Zohvia
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Methodology

What we calculate, and what it cannot prove.

Your chart depends on a birth instant, a place, and a chosen calculation system. Here is how those become the labels you see, what has been checked, and what a chart cannot establish.

Calculation layer

Astronomical inputs and implemented transformations.

Planet positions

The browser uses astronomy-engine to calculate tropical longitudes for the Sun, Moon, and supported planets at the entered date and exact time. A direct NASA/JPL corpus checks those astronomical positions within a declared tolerance; it does not validate astrological meaning.

Declared PAC fixed-initial-point sidereal model

Zohvia implements PAC's published fixed-initial-point description with astronomy-engine rotations and checks 13 printed 2026–27 Rashtriya Panchang values under a disclosed time interpretation. This is not PAC approval or universal Lahiri correctness and may differ from another implementation near boundaries.

Whole-sign houses and nakshatras

The entered place, coordinates, timezone, date, and exact time feed the ascendant calculation. Zohvia then uses whole-sign houses and divides the sidereal Moon longitude into 27 nakshatras and four padas.

What the calculators and reports include

The free Kundli calculator shows named chart placements. Paid report access adds saved reports, PDF downloads, revocable sharing, and corrections for the purchased report type. Reports do not include predictive readings, life-area scores, dasha timelines, remedies, Sade Sati, forecasts, or exact longitude values.

Evidence model

Different checks answer different questions.

Objective astronomy, government calendrical publications, named textual witnesses, pinned independent implementations, and boundary tests serve different roles. Forums, videos, blogs, and practitioner material may reveal variants or confusing edge cases, but popularity does not decide a calculation rule. Shipped rules name their conventions. Versioned claim records connect authorized explanatory copy to calculated-fact paths, source locators, risks, and required boundaries. That is software traceability, not source-owner, practitioner, or human-astrologer certification.

Matching disclosure

A modified framework, with the differences disclosed.

Match uses eight weighted rule categories with a maximum of 36 points. Varna can use an explicitly selected directional rule; its default symmetric rule, the simplified symmetric Vashya table, and symmetric Gana table are product modifications. Nadi and Bhakoot adjustments do not restore points. Manglik flags and their adjustment states are separate from the total. D9 ascendant signs are chart details, not a compatibility measure. None of these rules establishes relationship outcomes.

Match rule reference

The inputs, rule, and convention behind each row.

Varna has two selectable modes; only one contributes to the eight-row total. Historical references locate related rules. Where Zohvia uses a different table or score, the difference is stated beside it.

Varna (role-neutral modification) · up to 1 point

Inputs: Both sidereal Moon-sign elements

One point for the same element, Water with Earth, or Fire with Air; otherwise zero.

Selected convention: A symmetric Zohvia element rule, replacing the historical directional Varna point. Swapping profiles preserves this point.

Elements do not establish personality, social identity, or suitability for marriage.

Varna (selected directional rule) · up to 1 point

Inputs: Both sidereal Moon signs; Explicitly selected calculation roles

The selected groom-role chart receives one point when its Moon-sign group has equal or higher precedence in this historical table; otherwise zero. Both directional results are retained.

Selected convention: This choice changes only the Varna row. The other seven rows remain the declared Zohvia policies. Roles are selected, never inferred from a name or profile order.

Historical chart categories do not identify either person's caste, ancestry, gender, worth, or relationship role.

Muhurta Chintamani, Sanskrit edition (1919) · Vivaha-prakarana 6.22; scan 145, printed page 125

Vashya · up to 2 points

Inputs: Both sidereal Moon longitudes, including half-sign position

Two points for matching classes; zero for a human-class and forest-class pair; one for other pairs. Sagittarius and Capricorn change class at 15 degrees within the sign.

Selected convention: Zohvia uses a symmetric five-class simplification. The linked historical witness is directional and does not establish this simplified table.

These are table categories, not dominance, influence, or power within your relationship.

Muhurta Chintamani, Sanskrit edition (1919) · Vivaha-prakarana 6.23; scan 145, printed page 125

Tara · up to 3 points

Inputs: Both Moon nakshatras

Count inclusively from each nakshatra to the other. Reduce each count to 1–9, treating remainder zero as 9. Each direction earns 1.5 points unless its number is 3, 5, or 7.

Selected convention: The selected rule sums both directions and does not depend on calculation roles.

The count does not predict luck, wellbeing, or relationship events.

Muhurta Chintamani, Sanskrit edition (1919) · Vivaha-prakarana 6.24; scan 146, printed page 126

Yoni · up to 4 points

Inputs: Both Moon nakshatras mapped to the selected animal table

Look up the two animal categories in Zohvia's symmetric 14-by-14 matrix. Matching categories receive four points; other cells receive zero to three.

Selected convention: The source locates animal assignments and score categories; it does not independently establish every cell of Zohvia's selected matrix.

Animal categories do not measure sexuality, consent, attraction, or either person's character.

Muhurta Chintamani, Sanskrit edition (1919) · Vivaha-prakarana 6.25–26; scan 146, printed page 126

Graha Maitri · up to 5 points

Inputs: Both Moon-sign lords; Their two entries in the selected planetary relationship table

Same lord or mutual table friendship earns 5; friend/neutral earns 4; mutual neutral earns 3; enemy/friend earns 1; enemy/neutral earns 0.5; mutual enemy earns zero.

Selected convention: The linked commentary gives 2 and 1 for the two mixed-enemy categories; Zohvia's selected policy gives 1 and 0.5. These conventions are not interchangeable.

Planetary table relationships do not measure friendship, communication, or mental compatibility between people.

Muhurta Chintamani, Sanskrit edition (1919) · Vivaha-prakarana 6.27–28; scan 147, printed page 127

Gana · up to 6 points

Inputs: Both Moon nakshatras mapped to three Gana groups

Matching groups receive 6 points. A different-group pair involving the Rakshasa table category receives 3; the remaining different-group pair receives 5.

Selected convention: Zohvia's symmetric 6/5/3 policy differs from the linked commentary's 6/4/0 categories. Selecting directional Varna does not change Gana.

A Gana category does not establish temperament, kindness, behaviour, or safety.

Muhurta Chintamani, Sanskrit edition (1919) · Vivaha-prakarana 6.29–30 (begins on scan 147); scan 148, printed page 128

Bhakoot · up to 7 points

Inputs: Both sidereal Moon signs; Inclusive sign distances in both directions

Zero points when either distance is 2, 5, 6, 8, 9, or 12; seven otherwise. A separately displayed lord-relationship adjustment leaves these base points unchanged.

Selected convention: Zohvia's adjustment checks same lord or mutual table friendship. The historical discussion contains further conditions and different adjusted scoring; Zohvia does not claim to reproduce them.

This rule says nothing about finances, children, health, or whether a relationship will last.

Muhurta Chintamani, Sanskrit edition (1919) · Vivaha-prakarana 6.31–32; continuation 6.33 on scan 149; scan 148, printed page 128

Nadi · up to 8 points

Inputs: Both Moon nakshatras mapped to three Nadi groups; Moon signs and padas for the separate adjustment

Different groups receive 8 points; the same group receives zero. Zohvia notes an adjustment for the same Moon sign with different nakshatras, or the same nakshatra with different padas. The base points stay unchanged.

Selected convention: The linked source locates the three groups. Zohvia's combined sign-or-pada adjustment is a separately declared policy, not established by that group locator.

Nadi does not diagnose health, genetics, fertility, or family outcomes.

Muhurta Chintamani, Sanskrit edition (1919) · Vivaha-prakarana 6.34 commentary; verse on scan 149; scan 150, printed page 130

Interpretation boundary

Calculation does not make a meaning scientific.

Astrology is not scientifically validated as a reliable measure of personality, compatibility, health, or future events. Traditional language shown around a calculated position or period is symbolic interpretation. Do not use it to make or time medical, mental-health, fertility, mortality, safety, financial, legal, property, work, or relationship decisions. Use real-world evidence and qualified advice where relevant.

Good to know

Methodology questions

What astronomical library does Zohvia use?

Zohvia uses the astronomy-engine software library for tropical Sun, Moon, and planet positions and for the rotations in its continuous PAC fixed-initial-point sidereal model. This is Zohvia's implementation, not PAC certification or a licensed Swiss Ephemeris implementation.

Has the calculation been independently validated?

Zohvia runs automated reference, timezone, ascendant, node, Panchanga, rule-variant, numerical-boundary, and claim-safety checks. Those checks are software evidence, not independent certification. Zohvia does not claim practitioner certification or scientific validation of astrology.

Is Match the same as a classical Ashtakoota score?

No. Zohvia uses a named, modified 36-point framework. Vashya and Gana are symmetric product tables. Varna uses a disclosed symmetric rule unless you explicitly select a directional calculation role. Nadi and Bhakoot adjustments are separate flags and do not restore points. Results can differ from other implementations.

Why does the product require an exact birth time?

Birth time affects the ascendant, houses, divisional charts, and can affect Moon-based calculations near a boundary. Zohvia does not rectify, infer, or substitute a time, so personal results stay unavailable until an exact time is entered.

Does an astronomical calculation validate astrology?

No. Computing a celestial position does not scientifically validate a traditional meaning attached to that position. Zohvia labels astrological interpretation as symbolic reflection, not evidence, advice, or a reliable forecast.

Explore your chart with the method in view.

Start with a free calculation. You will need an exact recorded birth time.