stars, about 24° behind.

Rising

When Libra is the rising sign, our chart's own reading opens: "Libra rising approaches life with charm, courtesy and an instinct for balance and beauty." Those are EsoTerrier's words, written in 2026 as a reading aid. The chart then names Venus as ruler; a Saturn or a Sun in the rising sign carries the tag of its exaltation or its fall in the chart's table.

Correspondences

Each item with how it stands: “sourced” is in the work cited, “our construction” is EsoTerrier’s own, and “disputed” means the sources disagree.

Element (Valens)
Air: the airy triangle with Gemini and Aquarius sourced
Modality (Ptolemy)
Equinoctial; our cardinal sourced
Polarity (Ptolemy)
masculine, diurnal (positive) sourced
Ruler (Ptolemy)
Venus sourced
Triplicity lords (Ptolemy, in Ashmand)
Saturn by day, Mercury by night sourced
Exaltation (Ptolemy)
Saturn; the exact degree is a later layer sourced
Detriment (medieval)
Mars, in the sign opposite its own house sourced
Golden Dawn trump (*Book T*)
Justice sourced
Natural house (modern teaching)
House 7, in the sign, house and planet scheme Alan Leo taught sourced
Our keywords
"harmonious, fair, gracious" our construction

How the schools read it

Ptolemy (2nd century CE)
An equinoctial sign, the house of Venus; the exaltation of Saturn.
Valens (2nd century CE)
In the airy triangle with Gemini and Aquarius.
The Golden Dawn (*Book T*)
Attributed to Justice.
Modern Western (Alan Leo and after)
Read for character rather than events, with Venus as ruler.
Jyotisha
Tula, the sidereal sign of the same name, counted from the stars about 24° back.
EsoTerrier
Keywords "harmonious, fair, gracious", our own words, and a reading for each planet in Libra.

Claims about it

  • Each Sun sign has fixed calendar dates, such as 21 March to 19 April for Aries.

    false

    What the record shows: The Sun enters each sign at a different moment each year, and the date also depends on the time zone; in 2024 to 2028 Aries began on 20 March at times from 02:17 to 20:24 UTC. The chart decides.

  • The twelve signs are the twelve constellations, each 30° wide.

    false

    What the record shows: The signs are equal divisions of the ecliptic; the constellations are star figures of different sizes, and by the boundaries astronomers drew in 1930 the Sun crosses thirteen of them. The names were shared from the start, the shapes never.

  • Tropical astrology is wrong because its signs no longer match the constellations.

    false

    What the record shows: The tropical zodiac is defined from the March equinox and keeps each sign with its season by definition. The two zodiacs measure the same positions from different starting points; whether either means anything is a separate question.

Elsewhere on EsoTerrier

Sources

Primary texts (4)
  1. Claudius Ptolemy; tr. J. M. Ashmand, Ptolemy's Tetrabiblos, or Quadripartite: being four books of the influence of the stars, translated by J. M. Ashmand (from the paraphrase of Proclus). Davis and Dickson, London, 1822. Public domain; quoted briefly. archive.org/details/b29293066
  2. Vettius Valens; tr. Mark T. Riley, Vettius Valens, Anthologies, translated by Mark T. Riley (preliminary translation, released 2010). Skyscript (hosting the author's PDF), 2010. The translator's copyright; facts and chapter references only. skyscript.co.uk/valens_riley.html
  3. Alan Leo (William Frederick Allan), Astrology for All, to which is added a complete system of predictive astrology for advanced students. Modern Astrology Office, London, 1899. Public domain; quoted briefly. archive.org/details/bub_gb_8CwSAAAAYAAJ
  4. Hermetic Order of the Golden Dawn (S. L. MacGregor Mathers), Book T: The Tarot (the Golden Dawn tarot paper). privately circulated; archive.org item mathers-and-felkin-golden-dawn-book-t-the-tarot-1888, late 1880s or early 1890s. Public domain. archive.org/details/mathers-and-felkin-golden-dawn-book-t-the-tarot-1888
Studies and other sources (3)
  1. Wikipedia contributors, Wikipedia: Zodiac. 2026. CC BY-SA; consulted for facts. en.wikipedia.org/wiki/Zodiac
  2. Wikipedia contributors, Wikipedia: House (astrology). 2026. CC BY-SA; consulted for facts. en.wikipedia.org/wiki/House_(astrology)
  3. Wikipedia contributors, Wikipedia: Domicile (astrology); Exaltation (astrology); Essential dignity; Astrological sign. Wikimedia Foundation, 2026. CC BY-SA; consulted for facts. en.wikipedia.org/wiki/Exaltation_(astrology)
Our own research (5)
  1. EsoTerrier, Natal and sidereal wheels: research for the rebuild (README, report-main.md, notes/). Research folder 2026-10-11-natal-sidereal, 2026.
  2. EsoTerrier, EsoTerrier chart engine: services/chart/ephemeris.py, calculation.py, jyotish.py, texts.py. python/esoterrier, services/chart, 2026.
  3. EsoTerrier, Sun ingress dates 2024 to 2028 computed with Skyfield and JPL DE440s (notes/ingress-dates.json). Computed with Skyfield and JPL DE440s, 2026.
  4. EsoTerrier, EsoTerrier app: resources/js/support/natal.ts and components/Chart/NatalChartTropical.vue. The chart component in our app, 2026.
  5. EsoTerrier, Knowledge layer shared topics: _shared/zodiac and _shared/planets (accuracy pass, 2026-10-13). Knowledge layer, shared topics, 2026.

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By EsoTerrier. Written with AI assistance from our research and checked against its sources; last revised 20 October 2026. How we write these pages.

First published ; last revised . Corrections: support@esoterrier.com.