Stone Age astronomy focused on celestial time cycles and natural units, allowing astronomers to develop intricate cosmic meanings. As civilizations advanced, attention shifted to space and scientific models, diminishing the intimate connection to time. Notably, the development of megalithic measurements reflected their unique perception of time, emphasizing a geometric understanding of their environment.
figure 1: The north-east quadrant of the horizon from the megalithic sites of Carnac. At that latitude, alignments to the solar and lunar extremes followed a simple geometry of multiple squares, repeated in all four quadrants, the observer in this quadrant being placed bottom left.
It was most fortunate for the stone age astronomer that the time periods surrounding the earth could be counted in whole numbers of natural units such as the solar day, the lunar month, and the lunar orbit. Over longer periods, whole number fractions would become whole, revealing special cosmic numbers, then symbolic of the cosmic time periods associated with planets, eclipses and other coincidences, so that a large matrix of relationships gave the Stone Age a world of meanings in the sky based upon time and number.
Explores the relationship between ancient astronomical practices and megalithic cultures, highlighting how early societies understood time through celestial cycles. It contrasts matrilineal hunter-gatherer societies with later patriarchal agricultural ones, suggesting that megalithic structures reflect deep, sacred knowledge of the cosmos and have influenced subsequent architectural designs across civilizations.
Above: (center) The form of the Minoan “horns of consecration”, on the island of Crete, followed (outside) the form of the manifestations of Venus in her synodic period.
Time appears to march on at what seems a constant rate. In this way time has two opposite directions, the somewhat known past and the largely unknown future. However, events in the sky repeat and so they can be predicted as seasons within a year or lunar phases within a month. Even before modern calendars, stone age humans counted the days in a month to understand recurrence of the menstrual period and know when moonlight would be strong again at night.
Figure 1 (above) L’Abri Blanchard Tally Bone 30,000 BP with (below) Alexander Marshack’s interpretation, showing marks as days shaped to express the moon’s phase, over 59 whole days or two lunar months.
Two months happen to equal 59 whole days: a lunar month is 29.53 days long, just over twenty-nine and a half, which is half of 59. In the artifact shown on the top of figure 1, each day was carved upon a flat bone, each mark appearing varied in shape and depth to show the moon’s changed phase on a given day. The flat bone enabled a cyclic shape to be used, of 59 marks, which “ate its own tail”: showing there were always the same number of days in two “moons”. This sameness emerges from dividing the recurring time of the solar day into the time of the month’s phases over two months, to give the recurring whole number of 59, then forever useful as a knowledge object.
Just after Summer Solstice, Michael Quu and I recorded a conversation for his “Learn Something New” podcast and this is available, as below.
The conversation was balanced between ancient and modern, numbers and metaphysics in a way that seems necessary to make sacred geometry more relevant to the modern situation while revealing what the ancients discovered in the world of astronomical time.
This is one hour interview around my new book on Ancient Goddess Cultures use of sacred geometry and other skills the ancients had, which our present culture dutifully ignore. below: Interviewer Jim Harold at Stonehenge vis Facebook.
One could ask “if I make a times table of 29.53059 days, what numbers of lunar months give a nearly whole number of days?”. In practice, the near anniversary of 37 lunar months and three solar years contains the number 32 which gives 945 days on a metrological photo study I made of Le Manio’s southern curb (kerb in UK) stones, where 32 lunar months in day-inches could be seen to be 944.97888 inches from the center of the sun gate. This finding would have allowed the lunar month to be approximated to high accuracy in the megalithic of 4000 BC as being 945/32 = 29.53125 days.
Silhouette of day-inch photo survey after 2010 Spring Equinox Quantification of the Quadrilateral.
One can see above that the stone numbered 32 from the Sun Gate is exactly 32/36 of the three lunar years of day-inch counting found indexed in the southern curb to the east (point X). The flat top of stone 36 hosts the end of 36 lunar months (point Q) while the end of stone 37 locates the end of three solar years (point Q’). If that point is the end of a rope fixed at point P, then arcing that point Q’ to the north will strike the dressed edge of point R, thus forming Robin Heath’s proposed Lunation Triangle within the quadrilateral as,
points P – Q – R !
In this way, the numerical signage of the Southern Curb matches the use of day-inch counting over three years while providing the geometrical form of the lunation triangle which is itself half of the simpler geometry of a 4 by 1 rectangle.
The key additional result shows that 32 lunar months were found to be, by the builders (and then myself), equal to 945 days (try searching this site for 945 and 32 to find more about this key discovery). Many important numerical results flow from this.
Counting the lunar month has a deep history, reaching right into prehistory. Firstly, how does one find a phenomenon that gives a whole number of days. Its actual length is now known to be 29.53059 days, and to give a whole number just two lunar months gives 59 days, leaving just 1.8 days too little. But never mind, for the stone age this looks promising but how can one observe the moon at a fixed point and which phase is best to count.
Within a day, before or after the full moon, the Moon looks pretty full, changing little and offering no decisive moment between to count between two full moons. For this reason, a few prehistoric bones give clues to their method which involved counting days with some mark representing the Moon’s phase. This led to the sickle/cresent marks to left “(” or right “)” and between these a round mark “O” and dashes of dark or invisible moon “-“. These are what Alexander Marshack saw in the Albard Plaque, carved on a flat bone from a midden:
Figure 1 (left) Alexander Marshack investigating marked bones in Europe and a crucial interpretation of a 30,000 year old bone as a double lunar month of counting. From my 2015 lecture in Glastonbury about my work prior to Sacred Number and the Lords of Time in 2014.
Marshack demonstrated plausible evidence that consecutive day marks were used in the stone age, stylised to indicate lunar phase within a pattern recognizing that two lunar months formed a recurrent structure in time in a whole number of days, namely 58 days. The utility of the calendric device was that the cycle could be visualized as a whole, making the plaque an icon of both knowledge and meaning. This could be shared but also gave the possessor of this small bone, a power to predict when hunting is possible in lighter nights the light cycle of the moon. In addition, the moon’s phase locates the location of the sun and how many hours were left before the dawn. The bone was an overview of a daily process during most of which the moon is visible by night and day.
In following posts I look at many other ways to count the month, based on longer counts and also look at where in the lunar phases one can best start and stop counting.
You may like to watch my lecture at Megalithomania (which starts with an ad you may skip).
