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Adjusted Calculation Date
Definition
An adjusted calculation date is a technical reference date used in certain systems of directions or progressions. It identifies the point from which planetary culmination, movement, or timing is measured after the required astronomical corrections have been made.
Astrological Meaning
Older predictive methods often adjusted for local time, right ascension, latitude, meridian position, or the relationship between a planet and an angle. The resulting date provided a working reference for translating an arc of movement into a period of life.
Why It Matters
The term appears mainly in technical and historical astrology. Understanding it helps readers follow older calculation procedures and recognize that predictive methods may use corrected timing points rather than simply adding a fixed number of years to the birth date.
Related Encyclopedia Entries
- Primary Directions
- Progressions
- Limiting Date
- Culmination
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