An Age Old Mistake That Still Haunts Astrologers

©  Copyright Terry MacKinnell 2011, 2016 Under the Berne Convention

The ancient Greek astronomer-astrologer Hipparchus in the late 2nd century BC introduced the Vernal Point (VP) as the calibration technique for the astrological ages based on the VPs position among the zodiacal constellations.  The VP is the position of the Sun at the vernal equinox around 21st March each year. Hipparchus commenced the tradition of calibrating the astrological ages based on the location of the VP in one of the 12 zodiacal constellations.  This is a mathematical technique as it is not possible to actually see which constellation the Sun is ever located within as it is always daytime when the Sun is visible.

Sunrise in Baghdad, Iraq 20 March 2016
Sunrise in Baghdad, Iraq 20 March 2016

The above illustration shows the Sun rising at the vernal equinox on the 20th March 2016 in Baghdad, Iraq (in deference to the Sumerian and Mesopotamian astronomer-astrologers who defined the zodiacal constellations thousands of years ago).  The inclusion of the zodiacal constellation boundaries is for reference purposes. The constellation of Aquarius sits well above the horizon and the Sun is located in one arm of the constellation of Pisces.  The constellation boundaries are irrelevant for astrological purposes as they have been defined by modern ‘pagan’ astronomers.  Furthermore there is no evidence the ancients had constellational borders.  The real estate style subdivision of the sky into constellation is a modern phenomenon.  Based on Hipparchus’ system, the above indicates the world is currently in the Age of Pisces.

Note: A video version of this post is now available on YouTube

YouTube Video

The VP has been in the constellation of Pisces for two thousand years or more and remains in the constellation of Pisces.  This is why most astrologers claim we remain in the Age of Pisces.  Most research astrologers accept the zodiacal constellations as symbolic markers only for the 12 sidereal signs of exactly 30 degrees each.  The sidereal zodiac was invented by the ancient Greeks (or Babylonian astrologers) to tidy up the zodiacal constellations in their evolving practice of horoscopic astrology.

 A portrait of Hipparchus of Nicaea from "The School of Athens" by Raphael
A portrait of Hipparchus of Nicaea from “The School of Athens” by Raphael

Unfortunately for astrologers over the following period (equivalent to the length of an age), Hipparchus failed to realize that the old zodiacal constellations had a much older method of calibration. The older method of calibrating the zodiacal constellations is a visual technique. All old astronomical techniques were visual—mathematics took an insignificant role in ancient astronomy. Hipparchus did not use the ages-old visual technique as he was obviously transfixed by the new mathematical techniques developed in his era.

I am much indebted to a paper by Rumen Kolev—Some Reflections about Babylonian Astrology.[1] In this paper, Kolev explains the five basic principles applied to ancient astronomy techniques in Babylon. In summary, three of these principles state the visible light directly received from a stellar object was of primary concern, as the ancients believed “God is Light.” In those days, the view of the heavens by the unaided eye was the only method of determining astronomical phenomena. The other two principles are that the two key times for astronomical observations are around Sunrise and Sunset.

In ancient times, the telescope was preceded by the line of the horizon and Neugebauer states that Babylonian astronomers were mainly concerned about astronomical phenomena on the horizon.[2] For example, a major Babylonian text dated 1400–1000 BCE supplies the heliacal rising dates of thirty-four stars and constellations according to their 360-day annual calendar.[3] In ancient Upper Egypt, the heliacal rising of the star Sirius marked the beginning of the year.[4]

The heliacal rising of a star or planet is its first appearance on the eastern horizon in the early morning sky just before the rays of the Sun obliterate the stars from the night sky. The term “heliacal rising” unfortunately has different interpretations.  The definition of the “true heliacal rising” is when a star or planet, etc., rises with the Sun but because the Sun is visible the planet or star cannot be seen.  This is the ‘mathematical’ system employed by Hipparchus as the position of the Sun in a constellation must be calculated.

