Hindu Predictive Astrology Part 26: Unknown Birth Times
Many people do not have their birth time or even birth date recorded. Ancient Hindu astrologers developed methods to reconstruct a horoscope from the moment of consultation — based on the principle that "birth means the birth of the mind and not merely the body."
Part 26 of 31 • Specialised Branches • Covers: Book Chapter XXVIII — Unknown Birth Times
The very inclination to know one's future, raised in the mind, is given expression to not at any chosen moment but at random — rather in a sudden manner. This moment of query is itself a birth.
The Foundational Concept
When someone whose birth data is unknown approaches an astrologer, record the exact time of their arrival, the direction they came from, and other details. Cast a full chart for this query time. If the consultation is by letter, use the time the letter was written. This Prasna Lagna becomes the foundation for reconstructing the entire birth chart.
The 9 Rules for Reconstructing Birth Data
If the Prasna Lagna falls in the first half of the Ascendant sign → birth occurred in Uttarayana (Sun's northerly course, roughly Jan–Jun). If in the second half → birth in Dakshinayana (Sun's southerly course, roughly Jul–Dec).
The rising Dwadasamsa (1/12th division) at query time determines Jupiter's sign at birth. If the 4th Dwadasamsa rises, Jupiter at birth was in the 4th sign from Prasna Lagna. Since Jupiter takes ~12 years per cycle, the number of completed cycles determines the age.
Ask the querist to touch a part of their body spontaneously. The body part indicates which 12-year cycle (out of a maximum 120-year life) Jupiter is currently in:
| Cycle | Body Part Touched | Age Range |
|---|---|---|
| 1st | Feet and ankles | 0–12 years |
| 2nd | Knees, buttocks, shanks | 12–24 years |
| 3rd | Thighs and sexual organ | 24–36 years |
| 4th | Loins and navel | 36–48 years |
| 5th | Belly | 48–60 years |
| 6th | Chest and breast | 60–72 years |
| 7th | Shoulders | 72–84 years |
| 8th | Neck and lips | 84–96 years |
| 9th | Eyes and brows | 96–108 years |
| 10th | Forehead and head | 108–120 years |
Determined by the ruler of the rising drekkana or the planet in the 1st house (whichever is stronger). Sun/Mars → Greeshma; Venus → Vasantha; Moon → Varsha; Mercury → Sarat; Jupiter → Hemantha; Saturn → Sisira. If the season doesn't match the Ayana, substitute Moon↔Venus, Mercury↔Mars, Jupiter↔Saturn.
Divide the rising drekkana into two halves: first half → first month of the season; second half → second month. Each day = 10 minutes of arc. The number of minutes passed in the relevant half ÷ 10 = the day of birth in that month.
The lunar day of birth = the number of degrees passed by the Sun in its current sign at question time.
Nocturnal Prasna Lagna → birth during the day. Diurnal Prasna Lagna → birth during the night (reversed logic).
The degrees rising on the Prasna Ascendant indicate the ghatikas of birth after sunrise (or sunset). Formula: (degrees risen ÷ 30) × day/night duration = ghatis after sunrise/sunset.
The Moon's birth sign can be determined from: the navamsa she occupies at query time, OR the body part touched by the querist (head = Aries through feet = Pisces). The birth Lagna is the Prasna Lagna itself, or the 5th or 9th from it — whichever is most powerful.
Worked Example: Query on 12 April 1937
Query time: 16 ghatis 44 vighatis after sunrise at Bangalore. Prasna Lagna: 9°54′ Cancer. Sun at 29°50′ Pisces. Jupiter in Capricorn.
Prasna Lagna is in the first half of Cancer (9°54′ < 15°) → birth in Uttarayana.
4th Dwadasamsa rises → Jupiter at birth was in 4th sign from Cancer = Libra. Querist touched thighs → 3rd Jupiter cycle. Age = (2 × 12) + 3 signs from Libra to Capricorn = 24 + 3 = 27 years.
Moon rules 1st drekkana of Cancer → Varsha season. Doesn't match Uttarayana → substitute Venus → Vasantha. Rising drekkana 2nd half (9°54′ > 5°) → 2nd month of Vasantha = Vaisakha (April–May). Minutes in 2nd half: 4°54′ = 294′ → 294 ÷ 10 = Day 30 of Vaisakha.
Sun at 29°50′ Pisces → lunar day = 30th (New Moon). Cancer is nocturnal → birth during day. Day duration = 30 gh 40 vi = 1840 vighatis. Birth time = (9.9/30) × 1840 = 607.2 vighatis = 10 ghatis 12 vighatis after sunrise.
Birth occurred on the 30th day of lunar month Vaisakha, approximately 27 years before April 1937 (i.e., ~1910), at 10 ghatis 12 vighatis after sunrise, during Uttarayana.
Key Takeaways
- "Birth means the birth of the mind, not merely the body" — the query moment IS a valid birth chart
The spontaneous impulse to consult an astrologer is not random but cosmically timed. This is the philosophical foundation of all Prasna-based rectification. - Jupiter's 12-year cycle is the key to determining the querist's age
The Dwadasamsa rising at query time → Jupiter's birth sign. The body part touched → which cycle. Age = (completed cycles × 12) + signs from birth-Jupiter to query-Jupiter. - The body-part table maps feet→head to cycles 1–10 (0–120 years)
An elegant system: the querist unconsciously reveals their age through a spontaneous physical gesture. - Season, month, day, and exact time are all extracted from the Prasna Lagna degrees
Drekkana ruler → season. Drekkana half → month. Arc minutes ÷ 10 → day. Degrees risen proportional to day length → ghatis after sunrise. - These methods require further research — Raman acknowledges they are not conclusive
A rare and honest admission. The principles are ancient and merit investigation, but should be applied with appropriate caution.
In Part 27, we study Medical Astrology — mapping zodiacal signs and planets to body parts, diseases, and constitutional types, with specific rules for diagnosing the source of illness from a horoscope.
Based on
Hindu Predictive Astrology
by B.V. Raman | First published 1938 | UBS Publishers' Distributors Ltd.