Astrology is as old as human civilization; the earliest records date back to 3,500 BCE. The Sidereal Zodiac and the Whole House system are the oldest recorded astrological system known to mankind.
The ancient Sumerians were the first to document the movements of the planets against the the backdrop of the constellations; a process which was later adopted by the Egyptians, whose Zodiac glyphs are still recognizable to us today. But it was their predecessors who first divided the sky into 12 equal sections, or Houses. These ancient methods remained prevalent throughout ancient Mesopotamia and Egypt, for thousands of years.
Greek Influence On Astrology
It wasn’t until the rise of Alexander the Great, around 350 BCE, that Sumerian astrology began to take on the characteristics of Greek mythology and philosophy. Over the next 400 years, Sidereal Astrology remained relatively intact. It was in this form that astrology spread to India. To this day, Indian astrology continue to use the Sidereal Zodiac and Whole House system for all of their computations and predictions.
Unfortunately, around 150 CE, the Greek astrologer and writer Claudius Ptolemy, suggested that the zodiac should begin on the Vernal Equinox instead of the beginning of the constellation Aries; a zodiac system that we now refer to as “Tropical.”
The problem with this is this system is that the tropical year is 20 minutes shorter than the sidereal year. Thus, every 72 years, the vernal point moves backward through the sky by one degree. Over the last 2,000 years, the Vernal Point has deviated a full 24 degrees, rendering all calculations based on this Zodiac, inaccurate.
The Tropical Zodiac Has Been Devolving Over Time
As the centuries progressed, the Tropical Zodiac continued to deviate from its Sidereal origins. Naturally, Western Astrologers were forced to invent new House Systems to explain the mounting anomalies and incorrect predictions caused by the Tropical Zodiac.
Centuries of failed astrological predictions eventually led to this once divine science, being written off as pseudoscience in the West.