The alternative to the “true helical rising” is the “visible heliacal rising” when a star or planet, etc., can be seen on the eastern horizon just before the approaching sunlight obliterates the star or planet from view.[5] My use of the term “heliacal rising” refers exclusively to the visible heliacal rising. In most ancient societies, the visible heliacal rising (or setting) of a stellar object was one of the most important calibration techniques applied to a stellar object.  The “true” heliacal rising technique is a ‘modern’ mathematical technique probably invented by Hipparchus.

The ancient Greek author Hesiod, a contemporary of Homer, mentions the heliacal risings of the star Arcturus and asterism, the Pleiades, as if the reader of his times clearly understood what he was talking about.[6] To many ancient people, the heliacal phenomena of stars and constellations were an integral part of their calendar. In practical terms, the heliacal rising of a body occurs about one hour before Sunrise, but this will vary with latitude, season, and the brightness of the bodies involved. Rumen Kolev also states the heliacal rising (or setting) of a stellar object must occur before the Sun rises (or after it sets)[7] which is another way of saying the “visible heliacal rising”.

Gavin White in his book Babylonian Star-Lore proposes the most relevant astronomical feature of ancient times (presumably other than the position of the Sun and Moon) were the stars on the eastern horizon just before dawn.[8] White goes further and claims that the first star maps were actually a calendar in the sky, with the equinoxes and solstices as the reference grid for the calendar.[9] In the earliest times of civilization, mankind referred to the stars in their heliacal mode with a specific focus upon the two annual equinoxes and solstices. Their New Year, commencing at the spring equinox, elevates this point above the autumn equinox and two solstices.

This ancient view of the cosmos is basically in agreement with my approach to the astrological ages based on precession. The modern approach to calibrating the ages using the Vernal Point developed by Hipparchus is incongruous to the original methods of observing the stars and constellations. This incongruity of using the position of the Sun at the vernal equinox as the calibrator for the astrological ages is put into context by Nicholas Campion, who states that in observational astronomy it makes no sense to place the Sun in a constellation or among stars, because whenever the Sun is visible the stars are not.[10] Observational astronomy was the astronomy of the ancients.

Elementary astronomy provides the reason why my rectification of the ages is half a sign in advance of the accepted norm amongst astrologers until now – it is because the commonly accepted ages based on the VP are half an age late! The VP is located at the Sun’s position on the vernal equinox (around 21 March each year). The heliacal zodiacal constellation is viewed approximately one hour before the Sun rises. As students, most of us are taught the Earth rotates on its own axis once per day, and all 360 degrees rise above the horizon in twenty-four hours. Therefore, in two hours, on average, thirty degrees (or one zodiacal sign) will rise up over the horizon.  In one hour, approximately, fifteen degrees of the ecliptic rises—this is equivalent to half a zodiacal sign. This is the source of the discrepancy between the ages as defined by Hipparchus and the ages based on the ancient visible heliacal method. The difference between the ancient techniques of the heliacal rising zodiacal constellation at the VE compared to the modern VP method is approximately fifteen degrees, half a sign/age or about 1,075 years.  In ancient times, the zodiacal constellations were meant to be read via their visible heliacal position when applied to the astrological ages. The error Hipparchus made in 127 BCE when he inadvertently used the VP in place of the visible heliacal method delayed his ages by approximately 1,075 years.

I am not the only researcher who acknowledges the heliacal rising of the zodiacal constellations at the spring equinox as the astronomical framework for the ages. The archeo-astronomer Sepp Rothwangl in Considerations About the Start of the Age of Aquarius[11] claims that, in ancient times, a new constellation rising on the eastern horizon before Sunrise on the morning of the Northern Hemisphere spring equinox was the main criterion for the start of a New Age. Rothwangl also states that such a change from Pisces to Aquarius has already occurred, thus indicating the arrival of the new Age of Aquarius.

Hipparchus suffered from a calibration error when he applied the VP method to precession and astronomers and astrologers have adhered to this erroneous VP calibration technique ever since.  If the ancient heliacal method is applied to the zodiacal signs, a very different time frame is provided compared to the Vernal Point method. For example, in 2016 at the vernal equinox, the Sun (VP) sits in the constellation of Pisces, though the constellation of Pisces cannot be seen. The Vernal Point will remain in the constellation of Pisces for many more centuries. However, if you are awake one hour before dawn, when the stars are still visible on the eastern horizon, the last stars seen rising up from the eastern horizon before the sky turns blue is the constellation of Aquarius.

