# Category "Primary Direction Calculation" Page 1/1

BlogAdvanced AstrologyMathematics of the Celestial Sphere ❘ Primary Direction Calculation Primary Direction in Placidus System

A complete guide for astrologers: calculating a primary direction in the Placidus house system with mathematical formulas. Primary Direction in Regiomontanus System

A complete guide for astrologers on how to calculate a primary direction in the Regiomontanus house system with math formulas. Mundane Antiscia Equation

Antiscia is a point symmetrical to the planet's degree. But if the planet deviates from the ecliptic, it has two antisсia. Let's illustrate it. A Circle of Mundane Aspects

The main question in primary directions is which plane to use for aspects. It is not the equator or the ecliptic. Let's explore the right approach. Mundane Position in the Regiomontanus System

Planets conjunct each other spatially when their mundane positions coincide. What is it, and how can it be calculated? Learn more from this article. Mundane Position in the Placidus System

What does the spatial connection of two planets look like in the Placidus house system? Get acquainted with the equations of mundane positions.