about the Tensui-reki Jūni Hōi Jutsu:

Tensui-reki Jūni Hōi Jutsu Calculation Formulas: A Comprehensive and Thorough Explanation with FAQs

What is Tensui-reki Jūni Hōi Jutsu?

Tensui-reki Jūni Hōi Jutsu (天水歴十二方位術), or "Tensui Calendar Twelve Directional Art," is a type of calendar system used in ancient China. It's a divinatory art that assigns relationships between celestial movements and earthly affairs to twelve directions to determine fortune and misfortune. It utilizes concepts like the Twelve Earthly Branches (十二支) and the Twenty-Eight Mansions (二十八宿), deriving auspicious days and directions through complex calculations.

Overview of Calculation Formulas

The calculation formulas for Tensui-reki Jūni Hōi Jutsu are highly complex and diverse. Fundamentally, calculations combine the following elements:

 * Date and Time: Year, month, day, and hour.

 * Kan-shi (干支): Combinations of the Ten Heavenly Stems and Twelve Earthly Branches.

 * Twenty-Eight Mansions (二十八宿): 28 constellations based on the moon's apparent path.

 * Directions (方位): East, South, West, North, and the eight intermediate directions.

 * Nine Stars (九星): Nine stars ranging from Ippaku Suisei (One White Water Star) to Kyushi Kasei (Nine Purple Fire Star).

By combining these elements using various formulas and tables, numerical values and directions for determining fortune and misfortune are derived.

Examples of Calculation Formulas

Specific calculation formulas vary significantly depending on the school (流派) and purpose. Here, as an example, we introduce a simplified calculation for finding an auspicious direction (吉方位) in a certain school: