Method
How AstroYoda calculates a kundli
AstroYoda uses a high-precision ephemeris, the sidereal zodiac, the Lahiri ayanamsa and whole-sign houses. It calculates planetary longitudes, the ascendant, nakshatras, Vimshottari dasha and the 36-point Ashtakoota matching from the birth details you enter.
What data goes into a kundli?
A kundli needs the birth date, birth time and birth place. The place supplies latitude, longitude and the time zone. AstroYoda converts the local birth time to UTC before calculating planetary positions, so daylight-saving rules and historical time-zone offsets are handled by the time-zone database.
Which zodiac and ayanamsa are used?
The chart uses the sidereal zodiac rather than the tropical zodiac. The difference between them is the ayanamsa, the slow precession of the equinoxes. AstroYoda uses the Lahiri ayanamsa, the standard used by most Indian Vedic astrology software and panchang publications.
The result is the sidereal longitude of each planet. The ascendant is the point of the zodiac rising on the eastern horizon at the birth time and place.
The ayanamsa uses a Lahiri (Chitrapaksha) reference table at yearly intervals from 1900 to 2050, interpolated by date; dates outside that range are extrapolated at the mean precession rate. Rahu and Ketu use the true lunar node, calculated from the Moon's instantaneous orbital plane, rather than the mean node.
How are houses assigned?
AstroYoda uses whole-sign houses. The rising sign is the first house, the next sign is the second house, and so on through the twelve signs. This is the traditional whole-sign method used in much of Jyotish.
Other house systems, such as equal houses or Placidus, place house cusps differently. Two charts calculated with different systems can describe the same planet in a different house, especially near a sign boundary.
What happens when the birth time is unknown?
An exact birth time is required for the ascendant, house positions and dasha timing. When the time is marked unknown, AstroYoda uses noon and labels the chart accordingly. The rising sign, house cusps and sometimes the Moon can be uncertain. The report does not pretend that a noon chart is exact.
How is Vimshottari dasha calculated?
Vimshottari dasha is based on the Moon's position at birth. The Moon's nakshatra determines the starting planetary period and the balance remaining at birth. The system then runs a 120-year cycle of mahadashas, with antardashas and shorter sub-periods inside each one.
AstroYoda shows the current chain and the upcoming mahadasha and antardasha dates. Dasha dates depend on the accuracy of the birth time, especially when the Moon is close to a nakshatra boundary.
How is kundli matching calculated?
Kundli matching uses the classical 36-point Ashtakoota method. It compares the Moon sign and birth nakshatra of two charts across eight kootas. The score is a traditional Moon-sign comparison, not a complete relationship reading.
| Koota | Points | What it compares |
|---|---|---|
| Varna | 1 | Spiritual outlook and temperament |
| Vashya | 2 | Influence, yielding and holding |
| Tara | 3 | Birth-star compatibility in both directions |
| Yoni | 4 | Instinctive and physical compatibility |
| Graha Maitri | 5 | Friendship between Moon-sign rulers |
| Gana | 6 | Temperament and emotional rhythm |
| Bhakoot | 7 | Moon-sign axis and material rhythm |
| Nadi | 8 | Constitutional and energetic balance |
A high total is not a guarantee and a low total is not a final decision. The individual charts, the dasha periods, family context and the couple's choices matter more than a single number.
What can change the result?
Small differences in birth time can move the ascendant, change a house placement or shift the Moon into another nakshatra. Different ayanamsas, house systems and interpretation traditions can also produce different readings. That is why the method is stated openly.
Who writes and maintains this?
The calculators and explainer content are maintained by the AstroYoda team using classical Jyotish references and a deterministic astronomical calculation. The site does not invent astrologer profiles, credentials or testimonials. The About page explains the editorial approach.
What about the love calculator?
The love calculator is a separate numerology tool. It uses Chaldean name numbers, life-path numbers and birthday numbers; it does not use the birth-chart engine and it is not a Vedic prediction. Use kundli matching for the 36-point Moon-sign comparison.
The life-phases and remedies sections are interpretive layers built from the calculated chart. They describe themes and traditional practices; they do not guarantee events or replace medical, legal or financial advice.
What are the limits?
AstroYoda is a reflective tool. It is not medical, legal, financial or predictive advice, and it is not a crisis service. Do not make a health, legal or financial decision from a chart. For anything urgent, contact a qualified professional or local emergency services.