One hour before sunrise 20 March 2016 in Baghdad, Iraq
One hour before sunrise 20 March 2016 in Baghdad, Iraq

The above illustration one hour before dawn on 20th March 2016 in Baghdad shows the constellation of Aquarius sitting just above the horizon with no stars visible in the constellation of Pisces.

Therefore, the constellation of Aquarius is currently the visible heliacal rising constellation. The constellation of Aquarius has been the visible heliacal rising constellation for centuries. The conundrum is that, based on the Vernal Point located in the constellation of Pisces, we are supposedly in the Age of Pisces and will remain so for many centuries while based on the visible heliacal rising of the constellation of Aquarius, we are in the Age of Aquarius and have been in the Age of Aquarius for centuries.  The latter assertion is substantiated by historians who claim the arrival of Modernity occurred about 500 years ago.[13]

It is one thing for an astrologer-astronomer from over 2,000 years ago to make a mistake, but to not correct this mistake at the first opportunity is another massive mistake by astrologers.

The Seven Most Popular Posts for Further Investigation

The Age of Aquarius for Dummies

The Aquarian age did not begin in the 1960’s or ’70s

SCORPIO – the Sign of the Times …. Revisited – Part 1

Females, Women and Feminists in the Age of Aquarius

Generational Astrology – Introduction (Part 1)

Gemini’s Role in our Modern World (or Battle of the Brains)

Trump is Representative of the Age of Aquarius


Star illustrations courtesy of Stellarium software –

A portrait of Hipparchus – Wikipedia,


[1] Rumen Kolev, “Some Reflections about Babylonian Astrology,”

[2] The Exact Sciences In Antiquity, p. 98

[3] “MUL.APIN.” Wikipedia. Retrieved 02:15, 16 June 2008,

[4] Ronald A Wells, “Astronomy in Egypt,” Astronomy Before the Telescope, p. 34

[5] Brady’s Book of Fixed Stars, p. 323

[6] Shining in the Ancient Sea, p. 41

[7] Rumen Kolev, “Some Reflections about Babylonian Astrology,”

[8] Babylonian Star-Lore, pp. 8–9

[9] Babylonian Star-Lore, p. 23

[10] The Dawn of Astrology, p. 81

[11] Sepp Rothwangl, “Considerations About the Start of the Age of Aquarius,” (Retrieved 3 April 2007)

[12] John H Rogers, “Origins of the ancient constellations: I. The Mesopotamian traditions,” Journal of the British Astronomical Association, 108, 1, 1998, p. 9

[13] Modernity. (2016, March 12), Wikipedia, Retrieved 08:27, March 14, 2016, from

The above is a modified extract from “The Dawning – Shedding New Light on the Astrological Ages

The Dawning by Terry MacKinnell

Join the Macro-Astrology group to keep on track with the evolving conversation on the astrological ages.  I post to many groups and sites but nearly all these posts are also published at the Macro-Astrology FaceBook group like a central depository:


7 thoughts on “An Age Old Mistake That Still Haunts Astrologers

    • The Babylonians created the zodiacal constellations, but that is not the same as the sidereal zodiac. My sources indicate that the Greeks took the zodiacal constellations and tidied them up by creating the sidereal zodiac of 12 signs of exactly 30 degrees each. What is your source for the Babylonian origin of the sidereal zodiac?

