Chandrabalam

personal.chandrabalam

The Moon's house from Janma Rashi is classified for favourability and Puja exceptions.

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 the current Moon sign inclusively from Janma Rashi and classify houses into good, remedial-Puja, or avoid sets; optionally derive Janma Rashi from Nakshatra Pada.

Process

1. Resolve Janma Rashi directly or map the birth Nakshatra/Pada over 108 Padas and twelve Rashis.
2. Return unknown when a Nakshatra straddles two Rashis and Pada is absent.
3. Compute the wrapped inclusive Moon house from 1 through 12.
4. Classify 1/3/6/7/10/11 as good, 2/5/9 as puja, and 4/8/12 as bad.

Formulae

Moon house

h = ((index(day_rasi)-index(janma_rasi)) mod 12)+1

• h: Moon house from natal Moon sign

Worked example

Mesha Janma Rashi, Moon in Mithuna

Inputs

• Janma index: 0
• Day Moon index: 2

Calculation

1. ((2 - 0) mod 12) + 1 = 3.
2. House 3 is in CHANDRA_GOOD.

Result

• Position: 3
• Verdict: good
• Favourable: true

Method notes

• The verdict table is parity-tested but its exact claim-level textual locator remains open.

Contract

Owning layer: personal
Claim kind: textual-rule
Time basis: Day or slot lunar Rashi relative to natal Moon sign.

Inputs

• Janma Rashi or birth Nakshatra/Pada
• day lunar Rashi

Outputs

• house number
• verdict
• favourability

References and evidence

Evidence classes: textual
Verification states: needs_locator

Python/browser behavior is tested; exact source locators for the full verdict vocabulary remain open.

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_chandrabalam.py
• tests/test_activity_surface_parity.py

Run the linked tests, then the complete offline contract:

python tools/verify_project.py

Public surfaces

• python-library
• mcp
• website

Limitations

• Nakshatra-to-Rashi without Pada can be ambiguous at sign boundaries.

Implementation

• owner: telugu_panchangam/personal/chandrabalam.py — chandra_position
• owner: telugu_panchangam/personal/chandrabalam.py — chandra_verdict
• owner: telugu_panchangam/personal/chandrabalam.py — rasi_from_nakshatra
• mirror: src/panels/tarabalam.ts — chandraOf
• mirror: src/data/rasis.ts — rasiFromStar

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