Why Birth Time Matters in Astrology:

  1. Ascendant (Rising Sign):
    • Changes approximately every 4 minutes.
    • Defines the 1st house and determines the entire house system layout.
    • Alters how planets express and what life areas they affect.
  2. House Cusps:
    • Every house changes with time—an incorrect time skews life themes entirely.
    • A chart cast even 10–15 minutes off may place planets in different houses.
  3. Moon Position:
    • The Moon moves ~12° a day, changing sign every 2.5 days.
    • An inaccurate time can alter its sign or house placement, especially near sign boundaries.

The Trutina Hermetis rectification method exists precisely because ancient astrologers recognized how critical birth time accuracy was to aligning conception karma and soul purpose.

The Trutina Hermetis method of rectification is based on the assumption that the positions of the Ascendant and the Moon in the conception chart and the birth chart are interconnected by a rule: the Moon at birth is on the horizon axis of the conception horoscope, and the Moon at conception is located on the horizontal axis of the radix. In classical form the Trutina Hermetis says:
• When the radix Moon is waxing Moon and above the horizon, the period of pregnancy was less than 273 days, and the Moon in the prenatal epoch chart is conjunct the Ascendant of the radix.
• When the radix Moon is waning Moon and above horizon, the pregnancy was more than 273 days, and the prenatal Moon has the same coordinate as the Descendant of the radix.
• When the radix Moon is under the horizon and waxing, pregnancy was more than 273 days, and prenatal Moon incorporates the radix Ascendant.
• When the radix Moon is under the horizon and waning, pregnancy last less than 273 days, and the prenatal Moon conjoins the Descendant of the radix.

We are in an advanced stage of producing an on-line function that uses the above criteria to calculate a previously unknown birthtime.

This will be a particularly useful tool for anyone seeking to create a birth chart of an ancestor or for a person who simply does not know what time of day they were born.

This function will be available to subscribers!