Stated, not hidden.
Jyotish has real schools with real differences, and a chart is only trustworthy if you know which school computed it. Here is every decision we've made — pinned, documented, and consistent across every chart and report. Grounded in real astronomy.
- Ayanamsa: Lahiri (True Chitra Paksha)Sidereal positions use the Lahiri ayanamsa in its True Chitra Paksha form — defined by the actual observed position of the star Spica (Chitra), computed for your exact birth moment from NASA JPL ephemeris data. This differs from table-interpolated mean Lahiri by at most an arcminute or two; we state the exact value used on every chart.
- System: ParashariChart logic follows Brihat Parashara Hora Shastra: Parashari graha aspects, classical dignities, named yogas by their BPHS definitions, and Vimshottari dasha. The one labeled exception: the Atmakaraka/chara-karaka layer, which is Jaimini and presented as such. We do not mix in KP or Nadi methods.
- Houses: whole-sign (rasi = bhava)The sign your ascendant occupies is the whole first house; each following sign is the next house. This is the classical Parashari default — no Placidus or other Western quadrant systems. Where a planet sits near a sign boundary we also show the cusp-based Bhava Chalit placement alongside, and say so.
- Nodes: true (osculating) Rahu & KetuRahu and Ketu use the true (osculating) lunar node — the Moon's actual instantaneous orbital plane — rather than the smoothed long-term mean. The two can differ by up to ~1.7°; our true-node positions are verified against an independent reference to within an arcminute. Chosen on practitioner review, 2026.
- Dasha: Vimshottari, day precisionThe 120-year Vimshottari cycle from the Moon's nakshatra balance at birth, nested through mahadasha, antardasha, and pratyantardasha, with dates computed to the day — deterministically. The same birth details always produce the same dates.
- Strength: full Shadbala + AshtakavargaPlanet strength uses the complete six-fold Shadbala (positional, directional, temporal, motional, natural, and aspectual) with the classical required minimums, and houses are scored by Sarvashtakavarga bindus. Numbers, not adjectives — the same figures you could verify against any classical calculator.
- Unknown birth time: the honest fallbackWithout a birth time we compute a Moon chart (Chandra lagna): your rasi, janma nakshatra, and dasha timeline — a classical, legitimate reading. We omit the ascendant, houses, and strength scores rather than invent them. We never guess a lagna.
- Doshas: stated with their cancellationsManglik, Kaal Sarp, and Sade Sati are computed from published classical rules — and every cancellation (cancellation rules are where most sites go quiet) is applied and shown. A dosha is a pattern to understand, not a curse to fear, and never a reason to upsell you with alarm.
Planetary positions are computed from NASA JPL ephemeris data (DE421) — the same data source used for spacecraft navigation — and our results are continuously cross-checked against independent classical calculators: planet longitudes agree within one arcminute, and nakshatra, pada, and rasi assignments match exactly across a validation set spanning births from 1955 to 2023. The language model that writes our reports never calculates anything: every number, date, and placement is computed first, deterministically, and the model only phrases it.
Source: Jet Propulsion Laboratory Development Ephemeris DE421, produced by NASA/JPL–Caltech and released into the public domain. We use this data under those open terms; NASA does not endorse, sponsor, or review this service.
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