Intercepted Sign

Definition

An intercepted sign is a zodiac sign whose full 30° arc falls entirely inside one house, so the sign never touches the house cusp before it or the one after it. This happens only in quadrant house systems — Placidus, Koch, Regiomontanus, Campanus — and mainly at higher latitudes, where houses come out unequal in size and two neighbouring cusps end up more than 30° apart. Interceptions always come in pairs, on opposite sides of the chart: the same intercepted axis shows up on the matching pair of houses.

In Tradition

Modern Western astrologers read an interception as a product of the geometry of your birth time and place, not an interpretive accident. The intercepted sign, and any planets in it, are tucked "inside" a house whose cusp belongs to a different sign — so what that sign and its ruler signify works in a kind of background relationship to the cusp sign's ruler. Astrologers who use whole-sign or equal houses never meet interceptions, since in those systems every sign gets exactly one house.

In Practice

To spot an interception, astrologers scan the run of house cusps: when the same sign sits on two cusps in a row, the next sign in zodiacal order is intercepted inside the house between them. In practice the cusp ruler is usually given the main say over the house's topics, while the intercepted sign and any planets in it are read as a second layer with their own ruler — so the house effectively has two co-rulers, with the cusp ruler taking the lead. Modern psychological readings often describe the intercepted material as harder to reach at first, something a person grows into with conscious effort.

Historical Origin

Interceptions are a known feature of every quadrant house system and appear in medieval and Renaissance treatises that work out high-latitude charts. Modern Western treatments include March and McEvers' The Only Way to Learn Astrology and Hand's Horoscope Symbols. Whole-sign-revival authors — Brennan, Hand, Holden — point out that the phenomenon never appears in whole-sign houses, which makes it a feature of the chosen house system rather than something built into the chart itself.

Further Reading

• Marion D. March and Joan McEvers, The Only Way to Learn Astrology
• Robert Hand, Horoscope Symbols
• Deborah Houlding, The Houses: Temples of the Sky