What is the Placidus house system?

The Placidus house system is one of the most widely used systems in modern Western astrology. It calculates the houses based on the Earth’s rotation, dividing the time it takes for a planet to travel from one degree of the horizon to another. This method results in houses of varying sizes, depending on the individual’s location and the time of birth.

Key features of the Placidus system include:

1. Unequal House Sizes: In Placidus, the houses are not all 30 degrees in size. Depending on the person’s latitude and the time of day, some houses may be larger or smaller than others. This is especially noticeable in regions closer to the poles.
2. Focus on Time: Placidus emphasizes the time it takes for celestial bodies to move across different sections of the sky, which is why the houses can vary in size.
3. Popular in Modern Astrology: Placidus is one of the most commonly used systems in Western astrology today, especially in psychological astrology, because it reflects the unique circumstances of a person’s birth more dynamically than equal house systems.

Astrologers using the Placidus system value its ability to capture the complexity of the time and place of birth, though it can produce highly unequal house sizes, especially in extreme latitudes.

How to select ‘Placidus’ in Generate Chart?

To use this house system in Generate Chart, click on ‘More Actions’ in the Astro Chart and select it from the drop-down menu ‘House System’.