Rectification of a birth horoscope is the process of using the birth chart and astrological timing methods to test and clarify the true birth time of an individual. Since it might well be considered the Mount Everest or Holy Grail of astrological exercises: very challenging, fraught with errors, a low likelihood of success, and a high chance of failure - why then, attempt it? When no birth time is available or if there are multiple conflicting reports, the rectification exercise resembles the challenge of searching half the Indian Ocean for a missing jetliner. But a successful rectification opens up the possibility of a high degree of accuracy in prediction, particularly if it is based upon a timed-tested tradition.
The chart below is of Mary Shelley. The box at top right in the diagram is Gemini, her ascendant, and the signs of the zodiac and 12 houses run clockwise from there. In 1797 when Mary Shelley was born the difference in planetary positions between Western and Vedic Astrology was 21 degrees, so the usual 2 degree Cancer ascendant minus 21 degrees converts to 11 degrees Gemini. This gives the visible astronomical positions for the ascendant and planets at the time of birth and allows many insights not available in Western Astrology.
We often refer to Vedic astrology as if it were a monolith. But just as in Western astrology, there are mutltiple schools of thought. The predominant form of astrology practiced in India and is the most prevalent form by far that is practiced in the United States is PARASARI Astrology.
In IS-300B, students compared the Vedic and Western traditions for Horary and Electional astrology.
Kerri Hartnett wrote the following in response to an assignment from faculty member Gary Gomes regarding the Vedic tradition.
Many of Prasnas’s most revered texts originated from the Kerala region of India. This article explores the social, historical and mythological factors that encouraged the development of horary astrology in this part of India.
The ancient history of Kerala is a bit of a mystery. If we look to mythological evidence, there is legend in India that Parasuram, an incarnation of Lord Vishnu, created Kerala. Legend has it that Parasuram stood on top of a mountain and threw his battle-axe into the sea, commanding it to retreat. The land that emerged from the waters became Kerala.