Cool Moon Facts by Whip

Real astronomy and dated history, with sources. Documented traditions and folklore. Modern lunar astrology · symbolic, not predictive.

Houses · Advanced

Quadrant house systems

House systems in which the Ascendant and Midheaven are house cusps and each quadrant is split into three.

Placidus, Koch, Porphyry, Regiomontanus and Campanus are quadrant systems; they differ in how they split each quadrant. Whole Sign and Equal are not.

  • Kind: Calculation
  • Tradition: Shared across Western traditions
  • In this site’s birth chart: used

Related: House system, Placidus houses

Written for Cool Moon Facts in its own words. An astrology source documents what astrologers believe or practise; it does not establish that astrology works.

All terms · Your birth chart

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