Calculation and interpretation are separate stages. Astronomical positions and Vedic derived values are computed first from the supplied birth data and selected settings. AI is used afterward to explain available chart facts; it does not calculate planetary positions and cannot guarantee predictions or outcomes.
Planetary positions are computed through Swiss Ephemeris using the project's pinned Python integration. Birth date, local birth time, timezone offset, latitude, and longitude are converted to a UTC Julian day before planetary and chart calculations are requested.
Swiss Ephemeris provides astronomical positions. It does not provide the final Parashari interpretation. Results can change when the entered time, timezone, coordinates, or calculation settings change.
ParasharaHora uses a sidereal zodiac. Lahiri (Chitra Paksha) is the default Ayanamsha, and the selected mode is applied before sidereal planetary and house calculations.
Two calculators can disagree even when both use Swiss Ephemeris if they use different Ayanamshas, coordinates, time handling, or rounding.
The birth form supports True Node and Mean Node. True Node is the default. The chosen setting determines the longitude used for Rahu; Ketu is placed opposite Rahu. The selected node setting is stored with saved chart data so a restored chart can be calculated consistently.
True Node follows the oscillating lunar-node position. Mean Node uses an averaged path. Neither option should be mixed silently when comparing two charts.
The Vimshottari sequence is Ketu, Venus, Sun, Moon, Mars, Rahu, Jupiter, Saturn, and Mercury, totalling 120 years. The birth Mahadasha is selected from the Moon's Nakshatra.
The remaining balance at birth is calculated from the fraction of that Nakshatra still untravelled by the Moon. Period lengths use a sidereal year of 365.25636 days. The timeline can be expanded through Mahadasha, Antardasha, Pratyantardasha, Sookshma, and Prana levels.
Dasha dates are mathematical timing periods. Interpretation also considers house lordship, placement, dignity, aspects, relevant Vargas, and current transits.
Divisional charts assign each sidereal planetary longitude to a divisional sign using chart-specific Parashari rules. The principal Shodasavarga set currently exposed by the report engine is:
Higher divisions are especially sensitive to birth-time accuracy. A D9, D10, or D60 chart should not be treated as dependable when the recorded birth time is uncertain or near a divisional boundary.
Shadbala is calculated for the seven visible planets and aggregates six strength groups in Virupas. Rahu and Ketu are not assigned a standard six-fold total in this implementation.
Totals are compared with the implementation's planet-specific minimum requirements and displayed as relative strength percentages. A high percentage means comparatively strong calculated Bala; it does not by itself mean that every result of that planet will be favourable.
For a focused question or report, the interpretation layer is instructed to combine the relevant D1 house, occupants, received aspects, the house lord's sign, house and dignity, the lord's dispositor when available, relevant Yogas, active Dasha periods, matching Varga facts, and current transits. It should not make a conclusion from a single Karaka or one isolated placement.
Positions, houses, Vargas, Dashas, Bala values, Yogas, and transit data available for the selected chart.
Career emphasises the 10th house and D10; relationships emphasise the 7th house and D9; other topics select their corresponding houses and Vargas.
AI organises supplied facts into natural language. It may still omit context, overstate a conclusion, or produce an error, so important decisions require independent judgment.
A meaningful comparison must use the same date, exact local time, timezone and daylight-saving treatment, geographic coordinates, Ayanamsha, node type, zodiac mode, Varga convention, and rounding precision. Compare raw sidereal longitudes first, then signs and houses, and only then derived tables or interpretations.
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