Personal Lagna position and class

personal.lagna-strength

Candidate Lagna is measured from Janma Rashi and classified by mobility and favourable houses.

Assurance

Level	Current statement
Documented and traceable	Yes — the canonical record includes the process and a worked example.
Regression or reproduction checked	Linked to 2 repository test file(s).
Independently source-supported	Not recorded as independently verified. The disclosed provenance state remains authoritative.

Computation method

Method type: formula

Count candidate Lagna inclusively from Janma Rashi, classify its relative house, and independently classify the rising Rashi as movable, fixed, or dual.

Process

1. Compute the wrapped one-based house from Janma Rashi to Lagna Rashi.
2. Return own for house 1, ashtama for 8, trikona for 5 or 9, kendra for 4, 7, or 10, and neutral otherwise.
3. Classify Mesha/Karka/Tula/Makara as Chara, Vrishabha/Simha/Vrischika/Kumbha as Sthira, and Mithuna/Kanya/Dhanu/Meena as Dvisvabhava.
4. Treat the union of Kendra and Trikona houses as favourable.

Formulae

Relative Lagna house

h = ((index(lagna)-index(janma)) mod 12)+1

• h: candidate Lagna house from Janma Rashi

Worked example

Mesha Janma Rashi, Vrischika Lagna

Inputs

• Janma index: 0
• Lagna index: 7

Calculation

1. ((7 - 0) mod 12) + 1 = 8.
2. House 8 maps to ashtama.
3. Vrischika belongs to the Sthira class.

Result

• Position: 8
• Verdict: ashtama
• Class: Sthira
• Favourable: false

Method notes

• No planetary occupancy, aspects, dignity, Vargas, or house-lord strength are inferred by this helper.

Contract

Owning layer: personal
Claim kind: textual-rule
Time basis: Candidate slot Lagna relative to natal Rashi.

Inputs

• Janma Rashi
• candidate Lagna Rashi

Outputs

• relative house
• Lagna class
• verdict
• Ashtama flag

References and evidence

Evidence classes: textual
Verification states: needs_locator

Parity and unit behavior are tested; broad Lagna verdict semantics need claim-level locators.

panchangam.derived_classifications

Evidence class: textual
Verification state: needs_locator
Locator: No precise locator is registered.

Scope: Special Yogas, Panchaka labels, Khara month, Pitru Paksha, Simha-Stha, Maudhya, Anandadi Yoga, Disha Shoola, Nakshatra Mukha and Panchaka Rahita are separate traditional classifications. The group exists to expose evidence debt and grants no umbrella textual authority; each component needs its own inspected rule table and regional boundary.

Sources

• Muhurtha (Electional Astrology) — B. V. Raman; UBS Publishers' Distributors, 1993, ISBN 9788185674681, 181 catalogued pages; authority type: modern_synthesis
• Muhurta Chintamani — Rama Daivajna; Undated Sanskrit text with Hindi commentary, Internet Archive identifier muhurta-chintamani-hindi; authority type: primary_text_hindi_commentary

The complete machine-readable source registry is available in provenance.json. A regression fixture or same-code reproduction is not independent verification.

Reproduce and review

• tests/test_lagna_position.py
• src/scorer/__tests__/muhurta-scorer.test.ts

Run the linked tests, then the complete offline contract:

python tools/verify_project.py

Public surfaces

• python-library
• mcp
• website

Limitations

• This house-only strength is not a complete election-chart Lagna assessment.

Implementation

• owner: telugu_panchangam/personal/lagna_position.py — lagna_class_of
• owner: telugu_panchangam/personal/lagna_position.py — lagna_position
• owner: telugu_panchangam/personal/lagna_position.py — lagna_verdict
• mirror: src/muhurta-scorer.ts — muLagnaClassOf
• mirror: src/muhurta-scorer.ts — muLagnaPosition

This route is generated from computations.json. Edit the registry and canonical reference prose in the same pull request as a behavior change.