What Sign Is on Each of Your Houses?

A house cusp is the line where a house begins, and the zodiac sign sitting on that line colors the whole house. The first house cusp is the most familiar one: the sign there is your rising sign, or Ascendant. Every other house cusp follows from it, rotating through the zodiac in order, so the sign on your second cusp, third cusp, and so on, all depend on where the first one falls.

The sign on a cusp does two things. It sets the tone of that life area, the way Aries on the seventh cusp leans toward direct, high-spark partnerships while Libra there leans toward balance and diplomacy. It also hands the house a ruler: the planet that rules the cusp sign becomes the lord of that house, and where that planet sits describes how the topic is routed through the rest of the chart. The lord of the houses calculator reads that ruler layer in full.

Three layers stack in any placement. The planet is what is acting, the sign is how it acts, and the house is where it plays out. Mars in Aries describes a fast, blunt kind of drive; put that Mars in the sixth house and the drive goes into work and health, while in the seventh it aims at partners and rivals. The sign is the style, the house is the stage.

That is why this calculator shows both the sign on each cusp and the planets sitting inside each house. To read a single placement in depth, the planet in house guide takes each planet through all twelve houses, and the per-house guides in the twelve houses library cover what each area means sign by sign.

Enter your birth date, time, and place. The same astronomy engine behind every Augurine chart finds your Ascendant for that exact moment, divides the chart into twelve houses, and reports the sign on each cusp, the planet that rules it, and the bodies that fall inside.

The result uses whole-sign houses by default, where each house is one full zodiac sign measured from your rising sign. Quadrant systems like Placidus can put a different sign on some cusps, especially the tenth, and can leave a sign intercepted inside a house rather than on a cusp. To see those differences side by side, the house system comparison calculator puts whole-sign and Placidus together, and the whole sign chart renders the whole-sign layout in full.

The houses rotate off the Ascendant, which moves a full degree about every four minutes, so a birth time off by an hour can change the sign on a cusp and move a planet from one house into the next. This is the part of the chart most sensitive to the clock. Your planets keep their signs even without a time, but the houses become approximate.

If your time is uncertain, treat any planet sitting close to a cusp as provisional, and read the houses as a working sketch rather than a fixed map. A recorded birth time, from a certificate or hospital record, gives the dependable version. For a near-miss time worth pinning down, birth-time rectification narrows it using known life events.