prenatal syzygy

Prenatal Syzygy in Astrology

Prenatal syzygy, a key concept in astrology, offers profound insights into the foundational energies influencing an individual’s birth chart.


Prenatal syzygy refers to the conjunction (New Moon) or opposition (Full Moon) of the Sun and Moon that occurs immediately before a person’s birth. This specific lunar phase is considered significant in traditional astrology for its potential influence on the individual’s life and destiny.

Importance in Astrology

1. Astrological Significance: The prenatal syzygy is believed to mark a critical point of celestial alignment that sets the stage for the cosmic conditions present at the time of birth. Astrologers look at this point to understand the foundational energies at play in the natal chart.

2. Connection to the Hyleg: In the context of identifying the Hyleg (the life-giving point or planet in a chart), the prenatal syzygy is one of the key considerations. If the New Moon or Full Moon preceding the birth falls in a favorable position, it might be used as the Hyleg, especially if other traditional criteria (like the Sun or Moon) are not strongly placed. However, the Hyleg is typically determined based on other factors, such as the Sun, Moon, or Ascendant, depending on the time of birth and other factors in the chart.

3. Symbolic Meaning: The phase of the Moon (New or Full) carries symbolic meanings—new beginnings or peak illumination—that can be interpreted as foundational influences on a person’s life journey. The prenatal syzygy represents the final major lunar event before birth, symbolizing the last significant infusion of lunar energy into the natal chart.

How to Identify the Prenatal Syzygy

1. Determine the Birth Date: Start with the exact date and time of the person’s birth.

2. Calculate the Lunar Phases: Look back from the birth date to find the last New Moon (conjunction of the Sun and Moon) or Full Moon (opposition of the Sun and Moon) that occurred before the birth.

3. Chart the Syzygy: Note the position of the prenatal syzygy in the natal chart, considering its placement in signs, houses, and its aspects to other planets.

Examples of Use

Natal Chart Interpretation: The position and aspects of the prenatal syzygy can provide additional layers of meaning in the natal chart. For instance, if the prenatal Full Moon is conjunct Jupiter, it might suggest expansive or fortunate influences related to the areas governed by the house where this conjunction occurs.

Lifespan Calculation: When determining the Hyleg, if the prenatal syzygy holds the most dignified position, it can be used to calculate the Alcochoden and, subsequently, the person’s potential lifespan. However, this is a complex and nuanced process that involves a detailed assessment of the chart as a whole, considering the Hyleg’s strength, the Alcochoden’s position and aspects, and other factors.


Prenatal syzygy is a unique and meaningful concept in traditional astrology, providing insight into the foundational lunar energies that influence an individual’s birth chart. By understanding and identifying the prenatal syzygy, astrologers can gain deeper insights into the life force and destiny patterns present from the moment of birth.

Veronica in the Witch Out of Time series uses astrology to determine which time line she’s trapped in–and hopefully how to get back to the correct one. Read more…


Leave a Reply

Your email address will not be published. Required fields are marked *