  1. Thank you both , it inspired me to look up Wikipedia Babylonians and other sites, learning they not only started documenting stars , were responsible for giving us 60 seconds to an hour as well as 360 degrees etc, we use today! Fascinating to read history , realizing life and others studies , research ,documented looking to the celestial for answers. Lots to absorb for sure, add to findings , the Greeks looking to the heavens to the ” gods ” for answers. Inventors of democracy I’ve been told, tho cant pretend I know it’s factual. I am grateful for this site and others input. Thousands of years various explorers interested in our existence, seeking answers gift of data gave us astrology today. Note I didn’t say horoscope! Lol I m no expert as there is so much to grasp, learn, digest , ( someday maybe maps will show the period discussed with today’s city, country underneath, complain I know I guess I’m spoiled with ability to get quick knowledge on being so expansive in giving appreciated info ) math was also born , along with history and need for schooling. The greatest gift is their limited knowledge and desire for answers, now born into amazing technology to research. It’s my good fortune to gain info; a universe of infinity answers, vast findings ,yet to find thru help of others whose dedication makes it possible . I am always amazed with incredible info availed at fingertips : knowledge online without having had to document findings or wait centuries for someone else interested to document the wisdom , their interests, many knowledgeable
    facts learned through time and help of others genius dedication to share. Thanks to many others passion while we have this life in the universe together , today.

  2. […] Terry MacKinnell responded to our above request, claiming that in ancient Babylon a new zodiacal constellation rising over the eastern horizon before sunrise on the morning of the Northern Hemisphere spring equinox indicated the arrival of a new age. Read more at An Age Old Mistake That Still Haunts Astrologers. […]

  3. Hello Terry. I have done a lot of work on Great Ages. They seem to have a powerful seed image. Jesus pinned to cross with Virgin Mary weeping at his feet; Virgo, the Virgin, Descendant to Pisces Ascending, takes the female role just as Whore of Babylon does for Taurus/Scorpio. The goddess Athena (with her sword) takes the role for Aries/Libra, democracy and armies to protect the democracy – and I suspect we have a ‘people’s princess’, Diana, for Aquarius /Leo. She had to be a ‘princess’ as she plays the Leo, ‘female role’. Studying Ages I have realised that they act like tree rings. Very slowly, over thousand of years, the qualities of the age develops. Pisces/Virgo is blossoming quite obviously now, think alternative health and Glastonbury and they way all nationalities are mixing their genes. Perhaps it helps that Neptune is in Pisces. The Bull in Wall street is a product of the Age of Taurus. Markets can be bullish can’t they? According to Herodotus Babylonians were more interested in making money than war. So Ages bring in new expressions of civilisation which stick around, they evolve civilisation. I suspect that The Cosmic Blueprint, a model that I discovered way back in 1984, a model that explains how ‘the brain’, ‘hardware’, also known of as ‘The Anima Mundi’, ‘Golden City’, or ‘new Jerusalem’, is run by ‘cosmic software’, our familiar Zodiac. This is a model which is so innovative that when first I came across it, it just disturbed everyone, scientist and astrologer (well not Charles Harvey, he was a friend and helping me). But now things are changing. The young people here in Bath (Herschel’s house, where he discovered Uranus, is just over the river from where I am writing this) – they understand. They have grown up using mobile phones and computer ‘software’ (Aquarius). Notice Aquarius’ wavy lines. I have made these young ones ‘Cosmic Blueprint’ T Shirts. Oh, and yes, of course, Uranus was discovered in New Kings Street, just across from where I am writing this. In the realms of cosmic software synchronicity rules. I came to Bath to do the MA with Nick before it moved to Lampeter. Patrick was my tutor. He says I am his tutor now! Anyway Terry, you can check out all this on Chrissy Philp. The presentations explain how I discovered these models. They are titled, One The Bride, Two, The Groom, and Three the Child. I also posted my latest presentation which I gave here last month. It is simply called The Cosmic Blueprint.

    • Hi Chrissy, thank you for your insights, I will check out your ASAP. There is no monopoly on how to view the ages, and your insights are interesting. I was mildly influenced by Charles Harvey in my initial research in the late 1980s as his researched confirmed to me that his rectification did not work, and the sub-periods (sub-ages) do not proceed from Aries to Pisces within each age, but are retrograde, like their parent ages, plus follow the dwadasamsa format for sub-periods of signs – the original method from over 2,000 years ago. I will be in England soon, and we intended to stay overnight in Bath, but we had to bypass Bath due to the excessive cost of the train from Edinburgh to Bath, compared with London.

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