AstroDiem

4th House Astrology Calculator

The 4th house is home, family roots, and the private end of the day. Enter your birth details to get the sign on that cusp, the IC, and any planets inside the house.

Birth time and place set the house cusps. Unknown time uses 12:00 noon, which can put this cusp in the wrong sign.

Select a city from the suggestions so the calculation uses the right place and timezone.

Home and private base

The 4th house covers the place you come from and the place you retreat to: parents, household, land, and late-night privacy. The cusp is the IC, opposite the Midheaven. The sign on it describes the tone of home. Planets here bring family themes into focus. The Moon sign often speaks to the same need for shelter; the natal chart shows how the IC sits with the rest.

Why the birth time matters

The 4th house cusp is the IC in Placidus, calculated from birth place and time. Date, clock time, and city are required. A wrong time can move the IC into another sign. If the time is unknown, noon is only a stand-in. The public opposite angle is on the Midheaven calculator.

Frequently asked questions

What is the IC?

The Imum Coeli is the 4th house cusp in most house systems used here. It is the private base of the chart, opposite the Midheaven. This calculator returns that sign and any planets in the 4th house.

Why does this calculator need my birth time?

The IC follows the local meridian and horizon. Without an accurate time, the cusp can land in the wrong sign. Noon is only approximate.

Is the 4th house only about childhood?

Childhood and parents sit here, and so does the home you build later. It is the private foundation under public life in the 10th house.

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